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| FEM Analysis of Spring-backs in Age Forming of Aluminum Alloy Plates | |
| 作者姓名： | Huang Lin Wan Min Chi Cailou Ji Xiusheng |
| 作者单位： | [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 |
| 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 ℃, 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 |
| 收稿时间： | 2007-06-21 |
| 修稿时间： | 2007-09-19 |
FEM Analysis of Spring-backs in Age Forming of Aluminum Alloy Plates |
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| Huang Lin Wan Min Chi Cailou Ji Xiusheng.FEM Analysis of Spring-backs in Age Forming of Aluminum Alloy Plates[J].Chinese Journal of Aeronautics,2007,20(6):564-569. | |
| Authors: | Huang Wan Chi Cailoub Ji Xiushengb |
| Institution: | aDepartment of Aircraft Manufacturing Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100083, China bTechnology Research Institute, Shenyang Aircraft Corporation, Shenyang 100034, China |
| Abstract: | 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 ℃, 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 formingtime 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. |
| Keywords: | aluminum alloy age forming constitutive equation FEM spring-back Plates Aluminum Alloy Forming analysis test results verify reliability the finite element method decrease increase time effects plate thickness forming process plates commercial software ABAQUS material constants constitutive equations |
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