复合材料C型柱轴压失效分析的层合壳建模方法

doi:10.7527/S1000-6893.2018.22395

固体力学与飞行器总体设计

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复合材料C型柱轴压失效分析的层合壳建模方法

解江^1,2, 宋山山^1,2, 宋东方^1,2, 冯振宇^1,2, 牟浩蕾^1,2, 张雪晗^1,2

1. 中国民航大学适航学院, 天津 300300;
2. 民航航空器适航审定技术重点实验室, 天津 300300

出版日期:2019-02-15 发布日期:2018-10-10
通讯作者: 解江 E-mail:xiejiang5@126.com
基金资助:
中央高校基本科研业务费专项资金（3122017089）

Stacked shell modeling method for failure analysis of composite C-channels subject to axial compression

XIE Jiang^1,2, SONG Shanshan^1,2, SONG Dongfang^1,2, FENG Zhenyu^1,2, MU Haolei^1,2, ZHANG Xuehan^1,2

1. College of Airworthiness Civil Aviation University of China, Tianjin 300300, China;
2. Key Laboratory of Civil Aircraft Airworthiness Technology, CAAC, Tianjin 300300, China

Online:2019-02-15 Published:2018-10-10
Supported by:
the Fundamental Research Funds for the Central Universities (3122017089)

摘要/Abstract

摘要： 由于易于设计、制造以及承载效率高，C型柱作为一种典型的垂向支撑结构，大量应用于大型运输类飞机货舱地板下部。以复合材料C型柱结构为对象，并结合复合材料C型柱轴向压缩试验，旨在发展其在轴向压缩载荷下失效分析的有限元方法。首先，对材料模型的应力-应变曲线进行参数化研究，明确Lavadèze材料单层模型、Puck IFF基体失效准则和Yamada Sun纤维失效准则中参数的物理意义并给出取值建议。其次，建立"层合壳"模型，模拟轴向压缩载荷下破坏失效的力学行为，并与试验结果进行对比分析。研究结果表明，该建模方法能够较好地模拟渐进压缩破坏过程，平均压缩载荷、比吸能的预测值与试验结果具有较好的一致性。

关键词: C型柱, 参数化研究, 层合壳模型, 失效分析, 比吸能

Abstract: Due to designability, manufacturability and high load-carrying efficiency, the C-channels has been widely applied to the lower component of the cargo floor of large transport aircraft as a typical support structure. Focusing on the typical composite C-channels, the finite element analysis method for the failure under axial compressive load is developed combed to the C-channel axial compression test. First, parameter study focused on the stress-strain curve of the composite material model was conducted, identifying and analyzing the physical significance and the value of the parameters in Lavadèze model, Puck IFF matrix failure criterion and Yamada Sun fiber failure criterion. Second, the "stacked shell" model was established. The mechanical behavior under axial compressive load was simulated, and then compared with the test. The results show that the model can well simulate the progressive crushing process, and has good consistency with the test in terms of average crushing load and specific energy absorption.

Key words: C-channels, parametric study, stacked shell model, failure analysis, specific energy absorption

中图分类号:

解江, 宋山山, 宋东方, 冯振宇, 牟浩蕾, 张雪晗. 复合材料C型柱轴压失效分析的层合壳建模方法[J]. 航空学报, 2019, 40(2): 522395-522395.

XIE Jiang, SONG Shanshan, SONG Dongfang, FENG Zhenyu, MU Haolei, ZHANG Xuehan. Stacked shell modeling method for failure analysis of composite C-channels subject to axial compression[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2019, 40(2): 522395-522395.

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E-mail：hkxb@buaa.edu.cn

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主管单位：中国科学技术协会主办单位：中国航空学会北京航空航天大学

复合材料C型柱轴压失效分析的层合壳建模方法

Stacked shell modeling method for failure analysis of composite C-channels subject to axial compression

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