Low-frequency perturbations of rigid body motions of a viscoelastic inhomogeneous bar

被引：8
|
作者：
Kaplunov, J. [1 ]
Shestakova, A. [1 ]
Aleynikov, I. [2 ]
Hopkins, B. [2 ]
Talonov, A. [3 ]
机构：
[1] Keele Univ, Sch Comp & Math, Keele ST5 5BG, Staffs, England
[2] Amsted Rail, Granite City, IL 62040 USA
[3] Natl Univ Sci & Technol MISiS, Moscow 119049, Russia
来源：
MECHANICS OF TIME-DEPENDENT MATERIALS | 2015年 / 19卷 / 02期
关键词：
Viscoelastic; Microstructure; Perturbation; Rigid body; Low-frequency;
D O I：
10.1007/s11043-015-9256-x
中图分类号：
O3 [力学];
学科分类号：
08 ; 0801 ;
摘要：
This paper deals with a low-frequency analysis of a viscoelastic inhomogeneous bar subject to end loads. The spatial variation of the problem parameters is taken into consideration. Explicit asymptotic corrections to the conventional equations of rigid body motion are derived in the form of integro-differential operators acting on longitudinal force or bending moment. The refined equations incorporate the effect of an internal viscoelastic microstructure on the overall dynamic response. Comparison with the exact time-harmonic solutions for extension and bending of a bar demonstrates the advantages of the developed approach. This research is inspired by modeling of railcar dynamics.
引用
收藏
页码：135 / 151
页数：17
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