失效对机械系统动力学的影响

Q3 Mathematics

Pmm Journal of Applied Mathematics and Mechanics Pub Date : 2017-01-01 DOI:10.1016/j.jappmathmech.2018.03.021

A.V. Vlakhova

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On the influence of failure on the dynamics of mechanical systems

A model of the dynamics of a mechanical system that includes bodies whose contact is accompanied by the appearance of small relative displacement and brittle failure of their surfaces with the resultant appearance of an interlayer of chipped off elements between the bodies is constructed. The variation of the potential energy of the system upon displacement of the bodies through interlayer elements is investigated. Cases in which the limit model obtained when the rate of the relative displacement of the bodies reaches a zero value differs from the classical non-holonomic model of the dynamics of the system are identified. Sufficient conditions, which enable evaluation of the error and the boundaries of the applicability of the limit model, are formulated. ©2017

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来源期刊

Pmm Journal of Applied Mathematics and Mechanics 物理-力学

CiteScore

0.70

自引率

0.00%

发文量

审稿时长

6-12 weeks

期刊介绍： This journal is a cover to cover translation of the Russian journal Prikladnaya Matematika i Mekhanika, published by the Russian Academy of Sciences and reflecting all the major achievements of the Russian School of Mechanics.The journal is concerned with high-level mathematical investigations of modern physical and mechanical problems and reports current progress in this field. Special emphasis is placed on aeronautics and space science and such subjects as continuum mechanics, theory of elasticity, and mathematics of space flight guidance and control.