摘要
采用大变形刚塑性有限元法模拟超塑性材料轴对称锥形模约束胀形过程。分析了应变速率敏感性（m值）和模具侧壁倾角（α值）对胀形件厚度分布的影响。模拟结果与实验结果吻合，从而为应用塑性有限元法指导超塑性材料约束胀形的工艺设计和模具设计提供依据。
The constrained superplastic bulging process is investigated by a large rigid-plastic finite element method. The effects of strain-rate sensitivity (value m),the height of the die (value H) and the inclination of the die (value α) on the uniformity in the thickness distribution of superplastic specimen have been studied.Theoretically calculated results are in agreement with experimental results. It provides a basis for improving the technological design of constrained superplastic bulging process by using the finite element method.
出处
《兵工学报》
EI
CAS
CSCD
北大核心
1998年第2期159-162,共4页
Acta Armamentarii
基金
国家自然科学基金
关键词
刚塑性有限元法
超塑性
约束胀形
锌
铝
钛
合金
rigid-plastic finite element method
superplastic
constrained superplastic bulging process
thickness distribution
