|Table of Contents|

Numerical Analysis for Dynamic Responses of Beams Subjected to Moving Loads with Non-uniform Motion

《南京理工大学学报》(自然科学版)[ISSN:1005-9830/CN:32-1397/N]

Issue:
2011年02期
Page:
204-208
Research Field:
Publishing date:

Info

Title:
Numerical Analysis for Dynamic Responses of Beams Subjected to Moving Loads with Non-uniform Motion
Author(s):
CHEN QiangYANG Guo-laiWANG Xiao-fengGE Jian-li
School of Mechanical Engineering,NUST,Nanjing 210094,China
Keywords:
dynamic responses finite element methods modal superposition moving masses non-uniform motions inertia effect
PACS:
O327
DOI:
-
Abstract:
To analyze the dynamic responses of supporting beams subjected to moving loads with large velocities,large accelerations or large mass,a modeling method combining the finite element method with the modal superposition method is derived.A system of ordinary differential equations about modes coordinates is deducted,which has time-varying coefficients and can be solved by applying Newmark-β algorithm.The method is proved equivalent to the present methods by comparing references and the ABAQUS model.Through analyzing dynamic responses of supporting beams subjected to moving loads with three motion styles(uniform,accelerated and decelerated),this paper concludes that the moving loads’ inertia effect is significant when a moving load has large mass,large velocity or large acceleration.

References:

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Last Update: 2012-04-30