Modeling Flexural Failure in Carbon-Fiber-Reinforced Polymer Composites

Journal of Composites Science

Seyedhamidreza Alaie¹  Mehran Tehrani²  Thiago de Sousa Burgani² 

[1] Department of Mechanical and Aerospace Engineering, New Mexico State University, Las Cruces, NM 88003, USA;Walker Department of Mechanical Engineering, The University of Texas at Austin, Austin, TX 78712, USA;

关键词: carbon fiber;    fiber-reinforced polymer composite;    flexural strength;    modeling;    failure mode;    finite-element analysis;   

DOI  :  10.3390/jcs6020033

来源: DOAJ

【 摘 要 】

Flexural testing provides a rapid and straightforward assessment of fiber-reinforced composites’ performance. In many high-strength composites, flexural strength is higher than compressive strength. A finite-element model was developed to better understand this improvement in load-bearing capability and to predict the flexural strength of three different carbon-fiber-reinforced polymer composite systems. The model is validated against publicly available experimental data and verified using theory. Different failure criteria are evaluated with respect to their ability to predict the strength of composites under flexural loading. The Tsai–Wu criterion best explains the experimental data. An expansion in compressive stress limit for all three systems was observed and is explained by the compression from the loading roller and Poisson’s effects.

【 授权许可】

Unknown