Adaptive mesh optimization for improved One-Step Forming
To reduce the simulation time and improve solution accuracy,an adaptive mesh optimization method is proposed for one-step forming simulation of auto-body panels.For a given auto-body part model,the state variables of model,such as thickness,strain and stress,is firstly estimated through one-step inverse forming method.Incorporating the distribution of these physical properties and geometric characteristics of model,an adaptive node placement technique is presented,which implies that in the regions with high curvature or strain-rate a high mesh density is desirable and on the contrary it is sparse.Simultaneously,the features of the original mesh,such as welding point,a stiffener for reinforcement,forming lines or holes in the interior of model,are preserved in the process of mesh optimization.Finally,numerical examples are shown to demonstrate that the proposed optimization method here exhibits good performance.
Adaptive Mesh optimization Forming simulation One-step forming
Ping Hu Mingzeng Liu Baojun Li Xiangkui Zhang Guozhe Shen
School of Automotive Engineering,Faculty of Vehicle Engineering and Mechanics Dalian University of Technology,Dalian 116024,China;State Key Laboratory of Structural Analysis for Industrial Equipment Dalian University of Technology,Dalian 116024,China
国际会议
沈阳
英文
883-890
2013-07-06（万方平台首次上网日期，不代表论文的发表时间）