Journal of Shanghai Jiaotong University ›› 2017, Vol. 51 ›› Issue (9): 1025-1030.doi: 10.16183/j.cnki.jsjtu.2017.09.001

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A TemperatureDependent Hyperelastic Constitutive

WANG Lidong1,WEI Ran2,XU Peng2,ZHAO Kexin2,PENG Xiongqi1   

  • Online:2017-09-20 Published:2017-09-20
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Abstract: Uniaxial tensile tests under different temperatures were implemented to obtain the basic mechanical property of diaphragm in hot diaphragm preforming of composites. Based on the hyperelastic theory of continuum mechanics and the principle of virtual work, a constitutive model which considered the influence of the temperature under 90℃ was developed to characterize the large deformation behavior of diaphragm. Material parameters were attained by fitting experimental data. The stability of the model was analyzed and then the constitutive model was implemented in Abaqus through the user material subroutine UHYPER. The developed constitutive model was applied to simulate uniaxial tensile and draping of diaphragm over mold. Numerical results were compared with experimental data as a means of model validation. The results show that the simulation results are in good agreement with the experimental results, which verifies the accuracy of the proposed constitutive model.

Key words:  hot diaphragm forming, diaphragm, hyperelastic constitutive model, temperature, composites

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