›› 2009, Vol. 30 ›› Issue (9): 2830-2836.

• Numerical Analysis • Previous Articles     Next Articles

3D FEM in moving coordinate for transient response under moving loads

ZHAI Wei, SONG Er-xiang   

  1. Department of Civil Engineering, Tsinghua University, Beijing 100084, China
  • Received:2008-03-20 Online:2009-09-10 Published:2010-03-24

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Abstract:

A finite element method in moving coordinate is formulated in order to analyze the vibrations of railway embankment and ground under moving loads. A viscoelastic boundary condition in moving coordinate is also formulated to simulate the waves transmitting at boundaries. In the formulation the ground is assumed to be a layered viscoelastic half-space medium; and the railway embankment is modeled as a viscoelastic beam. The transient state numerical results agree well with the field measurement data at Ledsgård, which shows that the proposed method is effective in solving moving loads problems.

Key words: moving loads, finite element method, finite element method in moving coordinate

CLC Number: 

  • O 242.21
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