Large Rotation Finite Element Analysis of 3D Beams Based on Incremental Rotation Vector and Exact Strain Measures

2020 ◽  
pp. 1147-1158
Author(s):  
Domenico Magisano ◽  
Leonardo Leonetti ◽  
Antonio Madeo ◽  
Giovanni Garcea
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Rotation Vector ◽  
Element Analysis ◽  
Large Rotation ◽  
Strain Measures ◽  
Incremental Rotation

Strain gauge measurement of wheel-rail interaction forces

1997 ◽  
Vol 32 (3) ◽  
pp. 183-191 ◽  
Author(s):  
J Jönsson ◽  
E Svensson ◽  
J T Christensen
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Measuring Technique ◽  
Element Analysis ◽  
Interaction Forces ◽  
Beam Elements ◽  
The Finite Element Analysis ◽  
Gauge Measurement ◽  
Strain Measures

A theoretical basis for quasi static determination of wheel—rail interaction forces using strain measures in the foot of the rail is given. Vlasov's theory for thin-walled beams is used in combination with continuous translational and rotational elastic supports based on smoothing out the stiffness of the rail sleepers. The smoothing out of the rotational elastic support has traditionally not been done. The use of this model is validated by the decay lengths of the problem and through finite element analysis. The finite element analysis is performed using discrete sleeper stiffness and Vlasov beam elements. The sensitivity of the measuring technique to parameter variations is illustrated and an example shows the simplicity of the proposed direct measuring technique.

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