宽板弯曲成形过程中板厚变化精化模型  

Fine model of wide sheet thickness variation in bending forming

作　　者：贺广零[1] 李倩妹[2] 洪芳[3] 彭双艳[4] 

机构地区：[1]同济大学建筑工程系,上海200092 [2]中南林业科技大学土木建筑与力学学院,长沙410004 [3]福建工程学院土木工程系,福州350007 [4]长安大学建筑工程学院,西安710061

出　　处：《塑性工程学报》2007年第6期205-208,共4页Journal of Plasticity Engineering

基　　金：国家自然科学基金创新研究群体资助项目(50321803)

摘　　要：基于弹塑性力学基本理论,在考虑板材真实本构关系基础上建立了宽板板厚变化精细化模型。同时,借鉴分三层思想,较好地考虑了宽板在弯曲成形过程中部分纤维层应力反号过程,因此具有较好的精确性和较强的普适性。最后,以铝板为例进行分析,发现计算值和实验值吻合较好。本文研究成果为深入研究弯曲变形过程和科学制定弯曲成形工艺具有一定的理论价值和实用意义。Based on the elasto-plastic mechanics theory, a fine model of wide sheet thickness variation is created considering its real constitutive relationship. Meanwhile, the process of stress turn over of wide sheet bending forming is described by introducing a thought of dividing the sheet into three layers, so it is more accurate and popular. The research results provide some useful information for further research and wide sheet bending techniques design.

关 键 词：宽板 弯曲成形 板厚变化 精化模型 

分 类 号：TG386[金属学及工艺—金属压力加工]