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LiToTac: An Interactive-Interface Software for Finite Element Analysis of Multiple Contact Dynamics

Lei Peng1,2, Zhiqiang Feng1,2,*, Pierre Joli2, Christine Renaud2

School of Mechanics and Engineering, Southwest Jiaotong University, Chengdu, 610031, China.
Laboratory of Mechanics and Energetics, Université Paris-Saclay, Evry, 91020, France.

* Corresponding Author: Zhi-Qiang Feng. Email: .

Computer Modeling in Engineering & Sciences 2019, 118(1), 111-137.


In order to investigate the mechanical behavior of systems with complex architecture and a large number of contacting bodies, a finite element software, named LiToTac, has been developed by using the object-oriented programming technique. This software, with an interactive graphical user interface, is able to handle highly non-linear problems including multiple contacts and large deformation. More importantly, the contact detection based on a hybrid three-stages methodology can be performed automatically, which is more efficient than the common strategies of pre-defining contact zones in commercial FEM software like ANSYS, ABAQUS, etc. In addition, the contact solver in LiToTac is portable between dynamic and quasi-static codes and can accurately solve contact coupled with friction in a reduced system. Several numerical examples are carried out to illustrate the functionality and capacity of the software package.


Cite This Article

Peng, L., Feng, Z., Joli, P., Renaud, C. (2019). LiToTac: An Interactive-Interface Software for Finite Element Analysis of Multiple Contact Dynamics. CMES-Computer Modeling in Engineering & Sciences, 118(1), 111–137.

This work is licensed under a Creative Commons Attribution 4.0 International License , which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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