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Topological shape optimization of heat conduction problems using level set approach

机译:使用水平集方法优化导热问题的拓扑形状

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摘要

A topological shape optimization method for heat conduction problems is developed using a level set method. The level set function obtained from the "Hamilton-Jacobi type" equation is embedded into a fixed initial domain to implicitly represent thermal boundaries and obtain the finite-element response and adjoint sensitivity. The developed method minimizes the thermal compliance, satisfying the constraint of allowable volume by varying the implicit boundary. During optimization, the boundary velocity to integrate the Hamilton-Jacobi equation is obtained from the optimality condition. The newly developed method shows no numerical instability and makes it easy to represent topological shape variations.
机译:使用水平集方法开发了一种用于导热问题的拓扑形状优化方法。从“ Hamilton-Jacobi型”方程获得的水平集函数嵌入到固定的初始域中,以隐式表示热边界,并获得有限元响应和伴随灵敏度。所开发的方法通过改变隐式边界来最小化热柔量,满足了允许体积的约束。在优化过程中,从最优性条件中获得了整合Hamilton-Jacobi方程的边界速度。新开发的方法没有数值不稳定,并且易于表示拓扑形状变化。

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