基于Inspire的前端框架拓扑优化
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><span style="color: black;">本文为<strong style="color: blue;">Altair solidThinking™优化设计大赛</strong>投稿作品，作者为技术邻用户：孙正峰</span><span style="color: black;">，<span style="color: black;">倘若</span><span style="color: black;">爱好</span>务必点击文末<strong style="color: blue;"> 阅读原文</strong> 投上宝贵的一票哦！</span></p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">0、引言</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"> 随着汽车节能减排<span style="color: black;">需求</span>的<span style="color: black;">加强</span>，汽车轻量化势在必行。</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">前端框架<span style="color: black;">做为</span>汽车功能部件之一，集成多种环境件（散热器、锁扣、大灯、防撞梁等），性能<span style="color: black;">需求</span>非常高，从以往的金属前端到<span style="color: black;">此刻</span>的塑性前端，发展趋势越来越<span style="color: black;">显著</span>。<span style="color: black;">因此呢</span>，前端框架的轻量化迫在眉睫，在满足功能指标的前提下，重量最轻<span style="color: black;">作为</span>关键。</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">1、拓扑优化技术</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><span style="color: black;">日前</span>仿真优化的软件<span style="color: black;">非常多</span>，优化<span style="color: black;">办法</span><span style="color: black;">亦</span><span style="color: black;">非常多</span>，本文就不一一列举了。本文<span style="color: black;">重点</span>介绍无网格划分优化软件Inspire，<span style="color: black;">能够</span>进行拓扑优化、形貌优化、厚度优化等，前处理免除了网格划分繁琐的时间，后处理<span style="color: black;">办法</span><span style="color: black;">亦</span>非常灵活方便，同OptiSturct优化<span style="color: black;">办法</span>一致。</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"> 本文借助某项<span style="color: black;">日前</span>端框架，前期设计提前采取拓扑优化，以符合满足性能指标，<span style="color: black;">同期</span>满足轻量化<span style="color: black;">需求</span>。</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><span style="color: black;">首要</span>采用Inspire进行无网格拓扑优化，接着运用<span style="color: black;">一样</span>的拓扑优化<span style="color: black;">办法</span>（<span style="color: black;">包含</span>边界<span style="color: black;">要求</span>、<span style="color: black;">目的</span>指标等），在OptiStruct中进行有网格的拓扑优化分析，最后进行二者对比，得出结论。</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">2、Inspire无网格拓扑优化</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"> 某款前端框架几何模型如图1所示：</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><img src="https://mmbiz.qpic.cn/mmbiz_png/lR4GOtoy9vKNG9qzptYUkSf4iaPR2g7oQpb4xb2WEPbZhm9JZTbZTu738szIYhauLQKP9zUksGcUicDAkMttjE2Q/640?wx_fmt=png&tp=webp&wxfrom=5&wx_lazy=1&wx_co=1" style="width: 50%; margin-bottom: 20px;"></p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><img src="https://mmbiz.qpic.cn/mmbiz_png/lR4GOtoy9vKNG9qzptYUkSf4iaPR2g7oQUDNc1mzYg3kT7YmLic2NNobJduvt7LXmH76QBOrO5qMxBLlmdlzAmdw/640?wx_fmt=gif&tp=webp&wxfrom=5&wx_lazy=1&wx_co=1" style="width: 50%; margin-bottom: 20px;"></p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">图1 前端框架几何模型</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"> 该前端框架<span style="color: black;">处在</span><span style="color: black;">制品</span>设计<span style="color: black;">开发</span><span style="color: black;">周期</span>，<span style="color: black;">按照</span>拓扑优化结果可<span style="color: black;">指点</span><span style="color: black;">制品</span>结构设计，以满足功能指标及<span style="color: black;">减肥</span><span style="color: black;">需求</span>。</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><span style="color: black;">按照</span>环境件确定前端框架基本造型，此次拓扑优化<span style="color: black;">处在</span><span style="color: black;">制品</span>前期设计<span style="color: black;">周期</span>，<span style="color: black;">因此呢</span>，可优化的空间很大。</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"> 将前端框架几何模型导入Inspire软件中，在几何界面下对其进行分区（设计区和非设计区），<span style="color: black;">这次</span>分析<span style="color: black;">因为</span>是<span style="color: black;">处在</span>前期设计<span style="color: black;">周期</span>，<span style="color: black;">因此呢</span>，<span style="color: black;">无</span>进行<span style="color: black;">仔细</span>的分区，仅将吸能盒连接的螺栓孔进行分割为非设计区，其余部位均为设计区，而环境件（防撞梁等金属部件）均<span style="color: black;">做为</span>非设计区。</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">其次，设置材料，<span style="color: black;">因为</span>材料库中<span style="color: black;">无</span>PP+30GF，<span style="color: black;">因此呢</span>需要添加，<span style="color: black;">详细</span>材料属性如表1所示：</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><span style="color: black;"> 表1 前端框架及其环境件材料属性</span></p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><img src="https://mmbiz.qpic.cn/mmbiz_png/lR4GOtoy9vKNG9qzptYUkSf4iaPR2g7oQFJg0BicIhDFXib6Pzfde4d3QcRJePTkU3YHWsib1qibpPytzQNSByvmiabA/640?wx_fmt=png&tp=webp&wxfrom=5&wx_lazy=1&wx_co=1" style="width: 50%; margin-bottom: 20px;"></p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><img src="https://mmbiz.qpic.cn/mmbiz_png/lR4GOtoy9vKNG9qzptYUkSf4iaPR2g7oQUDNc1mzYg3kT7YmLic2NNobJduvt7LXmH76QBOrO5qMxBLlmdlzAmdw/640?wx_fmt=gif&tp=webp&wxfrom=5&wx_lazy=1&wx_co=1" style="width: 50%; margin-bottom: 20px;"></p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"> 载荷工况及边界<span style="color: black;">要求</span>如下：</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"> Case1：常温23℃，前锁罩刚度，+X向，锁扣受力，1000N；</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"> Case2：常温23℃，前锁罩刚度，+Z向，锁扣受力，1000N；</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">Case3：常温23℃，前锁罩强度，-Z向，锁扣受力，2500N，最大应力<span style="color: black;">少于</span>其拉伸强度的0.8倍；</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"> Case4：常温23℃，一阶固有频率，约束模态（带散热器总成质量）；</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"> Case5：高温80℃，散热器安装点刚度，+X向，600N（150N×4）；-Z向，600N（300N×2）。</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"> 约束：与车身连接处固定约束；</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">连接：金属部件之间及与前防撞横梁的连接采用刚性连接及焊接处理。</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"> 优化设置如下所示：</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"> <span style="color: black;">掌控</span><span style="color: black;">要求</span>：各个工况下的位移变形，一阶固有频率，前锁罩强度。</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"> 约束<span style="color: black;">要求</span>：F+X=1000N，X向：锁扣最大变形量≤7mm；</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"> F+Z=1000N，Z向：锁扣最大变形量≤2mm；</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"> F-Z=2500N，塑料支架最大应力≤62×0.8≈50MPa；</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">一阶固有频率（带散热器总成质量）≥35Hz。</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"> X向：散热器安装点最大变形量≤1mm；</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"> Z向：散热器安装点最大变形量≤1mm。</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"> <span style="color: black;">目的</span>：设计区域质量最小。</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"> 说明：<span style="color: black;">因为</span>散热器安装点刚度是在高温80℃<span style="color: black;">要求</span>下进行的，其材料物性<span style="color: black;">区别</span>于其他常温工况23℃，<span style="color: black;">因此呢</span>需单独进行拓扑优化分析，最后结合常温其余工况拓扑优化分析结果整合3D数据。</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">在Inspire软件中，<span style="color: black;">根据</span>与车身连接处固定约束，并采用单向拔模<span style="color: black;">掌控</span>，对防撞梁施加曲面绑定接触，锁扣位置<span style="color: black;">创立</span>锁扣拉钩点，将锁扣与3个锁孔耦合；散热器质心处<span style="color: black;">创立</span>施力点，并与散热器安装孔耦合，载荷<span style="color: black;">根据</span><span style="color: black;">以上</span>工况施加，约束<span style="color: black;">要求</span><span style="color: black;">根据</span>响应工况进行约束。</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"> Inspire软件中模型设置如图2所示：</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><img src="https://mmbiz.qpic.cn/mmbiz_png/lR4GOtoy9vKNG9qzptYUkSf4iaPR2g7oQY8ibE2yHicfPr1x5C2uMx0bwe5OibicnC6j9rRo7CqBwBfNsgUmj5EhV8w/640?wx_fmt=png&tp=webp&wxfrom=5&wx_lazy=1&wx_co=1" style="width: 50%; margin-bottom: 20px;"></p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><img src="https://mmbiz.qpic.cn/mmbiz_png/lR4GOtoy9vKNG9qzptYUkSf4iaPR2g7oQUDNc1mzYg3kT7YmLic2NNobJduvt7LXmH76QBOrO5qMxBLlmdlzAmdw/640?wx_fmt=gif&tp=webp&wxfrom=5&wx_lazy=1&wx_co=1" style="width: 50%; margin-bottom: 20px;"></p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">图2 Inspire中前端框架总成模型设置图示</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><span style="color: black;">重视</span>：<span style="color: black;">这次</span><span style="color: black;">选取</span>的单位为MPA(mm t N s)</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"> 优化设置的质量<span style="color: black;">目的</span>为：最小质量；应力约束最小安全系数为1.2；约束模态最小频率为35Hz，如图3所示：</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><img src="https://mmbiz.qpic.cn/mmbiz_png/lR4GOtoy9vKNG9qzptYUkSf4iaPR2g7oQoEVNbziczhcPBxtrWQyWY3vc4Z09uptQM1fw8UhfO1EJQBQUwJRexzw/640?wx_fmt=png&tp=webp&wxfrom=5&wx_lazy=1&wx_co=1" style="width: 50%; margin-bottom: 20px;"></p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><img src="https://mmbiz.qpic.cn/mmbiz_png/lR4GOtoy9vKNG9qzptYUkSf4iaPR2g7oQUDNc1mzYg3kT7YmLic2NNobJduvt7LXmH76QBOrO5qMxBLlmdlzAmdw/640?wx_fmt=gif&tp=webp&wxfrom=5&wx_lazy=1&wx_co=1" style="width: 50%; margin-bottom: 20px;"></p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">图3 Inspire拓扑优化设置</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"> 常温工况下，Inspire拓扑优化结果如图4所示：</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><img src="https://mmbiz.qpic.cn/mmbiz_png/lR4GOtoy9vKNG9qzptYUkSf4iaPR2g7oQia6ZPw5Pgcqr28qVqegMXQjHjfNRtPNHgrxQw7Yt4Qmgv8Uia9iapcPKw/640?wx_fmt=png&tp=webp&wxfrom=5&wx_lazy=1&wx_co=1" style="width: 50%; margin-bottom: 20px;"></p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><img src="https://mmbiz.qpic.cn/mmbiz_png/lR4GOtoy9vKNG9qzptYUkSf4iaPR2g7oQUDNc1mzYg3kT7YmLic2NNobJduvt7LXmH76QBOrO5qMxBLlmdlzAmdw/640?wx_fmt=gif&tp=webp&wxfrom=5&wx_lazy=1&wx_co=1" style="width: 50%; margin-bottom: 20px;"></p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">图4 常温工况下，Inspire拓扑优化结果</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">由图4<span style="color: black;">能够</span>看出，Inspire拓扑优化后的一阶固有频率为35.2Hz，满足<span style="color: black;">目的</span><span style="color: black;">需求</span>＞35Hz。</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"> Inspire拓扑优化前后质量如图5所示：</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><img src="https://mmbiz.qpic.cn/mmbiz_png/lR4GOtoy9vKNG9qzptYUkSf4iaPR2g7oQ5wlymcVX4JIgGLzXzibRhQlJsib7Z7pVZjTIgoGLXXMg7jrbsJibHCg1Q/640?wx_fmt=png&tp=webp&wxfrom=5&wx_lazy=1&wx_co=1" style="width: 50%; margin-bottom: 20px;"></p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><img src="https://mmbiz.qpic.cn/mmbiz_png/lR4GOtoy9vKNG9qzptYUkSf4iaPR2g7oQUDNc1mzYg3kT7YmLic2NNobJduvt7LXmH76QBOrO5qMxBLlmdlzAmdw/640?wx_fmt=gif&tp=webp&wxfrom=5&wx_lazy=1&wx_co=1" style="width: 50%; margin-bottom: 20px;"></p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><img src="https://mmbiz.qpic.cn/mmbiz_png/lR4GOtoy9vKNG9qzptYUkSf4iaPR2g7oQFxDMcOvVUvA2B8Bzc1r5DDeicEosdlZOmZD11vak0DIbYELKL0iblUhw/640?wx_fmt=png&tp=webp&wxfrom=5&wx_lazy=1&wx_co=1" style="width: 50%; margin-bottom: 20px;"></p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><img src="https://mmbiz.qpic.cn/mmbiz_png/lR4GOtoy9vKNG9qzptYUkSf4iaPR2g7oQUDNc1mzYg3kT7YmLic2NNobJduvt7LXmH76QBOrO5qMxBLlmdlzAmdw/640?wx_fmt=gif&tp=webp&wxfrom=5&wx_lazy=1&wx_co=1" style="width: 50%; margin-bottom: 20px;"></p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">图5 常温工况下，Inspire拓扑优化前后质量</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">由图5<span style="color: black;">能够</span>看出，Inspire拓扑优化前后本体质量由1.642e-002t<span style="color: black;">减肥</span>至1.606e-003t（<span style="color: black;">因为</span><span style="color: black;">无</span>进行非常<span style="color: black;">知道</span>的分区，有些环境件安装部位<span style="color: black;">亦</span>被减掉了，后期<span style="color: black;">制品</span>设计需加上），<span style="color: black;">减肥</span>效果<span style="color: black;">显著</span>，并且得出力的最佳传递路径。</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"> 同理，散热器安装点刚度<span style="color: black;">根据</span>类似<span style="color: black;">办法</span>，只是高温PP+GF30材料物性不<span style="color: black;">同样</span>，其弹性模型E=2255MPa，其拓扑优化结果如图6所示：</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><img src="https://mmbiz.qpic.cn/mmbiz_png/lR4GOtoy9vKNG9qzptYUkSf4iaPR2g7oQuyljcKnP5l1cIuy3jgX1dH5PRCuSHgjR0ZdgJe7XSmuz59byennreQ/640?wx_fmt=png&tp=webp&wxfrom=5&wx_lazy=1&wx_co=1" style="width: 50%; margin-bottom: 20px;"></p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><img src="https://mmbiz.qpic.cn/mmbiz_png/lR4GOtoy9vKNG9qzptYUkSf4iaPR2g7oQUDNc1mzYg3kT7YmLic2NNobJduvt7LXmH76QBOrO5qMxBLlmdlzAmdw/640?wx_fmt=gif&tp=webp&wxfrom=5&wx_lazy=1&wx_co=1" style="width: 50%; margin-bottom: 20px;"></p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">图6 高温下，Inspire散热器安装点刚度拓扑优化</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">3、OptiStruct拓扑优化</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">在HyperMesh中采用与Inspire相同的分区<span style="color: black;">办法</span>（即只把与吸能盒连接的螺钉孔<span style="color: black;">做为</span>非设计区），再在HyperMesh中前处理网格模型，网格<span style="color: black;">体积</span>为2.5m，网格类型为3D四面体单元，在OptiStruct中采用与Inspire软件相同的设置<span style="color: black;">办法</span>（边界<span style="color: black;">要求</span>、接触、载荷工况、优化约束<span style="color: black;">要求</span>等），最后进行求解分析，其拓扑优化结果如图7所示：</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><img src="https://mmbiz.qpic.cn/mmbiz_png/lR4GOtoy9vKNG9qzptYUkSf4iaPR2g7oQGZ8iaiaghFBfjojtZJJeiaPW4BN6oS4OpsK0AaKxnXyTNicnNypeO4s5eg/640?wx_fmt=png&tp=webp&wxfrom=5&wx_lazy=1&wx_co=1" style="width: 50%; margin-bottom: 20px;"></p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><img src="https://mmbiz.qpic.cn/mmbiz_png/lR4GOtoy9vKNG9qzptYUkSf4iaPR2g7oQUDNc1mzYg3kT7YmLic2NNobJduvt7LXmH76QBOrO5qMxBLlmdlzAmdw/640?wx_fmt=gif&tp=webp&wxfrom=5&wx_lazy=1&wx_co=1" style="width: 50%; margin-bottom: 20px;">图7 常温下，OptiStruct拓扑优化结果</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"> 同理，散热器安装点刚度<span style="color: black;">根据</span>类似<span style="color: black;">办法</span>，只是高温PP+GF30材料物性不<span style="color: black;">同样</span>，其弹性模型E=2255MPa，其拓扑优化结果如图8所示：</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><img src="https://mmbiz.qpic.cn/mmbiz_png/lR4GOtoy9vKNG9qzptYUkSf4iaPR2g7oQlDhUCpHpHG79Ka63wlpTxqozTsfVzZzNAldksoiam6b1zXo6Y3U0qpA/640?wx_fmt=png&tp=webp&wxfrom=5&wx_lazy=1&wx_co=1" style="width: 50%; margin-bottom: 20px;"></p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><img src="https://mmbiz.qpic.cn/mmbiz_png/lR4GOtoy9vKNG9qzptYUkSf4iaPR2g7oQUDNc1mzYg3kT7YmLic2NNobJduvt7LXmH76QBOrO5qMxBLlmdlzAmdw/640?wx_fmt=gif&tp=webp&wxfrom=5&wx_lazy=1&wx_co=1" style="width: 50%; margin-bottom: 20px;"></p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">图8 高温下，OptiStruct散热器安装点刚度拓扑优化</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">4、Inspire和OptiStruct拓扑优化对比结果</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"> 常温下，Inspire和OptiStruct拓扑优化对比结果如图9所示：</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><img src="https://mmbiz.qpic.cn/mmbiz_png/lR4GOtoy9vKNG9qzptYUkSf4iaPR2g7oQibQfShHjpuxEVZuFmRddWKNcOynEPicJHyCMWNTppVJ0c46elG3qmscQ/640?wx_fmt=png&tp=webp&wxfrom=5&wx_lazy=1&wx_co=1" style="width: 50%; margin-bottom: 20px;"></p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><img src="https://mmbiz.qpic.cn/mmbiz_png/lR4GOtoy9vKNG9qzptYUkSf4iaPR2g7oQUDNc1mzYg3kT7YmLic2NNobJduvt7LXmH76QBOrO5qMxBLlmdlzAmdw/640?wx_fmt=gif&tp=webp&wxfrom=5&wx_lazy=1&wx_co=1" style="width: 50%; margin-bottom: 20px;"></p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">图9 常温下，Inspire和OptiStruct拓扑优化对比结果 </p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"> 由图9<span style="color: black;">能够</span>看出，Inspire和OptiStruct拓扑优化结果非常<span style="color: black;">类似</span>，<span style="color: black;">重点</span>的力学传递路径相同，只是局部细节有细微的差别。</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">高温下，Inspire和OptiStruct拓扑优化对比结果如图10所示：</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><img src="https://mmbiz.qpic.cn/mmbiz_png/lR4GOtoy9vKNG9qzptYUkSf4iaPR2g7oQjxZ1gTicicMP8Z6Gl3TXtsOiajyibEpliaO3UGq0vtEF0WnbOMFyDJ9VymA/640?wx_fmt=png&tp=webp&wxfrom=5&wx_lazy=1&wx_co=1" style="width: 50%; margin-bottom: 20px;"></p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><img src="https://mmbiz.qpic.cn/mmbiz_png/lR4GOtoy9vKNG9qzptYUkSf4iaPR2g7oQUDNc1mzYg3kT7YmLic2NNobJduvt7LXmH76QBOrO5qMxBLlmdlzAmdw/640?wx_fmt=gif&tp=webp&wxfrom=5&wx_lazy=1&wx_co=1" style="width: 50%; margin-bottom: 20px;"></p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">图10 高温下，Inspire和OptiStruct散热器刚度拓扑优化对比结果</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"> 由图10<span style="color: black;">能够</span>看出，除了OptiStruct中<span style="color: black;">保存</span>了非设计区外，Inspire和OptiStruct拓扑优化结果非常<span style="color: black;">类似</span>。</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">5、结论</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">Inspire和OptiStruct拓扑优化结果相识度达95%以上，且均符合力的最优传递路径，只是局部细节有所<span style="color: black;">区别</span>，其<span style="color: black;">原由</span>有以下几点：</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"> 第<span style="color: black;">1、</span>Inpire无网格拓扑优化模型<span style="color: black;">无</span>进行<span style="color: black;">详细</span>的分区，<span style="color: black;">因此呢</span>二者在<span style="color: black;">保存</span>材料方面有细微的差别；</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">第<span style="color: black;">2、</span>Inpire无网格划分后台程序采用的是六面体为主，多面体为辅的网格划分<span style="color: black;">办法</span>，而OptiStruct采用的是四面体网格划分；</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"> 第<span style="color: black;">3、</span>Inpire采用默认网格单元尺寸模式，厚度约束为10mm（单元越小，计算时间越长），而OpriStruct网格单元尺寸为2.5mm。</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"> <span style="color: black;">最后</span>，结合Inspire和OptiStruct拓扑优化结果，前端框架总成3D数据如图11所示：</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><img src="https://mmbiz.qpic.cn/mmbiz_png/lR4GOtoy9vKNG9qzptYUkSf4iaPR2g7oQ8u9j0VSubvsjqnKMzbfK8HqaZeWwuypAMpYRiavtZdeI2ICicUjn1fug/640?wx_fmt=png&tp=webp&wxfrom=5&wx_lazy=1&wx_co=1" style="width: 50%; margin-bottom: 20px;"></p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><img src="https://mmbiz.qpic.cn/mmbiz_png/lR4GOtoy9vKNG9qzptYUkSf4iaPR2g7oQUDNc1mzYg3kT7YmLic2NNobJduvt7LXmH76QBOrO5qMxBLlmdlzAmdw/640?wx_fmt=gif&tp=webp&wxfrom=5&wx_lazy=1&wx_co=1" style="width: 50%; margin-bottom: 20px;">图11 前端框架总成拓扑优化3D数据</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">结论：Inspire无网格拓扑优化，操作非常方便，省去了画网格的繁琐时间，给用户带来的<span style="color: black;">极重</span>的便利，并且其拓扑优化结果与OptiStruct结果一致，相比OptiStruct，Inspire软件无网格拓扑优化<span style="color: black;">优良</span>如下：</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">1、优化时间：Inspire从导入模型到<span style="color: black;">最后</span>得到拓扑优化结果不到5个小时（常温和高温的拓扑优化），而OptiStruct从几何清理3D数据，到网格划分，最后得到拓扑优化结果需要大约3天时间（常温和高温拓扑优化，并且<span style="color: black;">夜晚</span>挂机计算），<span style="color: black;">因此呢</span>，Inspire的效率是非常非常高的。Inspire为前期结构设计带来非常大的<span style="color: black;">优良</span>，<span style="color: black;">同期</span>节约了<span style="color: black;">海量</span>时间。</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">2、优化精度：Inspire无网格优化与OptiStruct相识度高达95%以上。</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"> 3、可操作性：Inspire无网格优化采用中文界面，操作相比OptiStruct更为简便，通俗易懂。</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"> 展望：Inspire无网格拓扑优化在<span style="color: black;">必定</span>程度上能够满足绝大<span style="color: black;">都数</span><span style="color: black;">制品</span>的设计<span style="color: black;">需要</span>，<span style="color: black;">然则</span>针对多<span style="color: black;">目的</span>拓扑优化，<span style="color: black;">例如</span>变速箱多<span style="color: black;">目的</span>拓扑优化： </p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><img src="https://mmbiz.qpic.cn/mmbiz_png/lR4GOtoy9vKNG9qzptYUkSf4iaPR2g7oQEsYSLKBJESQWAicY4UcR3CXia0zobSkJySib7EIGxnTZCKJAHVia32AFlQ/640?wx_fmt=png&tp=webp&wxfrom=5&wx_lazy=1&wx_co=1" style="width: 50%; margin-bottom: 20px;"></p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><img src="https://mmbiz.qpic.cn/mmbiz_png/lR4GOtoy9vKNG9qzptYUkSf4iaPR2g7oQUDNc1mzYg3kT7YmLic2NNobJduvt7LXmH76QBOrO5qMxBLlmdlzAmdw/640?wx_fmt=gif&tp=webp&wxfrom=5&wx_lazy=1&wx_co=1" style="width: 50%; margin-bottom: 20px;">
</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">，尚未找到<span style="color: black;">关联</span>功能，<span style="color: black;">期盼</span>后期能够运用。</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">说明：此款前端框架为前期设计，<span style="color: black;">这里</span>版结构满足功能指标的<span style="color: black;">基本</span>上，接着会进行散热器通风热分析，以<span style="color: black;">保证</span>散热效果，后期会结合二者进行结构适当<span style="color: black;">调节</span>。</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><span style="color: black;">-END-</span></p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">▼点击下方查看竞赛详情▼</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><a style="color: black;"><span style="color: black;"><img src="https://mmbiz.qpic.cn/mmbiz_png/lR4GOtoy9vJoXZTOPt9GD0TiaLuhhx0SIibW7QI1cQC9pM5L6EMlBQba0HictxNiaY2Ia8RcTZ4zbRfLU4LG3z0nEA/640?wx_fmt=png&tp=webp&wxfrom=5&wx_lazy=1&wx_co=1" style="width: 50%; margin-bottom: 20px;"></span></a></p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><span style="color: black;">▲投稿即抢千元红包雨<span style="color: black;">▲</span></span></p><strong style="color: blue;"><img src="https://mmbiz.qpic.cn/mmbiz_gif/jZXlUHNuBN5a6JWIdk82cPD8FSSoqjutJcFTXQH1jWPa2pUnwgsOkb95nNBTkMiamwxeAHKFba0FdqKDthpdlibQ/640?tp=webp&wxfrom=5&wx_lazy=1" style="width: 50%; margin-bottom: 20px;"></strong><strong style="color: blue;"><span style="color: black;"><strong style="color: blue;">点击阅读原文，给作者投票！</strong></span></strong>
软文发布论坛开幕式圆满成功。 http://www.fok120.com 你的见解真是独到，让我受益匪浅。 楼主果然英明！不得不赞美你一下！
页:
[1]