Abstract
To simulate the contact and separation of wheels and rails accurately, the stiffness between them should be correct. This paper developed a nonlinear moving wheel element based on a simple point contact scheme to simulate moving train problems, where the element stiffness is set to a power function directly fitted from the finite-element result of the wheel and rail contact analysis. The finite-element result of the wheel/rail contact analysis indicates that the changes in vertical stiffness with changing contact forces can be accurately fitted by using the proposed power function, and the horizontal stiffness can be simply regressed using a constant. The validated example in this paper shows that the nonlinear moving wheel element can simulate the complicated contact and separation problem correctly, both in the displacement and contact force fields, and the major advantage is that a fine mesh is not necessary in the moving train contact analysis.
| Original language | English |
|---|---|
| Pages (from-to) | 330-338 |
| Number of pages | 9 |
| Journal | JVC/Journal of Vibration and Control |
| Volume | 20 |
| Issue number | 3 |
| DOIs | |
| Publication status | Published - 2014 Feb 1 |
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All Science Journal Classification (ASJC) codes
- Materials Science(all)
- Automotive Engineering
- Aerospace Engineering
- Mechanics of Materials
- Mechanical Engineering
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A simple finite element for nonlinear wheel/rail contact and separation simulations. / Ju, Shen-Haw.
In: JVC/Journal of Vibration and Control, Vol. 20, No. 3, 01.02.2014, p. 330-338.Research output: Contribution to journal › Article
TY - JOUR
T1 - A simple finite element for nonlinear wheel/rail contact and separation simulations
AU - Ju, Shen-Haw
PY - 2014/2/1
Y1 - 2014/2/1
N2 - To simulate the contact and separation of wheels and rails accurately, the stiffness between them should be correct. This paper developed a nonlinear moving wheel element based on a simple point contact scheme to simulate moving train problems, where the element stiffness is set to a power function directly fitted from the finite-element result of the wheel and rail contact analysis. The finite-element result of the wheel/rail contact analysis indicates that the changes in vertical stiffness with changing contact forces can be accurately fitted by using the proposed power function, and the horizontal stiffness can be simply regressed using a constant. The validated example in this paper shows that the nonlinear moving wheel element can simulate the complicated contact and separation problem correctly, both in the displacement and contact force fields, and the major advantage is that a fine mesh is not necessary in the moving train contact analysis.
AB - To simulate the contact and separation of wheels and rails accurately, the stiffness between them should be correct. This paper developed a nonlinear moving wheel element based on a simple point contact scheme to simulate moving train problems, where the element stiffness is set to a power function directly fitted from the finite-element result of the wheel and rail contact analysis. The finite-element result of the wheel/rail contact analysis indicates that the changes in vertical stiffness with changing contact forces can be accurately fitted by using the proposed power function, and the horizontal stiffness can be simply regressed using a constant. The validated example in this paper shows that the nonlinear moving wheel element can simulate the complicated contact and separation problem correctly, both in the displacement and contact force fields, and the major advantage is that a fine mesh is not necessary in the moving train contact analysis.
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UR - http://www.scopus.com/inward/citedby.url?scp=84893017403&partnerID=8YFLogxK
U2 - 10.1177/1077546312463753
DO - 10.1177/1077546312463753
M3 - Article
AN - SCOPUS:84893017403
VL - 20
SP - 330
EP - 338
JO - JVC/Journal of Vibration and Control
JF - JVC/Journal of Vibration and Control
SN - 1077-5463
IS - 3
ER -