【摘 要】
：
Press bend forming has been widely used as the traditional forming method for integrally stiffened aircraft panels.The aim of this study is to establish an
【出 处】
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2012 Postdoctoral Symposium of China on Materials Science &a
论文部分内容阅读
Press bend forming has been widely used as the traditional forming method for integrally stiffened aircraft panels.The aim of this study is to establish an FEM model for this forming process.A special simulation procedure and a calculation method for the punch and die boundary condition based on the bending line coordinates are proposed.The simulation of a seven step press bend forming process of doubly curved integrally stiffened aircraft panels is realized for the first time, and it could well simulate the real fabrication process, so that it could assist in studying this complicated forming process.Stress and strain distributions are analyzed in detail, which reveals the deformation mechanics of this process.With quantitative comparisons, it can be concluded that forming quality of the seven step press bend forming is quite good, considering both the forming precision and the surface quality.
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