TY - JOUR
T1 - Initial and final failure strength analysis of composites based on a micromechanical method
AU - Ye, Junjie
AU - Qiu, Yuanying
AU - Chen, Xuefeng
AU - Ma, Juan
N1 - Publisher Copyright:
© 2015 Elsevier Ltd.
PY - 2015/7/1
Y1 - 2015/7/1
N2 - In this paper, a micromechanical model for investigating initial and final failure surface of fiber-reinforced composites laminate is established. The Generalized Method of Cells, which effectively predicts the thermal stresses influence on stress-strain behaviors of fiber-reinforced composites, is combined with Von-Mises yield criterion to describe nonlinear stress-strain behaviors of composites laminate. The Tsai-Hill criterion is incorporated into the model for predicting failure strength of lamina and typical laminate in uniaxial tension and biaxial loading, respectively. The numerical simulations based on a micromechanical method are performed to study the effects of thermal residual stresses on initial and final failure strength. Results revealed that thermal residual stresses influence on failure strength of the UD lamina is closely dependent on fiber off-axis angles. The contribution of thermal residual stresses in the final failure surface of [0°/±30°/90°]2 laminate and [90°/±45°/0°]2 laminate can be ignored. The results in longitudinal for lamina and biaxial tensile loadings for [90°/±45°/0°]2 laminate show good agreement with the experimental data.
AB - In this paper, a micromechanical model for investigating initial and final failure surface of fiber-reinforced composites laminate is established. The Generalized Method of Cells, which effectively predicts the thermal stresses influence on stress-strain behaviors of fiber-reinforced composites, is combined with Von-Mises yield criterion to describe nonlinear stress-strain behaviors of composites laminate. The Tsai-Hill criterion is incorporated into the model for predicting failure strength of lamina and typical laminate in uniaxial tension and biaxial loading, respectively. The numerical simulations based on a micromechanical method are performed to study the effects of thermal residual stresses on initial and final failure strength. Results revealed that thermal residual stresses influence on failure strength of the UD lamina is closely dependent on fiber off-axis angles. The contribution of thermal residual stresses in the final failure surface of [0°/±30°/90°]2 laminate and [90°/±45°/0°]2 laminate can be ignored. The results in longitudinal for lamina and biaxial tensile loadings for [90°/±45°/0°]2 laminate show good agreement with the experimental data.
KW - Fiber off-axis angle
KW - Initial and final failure strength
KW - Micromechanics
KW - Thermal residual stresses
UR - https://www.scopus.com/pages/publications/84923361922
U2 - 10.1016/j.compstruct.2015.02.030
DO - 10.1016/j.compstruct.2015.02.030
M3 - 文章
AN - SCOPUS:84923361922
SN - 0263-8223
VL - 125
SP - 328
EP - 335
JO - Composite Structures
JF - Composite Structures
ER -