A simulation study on the optimization design of dynamic characteristics of a thin-walled product

LIU Lei; CHENG Dongjian; PENG Yanglin; HAN Xu; GONG Xiaoqing; YAN Huilong

doi:10.16289/j.cnki.1002-0837.2026.01007

Abstract：Objective In the development of products,vibration environments are critical factors to consider,as the dynamic characteristics of these products reflect their ability to withstand vibrational loads.Traditional dynamic design processes for products rely on experimental iterations,leading to long design cycles and high costs.This study proposes a human-computer interactive optimization design method for the dynamic characteristics of products,offering a potential solution to address these challenges.Methods The proposed method integrates the strengths of both human beings and computers,leveraging their respective expertise.By manually interpreting computer-generated modal animation results,structural weaknesses under vibrational loads are identified.Subsequently,a human-computer interactive approach is employed to iteratively optimize the product's topology with strong directional guidance.This method was applied to optimize a thin-walled cylindrical product currently under development.Results After optimization,the product's fundamental frequency increased by 133%without weight gain.Under sinusoidal excitation,node response decreased by 77%and maximum stress decreased by 94%compared to the pre-optimization state.The optimized product meets design requirements with significant improvement.Conclusion The human-computer interactive optimization method for dynamic characteristics has been successfully validated through this thin-walled product.This approach is both feasible and effective,achieving the goal of reducing design cycles and costs which can be served as valuable references for optimizing similar products.