Title :
Numerical simulation on surface deflection of cylindrical shallow shells
Author :
Sun, Zhenzhong ; Chen, Shenggui
Author_Institution :
Mech. Eng. Dept., Dongguan Univ. of Technol., Dongguan, China
Abstract :
The finite element models of cylindrical shallow shells that could represent automobile panels were established. Simulations of forming and spring back of the cylindrical shallow shells were carried out. From the characteristics of stress distribution and deformation, it is indicated that sheet metal can entirely flat punch over stamping and the surface deflection does not exist after forming. Surface deflection appears after unloading, and exhibits M mode along cylindrical direction. Great residual stress exists along the cylindrical direction of shell, and the surface deflection increases with the increasing of residual compression stress. The residual stress is a necessary condition of the generation of the surface deflection.
Keywords :
deformation; finite element analysis; internal stresses; metal stamping; sheet metal processing; shells (structures); springs (mechanical); structural panels; automobile panels; cylindrical shallow shells; finite element models; forming; numerical simulation; residual compression stress; sheet metal; spring; stamping; stress deformation; stress distribution; surface deflection; Assembly; Automobiles; Capacitive sensors; Engine cylinders; Finite element methods; Mechanical engineering; Numerical simulation; Residual stresses; Springs; Sun; cylindrical shallow shell; numerical simulation; surface deflection;
Conference_Titel :
Mechanic Automation and Control Engineering (MACE), 2010 International Conference on
Conference_Location :
Wuhan
Print_ISBN :
978-1-4244-7737-1
DOI :
10.1109/MACE.2010.5535450
