胀环式飞船座椅缓冲器建模方法研究

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振动与冲击 ›› 2009, Vol. 28 ›› Issue (4) : 90-92.

论文

胀环式飞船座椅缓冲器建模方法研究

马春生张金换杜汇良黄世霖

作者信息 +

The Development of the Numerical Model for the Expanding-tube Seat-bumper on the Spacecraft

MA Chunsheng ZHANG Jinhuan DU Huiliang HUANG Shilin

Author information +

文章历史 +

摘要

为了对飞船座椅缓冲器参数进行优化设计，需要建立胀环式座椅缓冲器的仿真模型。基于塑性力学的相关理论，推导了胀环压入过程轴向力的计算公式，建立了胀环扩径变形的力学模型。使用LS-DYNA有限元软件，通过引入虚拟接触面的方法，采用壳单元建立了胀环式缓冲器的有限元模型。通过静态压缩试验和动态冲击试验结果，验证了两种仿真模型的有效性。该模型可以进一步应用于缓冲器参数优化设计研究，建模方法对于同类研究具有重要参考价值。

Abstract

In order to optimize the design parameters of seat-bumper on the spacecraft, it’s necessary to develop the numerical model of the expanding-tube bumper. The formula of the axial force during press expansion was deduced on the basis of plastic mechanic theory. The finite element model of seat-bumper was developed by introducing the virtual contact surface using the LS-DYNA software. These two numerical models were validated by comparing the simulation and test results under static and dynamic loads. These two models can be used for the optimization design of bumper parameters. The method of developing numerical models can be as a reference for other related studies.

导出引用

马春生张金换杜汇良黄世霖. 胀环式飞船座椅缓冲器建模方法研究[J]. 振动与冲击, 2009, 28(4): 90-92

MA Chunsheng ZHANG Jinhuan DU Huiliang HUANG Shilin. The Development of the Numerical Model for the Expanding-tube Seat-bumper on the Spacecraft[J]. Journal of Vibration and Shock, 2009, 28(4): 90-92

中图分类号： V423.5