›› 2012, Vol. 42 ›› Issue (04): 857-862.

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Simulation of surface coating failure based on continuum damage mechanics

ZHUANG Wei-min, CHEN Yan-hong   

  1. State Key Laboratory of Automotive Simulation and Control, Jilin University, Changchun 130022, China
  • Received:2011-07-12 Online:2012-07-01 Published:2012-07-01

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Abstract: In view of the limitations of traditional macro-mechanics in the surface coating study, the continuum damage mechanics(CDM) was introduced into the finite element analysis of the surface coating. A material model was built based on CDM, and it was embedded in the solver of the software ABAQUS through the user defined subroutine VUMAT of ABAQUS as the interface. A series of numerical simulations were carried out to analyze the mechanical behavior of the coating. By means of the proposed model not only the stress distribution in the coating could be obtained, but also the damage evolution of the coating under loading could be predicted. By studying the relationship between the reaction force and the coating thickness, a concept of a special reaction force corresponding to the crack penetrating the coating thickness was proposed to evaluate the load carrying capacity of the coating. Besides, a critical thickness derived from the relationship between the coating thickness and the crack depth as a reference for coating thickness design.

Key words: solid-state mechanics, mechanical engineering, surface coating, continuum damage mechanics, failure prediction, user-defined material subroutine

CLC Number: 

  • O341
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