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具有分数导数型本构关系的粘 弹性柱的动力稳定性

李根国 朱正佑 程昌钧

应用数学和力学2001,Vol.22Issue(3):250-258,9.
应用数学和力学2001,Vol.22Issue(3):250-258,9.

具有分数导数型本构关系的粘 弹性柱的动力稳定性

Dynamical Stability of Viscoelastic Column With Fractional Derivative Constitutive Relation

李根国 1朱正佑 1程昌钧1

作者信息

  • 1. 上海市应用数学和力学研究所,
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摘要

Abstract

The dynamic stability of simple supported viscoelastic column, subjected to a periodic axial force, is investigated. The viscoelastic material was assumed to obey the fractional derivative constitutive relation. The governing equation of motion was derived as a weakly singular Volterra integro-partial-differential equation, and it was simplified into a weakly singular Volterra integro-ordinary-differential equation by the Galerkin method. In terms of the averaging method, the dynamical stability was analyzed. A new numerical method is proposed to avoid storing all history data. Numerical examples are presented and the numerical results agree with the analytical ones.

关键词

粘弹性柱/分数导数型本构关系/平均化方法/弱奇异性Volterra积分_ 微分方程/动力稳定性

分类

数理科学

引用本文复制引用

李根国,朱正佑,程昌钧..具有分数导数型本构关系的粘 弹性柱的动力稳定性[J].应用数学和力学,2001,22(3):250-258,9.

应用数学和力学

OA北大核心CSCD

1000-0887

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