摘要
为了解决分段多点成形过程中的技术难题,利用数值模拟软件对其成形过程进行数值模拟.以显式算法模拟加载成形过程,隐式算法模拟卸载回弹过程,从而实现分段多点成形的数值模拟.采用非均匀有理B(NURBS)样条曲线设计过渡区形状,探讨了过渡区大小对成形品质的影响.结果表明,在合理设计过渡区的情况下,分段成形品质好于一次成形.
In order to resolve technique problems in sectional multi-point forming, the forming process was simulated by a finite element software, in which dynamic-explicit formulation was used to analyze the loading processes and implicit algorithm formulation for the unloading processes. The forming surface of transition area was designed by non-uniform rational B-surface （NURBS）, and the width of transition area that has effect on the quality of sectional forming parts was discussed. It is shown that when simulated with an appropriate design of transition area, sectional forming parts possess a better quality than one-step forming parts.
出处
《北京科技大学学报》
EI
CAS
CSCD
北大核心
2008年第1期67-70,76,共5页
Journal of University of Science and Technology Beijing
基金
国家自然科学基金资助项目(No.50275063)
关键词
中厚板
多点成形
分段成形
回弹
plate
multi-point forming
sectional forming
springback
