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arXiv 2603.00962math.OCcs.NAmath.NA
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一种用于非自共轭拓扑优化的惩罚方法

A Penalty Method for Non-Self-Adjoint Topology Optimization

Institute of Computational Mathematics and Scientific/Engineering Computing, Academy of Mathematics and Systems Science, Chinese Academy of Sciences(中国科学院数学与系统科学研究院计算数学与科学工程计算研究所);University of Chinese Academy of Sciences & Institute of Computational Mathematics and Scientific/Engineering Computing, Academy of Mathematics and Systems Science, Chinese Academy of Sciences(中国科学院大学与中国科学院数学与系统科学研究院计算数学与科学工程计算研究所)

Wei Gong, Yuanda Ye

AI总结:

本文提出了一种用于非自共轭拓扑优化的惩罚方法,通过引入凸非局部周长近似方案,解决了顺应机制和热传导问题,并提出了广义材料插值函数以控制拓扑连通性。

摘要:

我们提出了一种新的惩罚方法框架,用于非自共轭拓扑优化问题,以顺应机制问题为例,通过引入一个凸非局部周长近似方案。我们严格分析了由惩罚方法导出的优化问题的解的存在性。此外,我们证明了离散问题Γ-收敛到连续问题,确保了不同尺度之间的一致性。为了解决离散问题,我们开发了一种投影梯度法,该方法保证了目标函数的严格单调下降。我们还将该框架扩展到热传导问题,并提出了一个广义材料插值函数(GMIF),这允许在最终最优设计中对拓扑连通性进行有针对性的控制。在顺应机制和热传导问题上的数值实验验证了所提方法的有效性。该框架为计算数学中的复杂优化挑战提供了一种稳健的方法,具有在工程设计中的潜在应用。

英文摘要:

We propose a novel penalty method framework for the non-self-adjoint topology optimization problems, taking compliant mechanism problems as an example, by incorporating a convex nonlocal perimeter approximation scheme. We rigorously analyze the existence of solutions to the optimization problem derived from the penalty method. Furthermore, we establish that the discrete problem \(Γ\)-converges to the continuous problem, ensuring consistency across scales. To solve the discrete problem, we develop a projected gradient method that guarantees strict monotonic descent of the objective function. We also extend the framework to the heat dissipation problem and propose a generalized material interpolation function (GMIF), which allows for a targeted control of the topological connectivity in the resulting optimal design. Numerical experiments on the compliant mechanism and heat dissipation problems validate the effectiveness of the proposed method. This framework provides a robust approach to addressing complex optimization challenges in computational mathematics with potential applications in engineering design.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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