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Biaxial Yield Surface Investigation of Polymer-Matrix Composites
Key Laboratory of Ministry of Education for Electronic Equipment Structure Design, Xidian University, Xi'an 710071, China
State Key Laboratory for Manufacturing Systems Engineering, Xi'an Jiaotong University, Xi'an 710049, China
* Author to whom correspondence should be addressed.
Received: 1 March 2013; in revised form: 18 March 2013 / Accepted: 18 March 2013 / Published: 25 March 2013
Abstract: This article presents a numerical technique for computing the biaxial yield surface of polymer-matrix composites with a given microstructure. Generalized Method of Cells in combination with an Improved Bodner-Partom Viscoplastic model is used to compute the inelastic deformation. The validation of presented model is proved by a fiber Bragg gratings (FBGs) strain test system through uniaxial testing under two different strain rate conditions. On this basis, the manufacturing process thermal residual stress and strain rate effect on the biaxial yield surface of composites are considered. The results show that the effect of thermal residual stress on the biaxial yield response is closely dependent on loading conditions. Moreover, biaxial yield strength tends to increase with the increasing strain rate.
Keywords: biaxial yield surface; thermal residual stress; fiber off-axis angle; strain rate
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MDPI and ACS Style
Ye, J.; Qiu, Y.; Zhai, Z.; He, Z. Biaxial Yield Surface Investigation of Polymer-Matrix Composites. Sensors 2013, 13, 4051-4066.
Ye J, Qiu Y, Zhai Z, He Z. Biaxial Yield Surface Investigation of Polymer-Matrix Composites. Sensors. 2013; 13(4):4051-4066.
Ye, Junjie; Qiu, Yuanying; Zhai, Zhi; He, Zhengjia. 2013. "Biaxial Yield Surface Investigation of Polymer-Matrix Composites." Sensors 13, no. 4: 4051-4066.