A 3-D Visco-Hyperelastic Constitutive Model for Rubber with Damage for Finite Element Simulation

• 作者: Ala Tabiei Suraush Khambati
• 来源期刊: 工程与科学中的计算机建模(英文)
• 学科: 数学
• 关键词: HYPERELASTICITY VISCOELASTICITY HYSTERESIS Mullin’s effect RUBBER CONSTITUTIVE
• 年，卷（期）: 2015,（5）
• 页码范围: 25-45
• 页数: 21页
• 分类号: O17

摘要

A constitutive model to describe the behavior of rubber from low to high strain rates is presented.For loading,the primary hyperelastic behavior is characterized by the six parameter Ogden’s strain-energy potential of the third order.The rate-dependence is captured by the nonlinear second order BKZ model using another five parameters,having two relaxation times.For unloading,a single parameter model has been presented to define Hysteresis or continuous damage,while Ogden’s two term model has been used to capture Mullin’s effect or discontinuous damage.Lastly,the Feng-Hallquist failure surface dictates the ultimate failure for element deletion.The proposed model can accurately predict the response of rubber using a limited set of experimental data.The model has been validated here for the case of rubber but can be extended to a wide range of polymers.