复合材料增强铝方管耐撞性数值模拟
基于复合材料增强铝方管准静态轴向压溃试验结果,通过有限元仿真方法研究其耐撞性及压溃吸能特性。建立复合材料增强铝方管双层壳单元有限元模型,进行仿真分析获得其变形失效模式及载荷位移曲线等,通过与实验数据对比验证材料模型及有限元模型的准确性,并进行压溃结果分析。基于验证的有限元模型,研究薄弱环节设置、复合材料纤维铺层角度对其轴向压溃吸能特性的影响。结果表明：顶部设置圆孔薄弱环节比设置45°外倒角更能有效改善吸能特性;随着复合材料纤维铺层角度的增大,其吸能能力会随之增强。...
Saved in:
| Published in | 航空材料学报 Vol. 36; no. 2; pp. 56 - 64 |
|---|---|
| Main Author | |
| Format | Journal Article |
| Language | Chinese |
| Published |
北京航空材料研究院,北京,100095%中国民航大学 天津市民用航空器适航与维修重点实验室,天津,300300
2016
|
| Subjects | |
| Online Access | Get full text |
| ISSN | 1005-5053 |
| DOI | 10.11868/j.issn.1005-5053.2016.2.010 |
Cover
| Summary: | 基于复合材料增强铝方管准静态轴向压溃试验结果,通过有限元仿真方法研究其耐撞性及压溃吸能特性。建立复合材料增强铝方管双层壳单元有限元模型,进行仿真分析获得其变形失效模式及载荷位移曲线等,通过与实验数据对比验证材料模型及有限元模型的准确性,并进行压溃结果分析。基于验证的有限元模型,研究薄弱环节设置、复合材料纤维铺层角度对其轴向压溃吸能特性的影响。结果表明：顶部设置圆孔薄弱环节比设置45°外倒角更能有效改善吸能特性;随着复合材料纤维铺层角度的增大,其吸能能力会随之增强。 |
|---|---|
| Bibliography: | aluminum-composite square hybrid tubes; crashworthiness; energy-absorbing characteristics; finite element method LI Xiaonan ,MOU Haolei,ZHOU Jian ,ZOU Tianchun ,XIE Jiang （ 1. Beijing Institute of Aeronautical Materials, Beijing 100095, China; 2. Tianjin Key Laboratory of Civil Aircraft Airworthiness and Maintenance, Civil Aviation University of China, Tianjin 300300, China） 11-3159/V The finite element method was used to perform numerical investigation on crashworthiness and energy-absorbing characteristics based on the dynamic axial crushing results of aluminum-composite square hybrid tubes. The finite element mode of double shell elements of aluminum-composite hybrid tubes was built to obtain the failure modes and loading-displacement curves,and verified by comparing with the quasi-static crushing test results. The influences of triggers and composite ply angles on energy-absorbing characteristics of aluminum-composite hybrid tubes were studied based on the verified models. The results show that the energy-ab |
| ISSN: | 1005-5053 |
| DOI: | 10.11868/j.issn.1005-5053.2016.2.010 |