A hyperelastic constitutive model for rubber-like materials

Khajehsaeid, H.; Arghavani, J.; Naghdabadi, R.

doi:10.1016/j.euromechsol.2012.09.010

Cited by 163 publications

(79 citation statements)

References 38 publications

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“…The selection of suitable SEF depends on its application, corresponding variables and available data for material parameter identification 5 . Chagnon et al 6 described four main qualities of an efficient hyperelastic material model as follows:…”

Section: Introductionmentioning

confidence: 99%

Mechanical Characterization and FE Modelling of a Hyperelastic Material

et al. 2015

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Section: Introductionmentioning

confidence: 99%

Mechanical Characterization and FE Modelling of a Hyperelastic Material

et al. 2015

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“…The stress distribution on the artery for the two models is shown in Figure 9b, and the stress level was higher for polynomial model (0.79 MPa) due to more severe deformation. The importance of the second stretch invariant (I 2 ) has been discussed in Horgan and Smayda (2012) and Khajehsaeid et al (2013). It was reported that the strain-energy potential with the absence of I 2 is unable to capture some significant physical effects such as simple shear, strain stiffening at large stretches and torsion of a circular cylinder.…”

Section: Effect Of Artery Constitutive Models Second Stretch Invarianmentioning

confidence: 99%

A study of balloon type, system constraint and artery constitutive model used in finite element simulation of stent deployment

Schiavone

Zhao

2015

Mech Adv Mater Mod Process

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Background: Finite element is an effective tool to simulate stent expansion inside stenotic arteries, which provides an insightful understanding of the biomechanical behaviour of the whole stent-artery system during the procedure. The choice of balloon type, system constraint and artery constitutive model plays an important role in finite element simulation of stent deployment. Methods: Commercial finite element package ABAQUS was used to model the expansion of Xience stent inside a diseased artery with 40% stenosis. The arterial wall, consisting of intima, media and adventitia layers, and the stenotic plaque were described by different hyperelastic models. Both folded and rubber balloons were considered and inflated with a linearly increasing pressure of 1.4 MPa. Simulations were also carried out by considering free, partially and fully constrained arteries. Results: Folded balloon produces sustained stent expansion under a lower pressure when compared to rubber balloon, leading to increased stress level and enhanced final expansion for the system. Fully constrained artery reduces the stent expansion when compared to free and partially constrained arteries, due to the increased recoiling effect. Stress in the artery-plaque system has higher magnitude for stent expansion in a free artery due to more severe stretch. Calcified plaque limits stent expansion considerably when compared to hypocellular plaque. The negligence of the second stretch invariant in the strain energy potential leads to the disappearance of saturation behaviour during stent expansion. The use of anisotropic artery model reduces the system expansion at peak pressure when compared to the isotropic model, but with an increased final diameter due to reduced recoiling effect. The stress distribution in the artery-plaque system is also different for different combinations of artery and plaque constitutive models. Conclusions: Folded balloon should be used in the simulation of stent deployment, with the artery partially constrained using spring elements with a proper stiffness constant. The blood vessel should be modelled as a three-layer structure using a hyperelastic potential that considers both the first and second stretch invariants as well as the anisotropy. The composition of the plaque also has to be considered due to its major effect on stent deployment.

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“…The selection of a suitable SEF of rubber material depends on its application, corresponding parameters, and available material test data [20]. Several criteria are found in previous researches to define the proper SEF of rubber material, i.e.…”

Section: Introductionmentioning

confidence: 99%

FE Model of Low Grade Rubber for Modeling Housing’s Low-Cost Rubber Base Isolators

2018

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An accurate selection of strain energy function (SEF) plays a very important role for predicting the actual behavior of rubber material in the finite element analysis (FEA). The common method for selecting the SEF is by using the curve fitting procedure. However, the behavior of some typical rubbers, such as low grade rubbers (average hardness value of 47.2), cannot be predicted well by only using the curve fitting procedure. To accurately predict the actual behavior of such specifically nearly incompressible material, a series of FEA were carried out to simulate the actual behavior of four physical testing materials, namely the uniaxial, the planar shear, the equibiaxial, and the volumetric tests. This FEA is intended to examine the most suitable constitutive model in representing the rubber characteristics and behavior. From the comparisons, it can be concluded that the Ogden model provides a reasonably accurate prediction compared to the remaining investigated constitutive material models. Finally, the appropriate SEF, i.e. the Ogden model, was adopted for modeling a low-cost rubber base isolator (LCRBI) in the finite element analysis (FEA). The simple uniaxial compression test of the LCRBI is required for validating that the selected SEF works for predicting the actual behavior of LCRBI.

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A hyperelastic constitutive model for rubber-like materials

Cited by 163 publications

References 38 publications

Mechanical Characterization and FE Modelling of a Hyperelastic Material

Mechanical Characterization and FE Modelling of a Hyperelastic Material

A study of balloon type, system constraint and artery constitutive model used in finite element simulation of stent deployment

FE Model of Low Grade Rubber for Modeling Housing’s Low-Cost Rubber Base Isolators

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