FEM Analysis of Spring-backs in Age Forming of Aluminum Alloy Plates

查看全文 作　　者：Huang [1]Lin;Wan [1]Min;Chi [2]Cailou;Ji [2]Xiusheng

机构地区：[1]Department of Aircraft Manufacturing Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100083, China;[2]Technology Research Institute, Shenyang Aircraft Corporation, Shenyang 100034, China

出　　处：《Chinese Journal of Aeronautics》索引2007年第20卷第6期,共6页

基　　金：National Natural Science Foundation of China (50675010) 摘　　要：The age forming technology, characterized by huge spring-backs, has been developed to manufacture large integral wing-skin panel parts, which necessitates devising a method of predicting spring-backs. A 7B04-T7451 aluminum alloy creep test in tension is accomplished at 155 °C, and the creep curves are obtained. The material constants of the mechanism-based creep constitutive equations are determined through experiments. The age forming process and the spring-backs of 7B04 aluminum alloy plates are analyzed using the commercial finite element software ABAQUS. The effects of plate thickness and forming time on spring-backs are researched. The spring-backs decrease with the increase of plate thickness and forming time. The test results verify the reliability of the finite element method (FEM) analysis. 关键词：铝合金金属老化飞机航天材料

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FEM Analysis of Spring-backs in Age Forming of Aluminum Alloy Plates

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