大连理工大学学报Issue(2)：157-162,6.DOI:10.7511/dllgxb201402001
考虑锻件塑性变形的锻造系统动力学建模
Dynamic modeling for forging system considering plastic deformation of workpiece
摘要
Abstract
A modified model is presented to predict the dynamic responses of the forging system during the forging process,where an elastic-plastic discrete spring model is adopted to simulate the contact interaction between the workpiece and forging dies considering the plastic deformation of workpiece.The dynamic control equation of the forging system subj ected to a forging operation is obtained by combining the finite element method (FEM)and Lagrange equation.A comparison between the results by the explicit FEM of the commercial software LS-DYNA simulations and other results of the previous work is carried out to validate the proposed model.It is shown that the contact boundary condition has significant influence on the dynamic responses of the forging system and the plastic deformation should not be ignored for an accurate calculation of the responses.关键词
锻造系统/接触边界/弹塑性弹簧/动力学建模Key words
forging system/contact boundary/elastic-plastic spring/dynamic modeling分类
数理科学引用本文复制引用
李刚,孙文杰..考虑锻件塑性变形的锻造系统动力学建模[J].大连理工大学学报,2014,(2):157-162,6.基金项目
“九七三”国家重点基础研究发展计划资助项目(2006CB705403) （2006CB705403）
