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Constitutive Model for Rubberlike Materials
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作者 Fuzhang Zhao 《Advances in Pure Mathematics》 2024年第8期633-649,共17页
The isotropic continuum stored energy (CSE) functional, fully combined with the Poisson function, has been applied to constitutively model compressible as well as incompressible rubberlike materials. The isotropic CSE... The isotropic continuum stored energy (CSE) functional, fully combined with the Poisson function, has been applied to constitutively model compressible as well as incompressible rubberlike materials. The isotropic CSE constitutive model fits uniaxial tension test and predicts unfitted pure shear and equibiaxial tension tests of incompressible S4035A thermoplastic elastomer (TPE). Furthermore, the isotropic CSE model along with the Poisson function fits uniaxial tension test along with the kinematic relation test and predicts unfitted pure shear and equibiaxial tension tests along with the corresponding kinematic relation tests of a compressible synthetic rubber. The detailed procedures for uniquely identifying constitutive parameters are emphasized, the experimental characterization results are discussed, and the principles for constitutive models are summarized and augmented. 展开更多
关键词 Compressible Finite Elasticity Constitutive Modeling Isotropic CSE Functional Poisson Function rubberlike Materials
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A multiaxial elastic potential with error-minimizing approximation to rubberlike elasticity 被引量:1
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作者 Zhi-Xiang Gu Lu Yuan +1 位作者 Zheng-Nan Yin Heng Xiao 《Acta Mechanica Sinica》 SCIE EI CAS CSCD 2015年第5期637-646,共10页
This study is concerned with a new,explicit approach by means of which forms of the large strain elastic potential for multiaxial rubberlike elasticity may be obtained based on data for a single deformation mode.As a ... This study is concerned with a new,explicit approach by means of which forms of the large strain elastic potential for multiaxial rubberlike elasticity may be obtained based on data for a single deformation mode.As a departure from usual studies,here for the first time errors may be estimated and rendered minimal for all possible deformation modes and,furthermore,failure behavior may be incorporated.Numerical examples presented are in accurate agreement with Treloar's well-known data. 展开更多
关键词 rubberlike elasticity Large deformations Elastic potential Explicit approach Minimized errors
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Multi-axial strain-stiffening elastic potentials with energy bounds:explicit approach based on uniaxial data
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作者 Lidan YU Tianfu JIN +1 位作者 Zhengnan YIN Heng XIAO 《Applied Mathematics and Mechanics(English Edition)》 SCIE EI CSCD 2015年第7期883-894,共12页
According to the well-known models for rubberlike elasticity with strain- stii^ening effects, the unbounded strain energy is generated with the unlimitedly growing stress when the stretch approaches certain limits. To... According to the well-known models for rubberlike elasticity with strain- stii^ening effects, the unbounded strain energy is generated with the unlimitedly growing stress when the stretch approaches certain limits. Toward a solution to this issue, an explicit approach is proposed to derive the multi-axial elastic potentials directly from the uniaxial potentials. Then, a new multi-axial potential is presented to characterize the strain-stiffening effect by prescribing suitable forms of uniaxia] potentials so that the strain energy is always bounded as the stress grows to infinity. Numerical examples show good agreement with a number of test data. 展开更多
关键词 rubberlike elasticity strain limit strain-stiffening effect energy bound uniaxial data multi-axial potential
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