Computational micromechanics model based failure criteria for chopped carbon fiber sheet molding compound composites

Tang, Haibin; Chen, Zhangxing; Xu, Hongyi; Liu, Zhao; Sun, Qingping; Zhou, Guowei; Yan, Wentao; Han, Weijian; Su, Xuming

doi:10.1016/j.compscitech.2020.108400

Computational micromechanics model based failure criteria for chopped carbon fiber sheet molding compound composites

Journal Article · Sun Aug 23 00:00:00 EDT 2020 · Composites Science and Technology

DOI:https://doi.org/10.1016/j.compscitech.2020.108400· OSTI ID:1848459

^[1]; Chen, Zhangxing ^[2]; Xu, Hongyi ^[3]; Liu, Zhao ^[4]; Sun, Qingping ^[5]; Zhou, Guowei ^[6]; Yan, Wentao ^[7]; Han, Weijian ^[2]; Su, Xuming ^[8]

Nanjing Tech Univ. (China). Key Lab. for Light-weight Materials; National Univ. of Singapore (Singapore). Dept. of Mechanical Engineering; Nanjing Tech Univ. (China)
Nanjing Tech Univ. (China). Key Lab. for Light-weight Materials
Univ. of Connecticut, Storrs, CT (United States)
Shanghai Jiao Tong Univ. (China). School of Design
McMaster Univ., Hamilton, ON (Canada). Dept. of Mechanical Engineering
The Ohio State Univ., Columbus, OH (United States). Dept. of Materials Science and Engineering
National Univ. of Singapore (Singapore). Dept. of Mechanical Engineering
Ford Motor Company, Dearborn, MI (United States)

Chopped carbon fiber sheet molding compound has a great potential in lightweight automotive, marine, and aerospace applications. One of the most challenging tasks is to predict the failure strength of the material due to its anisotropy and heterogeneity, as well as complex stress states in real-world working conditions. In this work, a novel constitutive model of carbon fiber chip is proposed to capture the pre- and post-failure behaviors under different loading modes. On this basis, we propose a new computational micromechanics model, which is calibrated and validated by uniaxial tensile, compressive, and in-plane shear experiments. Furthermore, a set of microstructures representative volume element (RVE) models under complex loading conditions are reconstructed to understand the relationship between the microstructure characteristics and the failure envelopes. Finally, several modified versions of classical failure criteria are proposed for anisotropic materials with consideration of the fiber orientation tensor. The modified Tsai-Wu failure criterion, which shows the best accuracy among all failure criteria, is highlighted in the comparative study.

View Accepted Manuscript (DOE)

Research Organization:: Ford Motor Company, Detroit, MI (United States)

Sponsoring Organization:: National Science Foundation (NSF); USDOE; USDOE Office of Energy Efficiency and Renewable Energy (EERE)

Grant/Contract Number:: EE0006867

OSTI ID:: 1848459

Alternate ID(s):: OSTI ID: 1656657

Journal Information:: Composites Science and Technology, Journal Name: Composites Science and Technology Journal Issue: C Vol. 200; ISSN 0266-3538

Publisher:: ElsevierCopyright Statement

Country of Publication:: United States

Language:: English

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Related Subjects

36 MATERIALS SCIENCE
Chopped carbon fiber
Computational micromechanics
Materials science
Modified Tsai-Wu failure criterion
RVE
Sheet molding compound

Computational micromechanics model based failure criteria for chopped carbon fiber sheet molding compound composites

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