单曲率蒙皮零件柔性多点模具拉形过程的数值模拟与优化  

Numerical Simulation and Optimization of Stretch Forming Process of Single Curvature Skin Part With Reconfigurable Tooling

作　　者：白雪飘[1] 曾元松[1] 李志强[1] 

机构地区：[1]北京航空制造工程研究所

出　　处：《航空制造技术》2006年第11期85-88,共4页Aeronautical Manufacturing Technology

摘　　要：柔性多点模具是由一系列高度可调的小冲头根据需要组合形成离散模具型面的模具系统。本文通过有限元数值模拟方法,针对某典型单曲率零件分析了弹性垫层以及回弹对成形过程的影响,并通过调整和优化模具外形包络面,使数值模拟的零件外形与目标零件外形吻合较好,为实际零件的成形和柔性多点模具型面的确定提供了重要的依据。Reconfigurable tooling is a system which consists of numerous pins with hemispherical tips, and the working surface of the tooling can be changed by changing the position of the pins. According to a typical single curvature part, the effect of interpolating polymer layer and spring-back on stretch forming process with reconfigurable tooling is analyzed by means of finite element numerical simulation method. With the aid of adjusting and optimizing the tooling surface, the part shape by numerical simulation can well coincide with the object part shape, which provides an important basis for forming the actual part and determining the reconfigurable tooling surface.

关 键 词：柔性多点模具 蒙皮拉形 弹性垫层 回弹 数值模拟 

分 类 号：V261[航空宇航科学与技术—航空宇航制造工程]