A Nonorthogonal Constitutive Model for Woven Composites Involving Biaxial Tension Coupling

ZHANG Bi-chao; PENG Xiong-qi; HUANG Xiao-shuang

doi:10.3879/j.issn.1000-0887.2016.03.001

Volume 37 Issue 3

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ZHANG Bi-chao, PENG Xiong-qi, HUANG Xiao-shuang. A Nonorthogonal Constitutive Model for Woven Composites Involving Biaxial Tension Coupling[J]. Applied Mathematics and Mechanics, 2016, 37(3): 227-234. doi: 10.3879/j.issn.1000-0887.2016.03.001

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A Nonorthogonal Constitutive Model for Woven Composites Involving Biaxial Tension Coupling

doi: 10.3879/j.issn.1000-0887.2016.03.001

School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200030, P.R.China

Funds: The National Natural Science Foundation of China(11172171)

Received Date: 2015-11-17
Rev Recd Date: 2015-12-01
Publish Date: 2016-03-15

Abstract

Abstract

Based on the continuum mechanics theory, a nonorthogonal constitutive model for woven composites involving biaxial tension coupling was developed. The biaxial tension coupling effects of the composite fabric were introduced into a previously built nonorthogonal constitutive model, and the method to identify the material parameters in the constitutive model was provided. In the fitting of experimental data from the uniaxial tensile test, the biaxial tensile test at different stretch ratios and the bias extension test, the model parameters were obtained. The present model was validated through comparison between the numerical results and the experimental data out of a biaxial tensile test and a doubledome stamping test, which indicated that the model was reliable to characterize the highly nonlinear and strongly anisotropic mechanical behaviors of the composite fabric in large deformation. The new model has the merits of accurate results and easy determination of material parameters, making a theoretical foundation for the numerical simulation and optimization of the woven composite forming process in the future.
- woven composite,
- biaxial tension coupling,
- nonorthogonal model,
- forming,
- finite element analysis

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References(19)

References

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