包带连接建模与非线性动力学特性分析

白绍竣;尉飞;郑钢铁

振动与冲击 ›› 2010, Vol. 29 ›› Issue (5) : 5-10.

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PDF(2262 KB)
振动与冲击 ›› 2010, Vol. 29 ›› Issue (5) : 5-10.
论文

包带连接建模与非线性动力学特性分析

  • 白绍竣1;尉飞1;郑钢铁2
作者信息 +

Modeling of Marman clampband joint and its nonlinear dynamic analysis

  • BAI Shao-jun1;WEI Fei1;ZHENG Gang-tie2
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文章历史 +

摘要

在航天工程中,包带连接机构是应用最为广泛的星箭连接分离机构,其主要由两个半圆形钢带(包带)和若干V形截面的卡块组成。为研究包带连接的力学特性,首先分析了包带连接中各个部件之间的接触力以及接触力之间的关系。然后通过将接触力等效为有限单元节点载荷的方法,把包带连接加入到整体结构的有限元模型当中。对于包含包带连接的结构,其动力学方程为非线性微分方程,方程的求解采用了Newmark直接积分法。最后,采用所提出的建模方法对一个标准接口的包带连接进行了计算,分析了包带连接的非线性动力学特性以及预紧力的影响。

Abstract

The Marman clampband joint, which is made of several V-segments held by two tensioned straps, is widely used in the aerospace industry to connect and disconnect the launch vehicles and satellites. To investigate the dynamic characteristics of Marman clampband joint, the contact forces between the components of Marman clampband joint and the relationship between them are analyzed. By replacing these contact forces with equivalent element node loads, the Marman clampband joint is incorporate into formal finite element model. The dynamic equations of structures containing Marman clampband joint are nonlinear differential equations which are solved by the Newmark's direct integration method. Finally, a standard Marman clampband joint is analyzed as an example to verify the proposed method. The nonlinear dynamic characteristics of Marman clampband joint and the influence of pretension are discussed.

关键词

包带连接 / 卫星 / 非线性动力学

Key words

Marman clampband joint / satellite / nonlinear dynamics

引用本文

导出引用
白绍竣;尉飞;郑钢铁. 包带连接建模与非线性动力学特性分析[J]. 振动与冲击, 2010, 29(5): 5-10
BAI Shao-jun;WEI Fei;ZHENG Gang-tie. Modeling of Marman clampband joint and its nonlinear dynamic analysis[J]. Journal of Vibration and Shock, 2010, 29(5): 5-10

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