| 获取＂动力硬化＂的一般程式 |
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| 引用本文： | 张大钧,张海根,刘又午.获取＂动力硬化＂的一般程式[J].天津大学学报(英文版),1995(1). |
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| 作者姓名： | 张大钧 张海根 刘又午 |
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| 作者单位： | 天津大学 |
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| 摘 要： | 阐述一种获取＂动力硬化＂的一般程式。基于凯恩方程导出做大范围运动任意柔体的运动方程。用几何非线性应变一位移关系和角速度的非线性表达式正确实现线性化，一般情况下可自然获取＂动力硬化＂项。休斯敦方法中偏速度和偏角速度阵列的概念和推导拓宽到柔体，并做为分析的基础。通过用于梁和板模型数值计算的结果证实了所述程式是普遍有效的。
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| 关 键 词： | 动力硬化，柔性多体动力学，凯恩方程，休斯敦方法 |
A GENERAL PROCEDURE TO CAPTURE THE "DYNAMIC STIFFNESS |
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| Zhang Dajun, Zhang Haigen, Liu Youwu.A GENERAL PROCEDURE TO CAPTURE THE "DYNAMIC STIFFNESS[J].Transactions of Tianjin University,1995(1). |
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| Authors: | Zhang Dajun Zhang Haigen Liu Youwu |
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| Abstract: | A general procedure to capture the "dynanmic Stiffness" is presented in this paper. The governing equations of motion are formulated for an arbitrary flexible body in large overall motion based on Kane's equations . The linearization is performed peroperly by means of geometrically nonlinear straindisplacement relations and the nonlinear expression of angular velocity so that the "dynamical stiffness" terms can be captured naturally in a general tcase. The concept and formulations of partial velocity and angular velocity arrays of Huston's method are extended to the flexible body and form the basis of the analysis. The validity and generality of the procedure presented in the paper are verified by numerical results of its application in both the beam and plate models. |
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| Keywords: | dynamic stiffness flexible multibody dynamics Kane's equations Huston's method |
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