Three-dimensional train–track–bridge coupled dynamics model based on the explicit finite element method

2021 ◽  
pp. 107066
Author(s):  
Zhi-Ping Zeng ◽  
Fu-Shan Liu ◽  
Wei-Dong Wang
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Three Dimensional ◽  
Train Track ◽  
Dynamics Model ◽  
Coupled Dynamics ◽  
Explicit Finite Element Method ◽  
Explicit Finite Element ◽  
Model Based ◽  
Track Bridge

Analyses of Profile Radial-Axial Ring Rolling Process Based on Explicit Finite Element Method

2014 ◽  
Author(s):  
Zhengkun Feng ◽  
Henri Champliaud
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Dynamic Contact ◽  
Ring Rolling ◽  
Contact Boundary ◽  
Explicit Finite Element Method ◽  
Explicit Finite Element ◽  
Model Based ◽  
Axial Ring ◽  
Element Method

Profile radial-axial ring rolling is a complex bulk forming used to produce seamless rings for critical structural components in many industries, such as machinery, aeronautics, energy and automotive. The process is characterized by high nonlinearity, unsteady three-dimensional deformation, dynamic contact boundary conditions caused by the rotations of ring and rolls. In this paper, a numerical model based on explicit finite element approach is proposed to simulate and analyze the process. An expanded ring with profile section has been obtained by numerical simulations with the dynamic model based on explicit finite element method.

The Study on Crashworthiness Performance of Thin-Walled Structures and the Effect of Welding Performance on it

2011 ◽  
Vol 63-64 ◽  
pp. 655-658
Author(s):  
Qi Hao ◽  
Sheng Jun Wu
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Welded Joints ◽  
Impact Force ◽  
Deformation Energy ◽  
Optimal Shape ◽  
Explicit Finite Element Method ◽  
Explicit Finite Element ◽  
Thin Walled Structures ◽  
Thin Walled

Explicit finite element method is adopted to simulate the crashworthiness performance of four types of typical thin—walled structures used in vehicle by software LS-DYNA. The structures with the same material、area and length are crash by a rigid body with 40km/h in10ms, The crash processes and crashworthiness characters are analyzed by a series crash parameters: deformation energy with unit displacement, impact force and deceleration to look for the optimal shape with crashworthiness. With comparing, the double caps section has ascendant performance than the others. The simulating methods of welded-joints are discussed to analysis their effects on crashworthiness simulation.

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