3-D rolling processing analysis by Fast Multipole Boundary Element Method

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• 作者：Chunxiao Yu^a ; ^{chxy@ysu.edu.cn" class="auth_mail" title="E-mail the corresponding author} ; Deyi Liu^b ; ^{deyi_liu@163.com" class="auth_mail" title="E-mail the corresponding author} ; Yongjiang Zheng^c ; ^{zhengyj2014@ysu.edu.cn" class="auth_mail" title="E-mail the corresponding author} ; Guangxian Shen^d ; ^{sgx35@ysu.edu.cn" class="auth_mail" title="E-mail the corresponding author}
• 关键词：FM-BEM ; Node-to-surface contact ; Linearization ; Improved GMRES ; Cold rolling process
• 刊名：Engineering Analysis with Boundary Elements
• 出版年：2016
• 出版时间：September 2016
• 年：2016
• 卷：70
• 期：Complete
• 页码：72-79
• 全文大小：1297 K

文摘

This paper presents the numerical analysis of 3-D rolling processing by a kind of Fast Multipole Boundary Element Method (FM-BEM). The FM-BEM combines the Fast Multipole Method (FMM) and Boundary Element Method (BEM), for which the fundamental formulations and numerical implementations are obtained. Then a node-to-surface frictional contact model is provided and contact constraints are linearized. For the solution system, an improved Generalized Minimal Residual Algorithm (GMRES) is employed as a fast solver. Combined with high performance computing, a cold rolling process of 2030 four-high mill with a width-to-thickness ratio of 1850 is successfully simulated, and comprehensive new rolling information is obtained. Numerical results show that the presented FM-BEM requires less artificial assumptions, and it has higher precision and efficiency as compared to the traditional BEM, Finite Element Method (FEM) and Finite Difference Method (FDM). It is a breakthrough progress in the simulation of rolling engineering, which is of great significance.