Hencky's model for elastomer forming process

10th International Conference and Workshop on Numerical Simulation of 3D Sheet Metal Forming Processes

Oleinikov, A.A.^1 ; Oleinikov, A.I.^2,3

Faculty of Informational Technologies, Mathematics and Physics, Amur State University of Humanities and Pedagogy, Komsomolsk-na-Amure

681000, Russia^1

Research and Technology Center, Central Aerohydrodynamic Institute, Zhukovsky

MR

140180, Russia^2

Department of Aeromechanics and Flight Engineering, Moscow Institute of Physics and Technology, Zhukovsky

MR

140180, Russia^3

关键词: Accurate prediction;    Constitutive relations;    Elasticity tensor;    Fitting curves;    Hyperelastic material models;    Isotropic materials;    Material modeling;    Polyurethane elastomers;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/734/3/032003/pdf
DOI  :  10.1088/1742-6596/734/3/032003

来源: IOP

【 摘 要 】

In the numerical simulation of elastomer forming process, Henckys isotropic hyperelastic material model can guarantee relatively accurate prediction of strain range in terms of large deformations. It is shown, that this material model prolongate Hooke's law from the area of infinitesimal strains to the area of moderate ones. New representation of the fourth-order elasticity tensor for Hencky's hyperelastic isotropic material is obtained, it possesses both minor symmetries, and the major symmetry. Constitutive relations of considered model is implemented into MSC.Marc code. By calculating and fitting curves, the polyurethane elastomer material constants are selected. Simulation of equipment for elastomer sheet forming are considered.