Comments on: 通过密度方法进行拓扑优化 - by COMSOL //m.COMSOL.com/blogs/performing-topology-optimization-with-the-density-method 发布博客 Mon, 08 Dec 2025 11:39:49 +0000 hourly 1 https://wordpress.org/?v=6.7.2 By: 嘉乐 张 //m.COMSOL.com/blogs/performing-topology-optimization-with-the-density-method/#comment-47243 Mon, 08 Dec 2025 11:39:49 +0000 http://cn.staging.comsol.com/blogs?p=226941#comment-47243 In reply to 屹磊 金.

感谢解答，intop1(dtopo1.theta)/intop1(1)类似内置的平均材料体积因子吗？，请问可以设置成intop1(dtopo1.theta_p)/intop1(1)吗

]]> By: 屹磊 金 //m.COMSOL.com/blogs/performing-topology-optimization-with-the-density-method/#comment-47053 Tue, 02 Dec 2025 06:30:20 +0000 http://cn.staging.comsol.com/blogs?p=226941#comment-47053 In reply to 嘉乐 张.

可以实现，平均材料体积因子 dtopo1.theta_avg 指的是设计变量 dtopo1.theta 在整个设计域上的平均值

]]> By: 嘉乐 张 //m.COMSOL.com/blogs/performing-topology-optimization-with-the-density-method/#comment-46593 Thu, 13 Nov 2025 05:44:20 +0000 http://cn.staging.comsol.com/blogs?p=226941#comment-46593 您好，我想在comsol6.2中将A物理场和B物理场的拓扑优化，用同一个设计变量联系起来实现双目标优化，即A场参数的插值函数设计变量为theta_p，B场插值的设计变量为1-theta_p？这样可以实现吗？然后我想请问一下平均材料体积因子dtopo1.theta_avg这个参数的表达式是什么？提前感谢您的解答

]]> By: 屹磊 金 //m.COMSOL.com/blogs/performing-topology-optimization-with-the-density-method/#comment-46323 Tue, 04 Nov 2025 08:34:54 +0000 http://cn.staging.comsol.com/blogs?p=226941#comment-46323 In reply to 家乐 樊.

不可以，设计变量的更新是由优化求解器控制的，不支持手动修改。

]]> By: 屹磊 金 //m.COMSOL.com/blogs/performing-topology-optimization-with-the-density-method/#comment-46313 Tue, 04 Nov 2025 08:33:12 +0000 http://cn.staging.comsol.com/blogs?p=226941#comment-46313 In reply to bingbing jing.

在拓扑优化中控制变量场指的就是密度场，密度场的离散化方式有两种，分别是线性和常数，线性对应的密度场是定义在节点上的，而常数对应的密度场是定义在单元上的。

]]> By: 家乐 樊 //m.COMSOL.com/blogs/performing-topology-optimization-with-the-density-method/#comment-46183 Mon, 03 Nov 2025 03:31:59 +0000 http://cn.staging.comsol.com/blogs?p=226941#comment-46183 你好，请问一下我可以修改拓扑优化中设计变量的迭代方程吗，如果可以，是在哪里修改它的代码呢?

]]> By: bingbing jing //m.COMSOL.com/blogs/performing-topology-optimization-with-the-density-method/#comment-46033 Tue, 28 Oct 2025 02:32:51 +0000 http://cn.staging.comsol.com/blogs?p=226941#comment-46033 In reply to Esther Du.

请问您说的控制变量场指的是不同的形函数插值方法吗

]]> By: Esther Du //m.COMSOL.com/blogs/performing-topology-optimization-with-the-density-method/#comment-45823 Tue, 21 Oct 2025 01:52:16 +0000 http://cn.staging.comsol.com/blogs?p=226941#comment-45823 In reply to bingbing jing.

bingbing jing 您好，您可以为控制变量场选择节点离散和单元离散两种方式，但示例模型使用亥姆霍兹滤波，因此采用了单元离散。

]]> By: bingbing jing //m.COMSOL.com/blogs/performing-topology-optimization-with-the-density-method/#comment-45803 Mon, 20 Oct 2025 11:21:03 +0000 http://cn.staging.comsol.com/blogs?p=226941#comment-45803 请问这样的优化问题，伪密度是定义在节点上，还是定义在单元上，这对我很重要，谢谢

]]> By: Kristian Ejlebjærg Jensen //m.COMSOL.com/blogs/performing-topology-optimization-with-the-density-method/#comment-39613 Mon, 03 Feb 2025 12:55:17 +0000 http://cn.staging.comsol.com/blogs?p=226941#comment-39613 In reply to dadiao hu.

Hi Daidao Hu

Yes, that is possible using the Optimization study step. The district_heating_optimization application library model demonstrates this.

Best regards,

Kristian E. Jensen

Technical Product Manager, Optimization

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