摘要
根据虚功原理和对板料在拉延筋处变形的分析 ,得到平均外力的计算公式 ,然后参考Levy方法提出了一种计算拉延筋约束阻力的参数拟合公式 ,并根据试验得到参数值。公式中考虑了材料的各向异性和应变速率敏感性。通过将计算结果与Nine的试验结果进行对比 。
Based on the virtual work principle and analysis to drawbead deformation,the average resulting force is calculated.Then a parameter fitting formula for drawbead restraining force calculation is proposed by using Levy's method for reference.Parameters can be determined by experiment.Anisotropy and strain rate sensitivity are taken into account in the formula.The calculated results are compared with Nine's experimental results and the validation of this computation method to different materials is verified.
出处
《锻压技术》
CAS
CSCD
北大核心
2001年第6期11-13,共3页
Forging & Stamping Technology
基金
国家 8 63/CIMS主题单元目标产品项目 (863 51 1 82 0 0 2 0 )资助
关键词
板料成形
等效拉延筋
拉延筋约束阻力
各向异性
应变速率敏感
Sheet metal forming Equivalent drawbead Drawbead restraining force Anisotropy Strain rate sensitivity
