Title of article :
Numerical simulation of three-point bending fatigue of four-step 3-D braided rectangular composite under different stress levels from unit-cell approach
Author/Authors :
Sun، نويسنده , , Baozhong and Liu، نويسنده , , Ruiqiang and Gu، نويسنده , , Bohong، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2012
Pages :
8
From page :
239
To page :
246
Abstract :
This paper reports the three-point bending fatigue behavior of 3-D carbon/epoxy braided composite in experimental and finite element analyses (FEAs) approaches. In the experimental approach, the stiffness degradation and maximum deflection curves were obtained to illustrate the relationship between applied stress levels and number of cycles to failure. In FEA approach, a user-defined material subroutine UMAT which characterizes the stiffness matrix and fatigue damage evolution of the 3-D braided composite was developed. It was incorporated with a finite element code ABAQUS/Standard to calculate the stiffness degradation and maximum deflection of the 3-D braided composite during each loading cycle. From the comparisons between experimental and FEA results, good agreements prove the validity of the unit cell model and the subroutine UMAT.
Keywords :
3-D braided composite , Three-point bending fatigue , Stiffness degradation , User-defined materials (UMATs) , Finite element analysis (FEA)
Journal title :
Computational Materials Science
Serial Year :
2012
Journal title :
Computational Materials Science
Record number :
1690050
Link To Document :
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