Developing a visco-hyperelastic material model for 3D finite deformation of elastomers

Fahimi, Shayan; Baghani, Mostafa; Zakerzadeh, Mohammad Reza; Eskandari, A.

doi:10.1016/j.finel.2017.10.009

Cited by 24 publications

(3 citation statements)

References 38 publications

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“…Nevertheless, their complex implementation and the convergence problems when they are used with the finite element method in no simple geometries, make that they are only used for academic purposes and they are not common for industrial sector. Some studies where these models are used are reported in [27,28,54].…”

Section: State Of the Art Reviewmentioning

confidence: 99%

Visco-Hyperelastic Model with Damage for Simulating Cyclic Thermoplastic Elastomers Behavior Applied to an Industrial Component

et al. 2018

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Abstract:In this work a nonlinear phenomenological visco-hyperelastic model including damage consideration is developed to simulate the behavior of Santoprene 101-73 material. This type of elastomeric material is widely used in the automotive and aeronautic sectors, as it has multiple advantages. However, there are still challenges in properly analyzing the mechanical phenomena that these materials exhibit. To simulate this kind of material a lot of theories have been exposed, but none of them have been endorsed unanimously. In this paper, a new model is presented based on the literature, and on experimental data. The test samples were extracted from an air intake duct component of an automotive engine. Inelastic phenomena such as hyperelasticity, viscoelasticity and damage are considered singularly in this model, thus modifying and improving some relevant models found in the literature. Optimization algorithms were used to find out the model parameter values that lead to the best fit of the experimental curves from the tests. An adequate fitting was obtained for the experimental results of a cyclic uniaxial loading of Santoprene 101-73.

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Section: State Of the Art Reviewmentioning

confidence: 99%

Visco-Hyperelastic Model with Damage for Simulating Cyclic Thermoplastic Elastomers Behavior Applied to an Industrial Component

et al. 2018

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“…Research on the overall analysis method and procedure including the behavioral characteristics of rubber using FEM is being carried out in various fields as FEM analysis [ 16 , 17 , 18 ] and pre/post-processing technologies advance. Further, hyper-elastic theory for nonlinear analysis of static large deformation using FEM analysis and design-related research based on theory have been conducted [ 19 , 20 , 21 ].…”

Section: Introductionmentioning

confidence: 99%

Estimation of the Complex Dynamic Stiffness of Inflated Rubber Diaphragms in Pneumatic Springs Using Finite Element Method

Shin

Lee

2020

Sensors

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The accurate modeling of the complex dynamic stiffness of inflated rubber diaphragms in pneumatic springs is necessary for an efficient design of vibration isolation tables for precision instruments, such as optical devices and nano-scale equipment. In addition to pressurized air, rubber diaphragms, essentially employed for the prevention of air leakage, make a significant contribution to the total complex stiffness. To reflect the effect of the dynamic stiffness of the inflated rubber diaphragm on the total complex stiffness during the initial design or design improvement stage, it is desirable to predict the complex stiffness of the inflated rubber diaphragm beforehand. In this paper, an estimation method for the complex stiffness of inflated rubber diaphragms using the commercial finite element method (e.g., ABAQUS) is proposed. The proposed method reflects their dynamic characteristics under the large static deformation by the Mooney–Rivlin and Morman’s constitutive equations. The results of comparison with experimental results indicate that the predictions obtained by the proposed method are congruent with the experimental values of the diaphragm.

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“…1,2 Therefore, there is a pressing need to present a simple, efficient and non-invasive method for material characterization of multi-material bodies. While identification of mechanical properties of single-phase members made of linear elastic materials, [3][4][5] hyper-elastic materials [6][7][8] and hyper-viscoelastic materials 9 is still an active area of research, identification of mechanical properties of different phases of multi-phase hyper-elastic members has become an interesting subject for researchers. Various techniques have been employed to identify the mechanical properties of different phases of multi-material members using elastic and hyper-elastic material models.…”

Section: Introductionmentioning

confidence: 99%

Inverse determination of elastic constants of a hyper-elastic member with inclusions using simple displacement/length measurements

Hajhashemkhani

Hematiyan

Goenezen

2018

The Journal of Strain Analysis for Engineering Design

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There are many engineering parts and natural soft members, which consist of several phases with different mechanical properties. Identification of material parameters of multi-material members is an important issue that has attracted considerable attention. In this article, a finite-element-based inverse method for identification of material parameters of a body made of several hyper-elastic materials is presented. In the presented inverse method, the unknowns are computed using a few simple displacement/length measurements in a few elasto-static experiments. The inverse analysis can be carried out without any full-field measurements. Both plane strain and plane stress conditions are considered. In the plane strain case, displacements of several sampling points on the boundary of the problem domain are used as measured data. In the plane stress case, some characteristic lengths of the member in the deformed configuration are used as measured data. A cost function in terms of the differences between calculated and measured values is defined and the Gauss-Newton method is used to minimize it. The multi-material sensitivity analysis in the optimization process is made by analytical differentiation of the weak form of the problem. Both numerical and experimental studies are made to demonstrate the effectiveness and accuracy of the proposed methods.

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Developing a visco-hyperelastic material model for 3D finite deformation of elastomers

Cited by 24 publications

References 38 publications

Visco-Hyperelastic Model with Damage for Simulating Cyclic Thermoplastic Elastomers Behavior Applied to an Industrial Component

Visco-Hyperelastic Model with Damage for Simulating Cyclic Thermoplastic Elastomers Behavior Applied to an Industrial Component

Estimation of the Complex Dynamic Stiffness of Inflated Rubber Diaphragms in Pneumatic Springs Using Finite Element Method

Inverse determination of elastic constants of a hyper-elastic member with inclusions using simple displacement/length measurements

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