[期刊论文] 王庆涛,田强,胡海岩,Contact dynamics of elasto-plastic thin beams simulated via absolute nodal coordinate formulation, Acta Mechanica Sinica, 2016, 32(3): 525-534

发布者:孙加亮发布时间:2020-04-27浏览次数:395

Contact dynamics of elasto-plastic thin beams simulated 

via absolute nodal coordinate formulation

Qingtao Wang, Qiang Tian, Haiyan Hu

 

Abstract: Under the frame of multibody dynamics, the contact dynamics of elasto-plastic spatial thin beams is numerically studied by using the spatial thin beam elements of Absolute Nodal Coordinate Formulation (ANCF). The internal force of the elasto-plastic spatial thin beam element is derived under the assumption that the plastic strain of the beam element depends only on its longitudinal deformation. A new body-fixed local coordinate system is introduced into the spatial thin beam element of ANCF for efficient contact detection in the contact dynamics simulation. The linear isotropic hardening constitutive law is used to describe the elasto-plastic deformation of beam material, and the classical return mapping algorithm is adopted to evaluate the plastic strains. A multi-zone contact approach of thin beams previously proposed by the authors is also introduced to detect the multiple contact zones of beams accurately and the penalty method is used to compute the normal contact force of contacting thin beams. Four numerical examples are given to demonstrate the applicability and effectiveness of the proposed elasto-plastic spatial thin beam element of ANCF to flexible multibody system dynamics.

 

原文链接: https://link.springer.com/article/10.1007/s10409-015-0533-3