一种自由度缩减和收敛加速的高效等几何拓扑优化方法

作者：Yang Yuhao; Zheng Wei; Wang Yingjun^*

来源：China Mechanical Engineering, 2022, 33(23): 2811-2821.

DOI：10.3969/j.issn.1004-132X.2022.23.005

• convergence acceleration
• degree of freedom(DOF) reduction
• efficient optimization method
• isogeometric analysis
• topology optimization

In order to improve the efficiency of isogeometric topology optimization(ITO), an efficient ITO method was proposed, which accelerated ITO from DOF reduction and convergence acceleration. The DOF reduction algorithm included DOF reduction based on displacement changes and empty elements, and the convergence acceleration algorithm included design variable reduction and gray-scale suppression. Through 2D and 3D cases, it is demonstrated that the speedup ratio of the proposed efficient ITO method may reach to 1.56～6.02 compared with traditional ITO when optimization accuracy is ensured, which significantly improves the efficiency of ITO and provides a strong support for the efficient and high-quality design of product structures. ? 2022 China Mechanical Engineering Magazine Office.

• 单位
  数字制造装备与技术国家重点实验室; 华中科技大学; 华南理工大学