TY - JOUR
T1 - A constitutive model for elastoplastic-damage coupling effect of unidirectional fiber-reinforced polymer matrix composites
AU - Chen, Yanfei
AU - Zhao, Yunong
AU - Ai, Shigang
AU - He, Chunwang
AU - Tao, Yong
AU - Yang, Yazheng
AU - Fang, Daining
N1 - Publisher Copyright:
© 2019 Elsevier Ltd
PY - 2020/3
Y1 - 2020/3
N2 - In this paper, an elastoplastic-damage coupling constitutive model for unidirectional fiber-reinforced polymer matrix composites (UD FRPs) is presented, which both considers the plastic-hardening and damage-softening processes. Tension-compression asymmetry and shear strength increase due to transverse compression are observed under off-axis tensile/compressive tests of UD E-glass/YPH-200. Therefore, a four-parameter plastic yield criterion considering these two effects is proposed. Applying this model to predict the off-axis tensile/compressive responses of present tests provides good agreement with experimental curves. In addition, we give a novel definition of shear damage variable based on Puck failure theory and discuss it in detail. Further, we develop a four-parameter matrix failure criterion for UD FRPs and exactly predict the off-axis failure strength.
AB - In this paper, an elastoplastic-damage coupling constitutive model for unidirectional fiber-reinforced polymer matrix composites (UD FRPs) is presented, which both considers the plastic-hardening and damage-softening processes. Tension-compression asymmetry and shear strength increase due to transverse compression are observed under off-axis tensile/compressive tests of UD E-glass/YPH-200. Therefore, a four-parameter plastic yield criterion considering these two effects is proposed. Applying this model to predict the off-axis tensile/compressive responses of present tests provides good agreement with experimental curves. In addition, we give a novel definition of shear damage variable based on Puck failure theory and discuss it in detail. Further, we develop a four-parameter matrix failure criterion for UD FRPs and exactly predict the off-axis failure strength.
KW - Constitutive model
KW - Elastoplastic-damage coupling
KW - Fiber-reinforced polymer matrix composites
UR - http://www.scopus.com/inward/record.url?scp=85077491578&partnerID=8YFLogxK
U2 - 10.1016/j.compositesa.2019.105736
DO - 10.1016/j.compositesa.2019.105736
M3 - Article
AN - SCOPUS:85077491578
SN - 1359-835X
VL - 130
JO - Composites Part A: Applied Science and Manufacturing
JF - Composites Part A: Applied Science and Manufacturing
M1 - 105736
ER -