TY - GEN
T1 - An adaptive EFG-FE computational model for thermal elasto-plastic frictional contact problems
AU - Zhang, Zheng
AU - Liu, Geng
AU - Liu, Tianxiang
PY - 2008
Y1 - 2008
N2 - An adaptive meshless element-free Galerkin-finite element (EFG-FE) coupling model for thermal elasto-plastic contact problems is developed to investigate the influences of the steady-state frictional heating on the contact performance of two contacting bodies. The thermal elasto-plastic contact problems using the initial stiffness method is presented. The local adaptive refinement strategy and the strain energy gradient-based error estimation for EFG-FE coupling method are combined. The adaptive meshless model takes into account the temperature variation, micro plastic flow, and the coupled thermo-elasto-plastic behavior of the materials, considering the strain-hardening property of the materials and temperature-dependent yield strength. The adaptive model is verified through the contact analysis of a cylinder with an elasto-plastic plane. The thermal effects on the contact pressure, stresses distributions with certain frictional heat inputs are studied. The results show that the accuracy of the solutions from the adaptive refinement model is satisfactory but the cost of the CPU time is much less than that for the uniform refinement calculation.
AB - An adaptive meshless element-free Galerkin-finite element (EFG-FE) coupling model for thermal elasto-plastic contact problems is developed to investigate the influences of the steady-state frictional heating on the contact performance of two contacting bodies. The thermal elasto-plastic contact problems using the initial stiffness method is presented. The local adaptive refinement strategy and the strain energy gradient-based error estimation for EFG-FE coupling method are combined. The adaptive meshless model takes into account the temperature variation, micro plastic flow, and the coupled thermo-elasto-plastic behavior of the materials, considering the strain-hardening property of the materials and temperature-dependent yield strength. The adaptive model is verified through the contact analysis of a cylinder with an elasto-plastic plane. The thermal effects on the contact pressure, stresses distributions with certain frictional heat inputs are studied. The results show that the accuracy of the solutions from the adaptive refinement model is satisfactory but the cost of the CPU time is much less than that for the uniform refinement calculation.
KW - Adaptive EFG-FE method
KW - Temperature-dependent yield strength
KW - Thermal elasto-plastic contact
UR - http://www.scopus.com/inward/record.url?scp=45749102117&partnerID=8YFLogxK
U2 - 10.4028/www.scientific.net/amr.33-37.821
DO - 10.4028/www.scientific.net/amr.33-37.821
M3 - 会议稿件
AN - SCOPUS:45749102117
SN - 0878493999
SN - 9780878493999
T3 - Advanced Materials Research
SP - 821
EP - 826
BT - Advances in Fracture and Materials Behavior - Selected, peer reviewed papers of the Seventh International Conference on Fracture and Strength of Solids (FEOFS2007)
PB - Trans Tech Publications
T2 - 7th International Conference on Fracture and Strength of Solids, FEOFS 2007
Y2 - 27 August 2007 through 29 August 2007
ER -