锥形模缩口力影响因素分析与凹模半锥角优化设计  

An Analysis of Necking Pressure under the Influence and Optimum of Semi-coning with Conical Die

作　　者：徐明发[1] 卢险峰[1] 

机构地区：[1]南昌大学机电工程学院,江西南昌330031

出　　处：《南昌大学学报（工科版）》2006年第4期348-350,354,共4页Journal of Nanchang University(Engineering & Technology)

基　　金：南昌大学校基金资助项目(Z02888)

摘　　要：利用最新推导出的考虑缩口变形中弯曲作用,选用幂函数硬化规律的应力应变关系的锥形模缩口力计算公式,结合常用的Q235钢管和T2铜管缩口实验数据,对影响缩口力的因素K、n、t、mN、μ及α,作了单因素影响的更直观分析,进而,分别用黄金分割法和微分法两种不同的方法对锥形凹模半锥角进行了优化设计,获得了使缩口力最小时的αopt-μ的关系式与关系曲线.Using the newest extrapolated necking pressure calculated formula of conical die on bending effect of considering necking deformation and the stress response relationship of choosing exponential function sclerous disciplinarian, in conjunction with the necking experimental data of commercial Q235 and T2 pipes, analysis on a single factor K, n, t, mN,μ and α is made. Furthermore, optimum design on semi-coning of conical die is done with golden section and differential method, and the αopt-μ relation between otopt and μ is derived to obtain the minimum

关 键 词：单因素分析 黄金分割法 微分法 凹模半锥角 

分 类 号：TG302[金属学及工艺—金属压力加工] TG386