Rubber material viscous and superelastic constitutive model building method considering correlation effect

A rubber material, constitutive model technology, applied in special data processing applications, instruments, design optimization/simulation, etc., can solve problems such as mechanical characterization

Inactive Publication Date: 2016-12-07
NANJING UNIV OF SCI & TECH
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Problems solved by technology

[0003] The object of the present invention is to provide a kind of modeling method of the rubber material visco-hyperelastic constitutive model that considers correlation effect, aim at the research of rubber material tensile mechanical properties, set u

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  • Rubber material viscous and superelastic constitutive model building method considering correlation effect
  • Rubber material viscous and superelastic constitutive model building method considering correlation effect
  • Rubber material viscous and superelastic constitutive model building method considering correlation effect

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[0070] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0071] Principle of the present invention is as follows:

[0072] The visco-hyperelastic constitutive model of rubber materials is established, and the self-built quasi-static uniaxial tensile test device and the separate Hopkinson tensile test device (SHTB) are used to verify it experimentally, which provides a basis for the research on the tensile mechanical properties of rubber materials. refer to. First, in order to make the constitutive model have the characteristics of large predicted strain range, few parameters and clear physical meaning, the hyperelastic constitutive model and the viscoelastic constitutive model were combined to establish a viscohyperelastic constitutive model for rubber materials; secondly, The common Instron testing machine has problems such as clamping difficulty and too large measuring range when testing small-sized specimens. A...

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Abstract

The invention discloses a rubber material viscous and superelastic constitutive model building method considering a correlation effect. The method comprises the following steps of obtaining stress-strain of a rubber material through quasi-static uniaxial tension experiment; performing impact uniaxial tension experiment through an SHTB (split hopkinson tension bar) device to obtain the stress-strain of the rubber material at a high strain rate; obtaining corresponding response rules and deformation characteristics according to the stress-strain, obtained through the quasi-static uniaxial tension experiment and the impact uniaxial tension experiment, of the rubber material; building a viscous and superelastic constitutive model of the rubber material. The method has the advantages that by aiming at the study on the tensile mechanical property of the rubber material, the viscous and superelastic constitutive model of the rubber material is built; reference is provided for the study on the tensile mechanical property of the rubber material; the problem of mechanical characterization difficulty of the rubber material at different strain rates is solved.

Description

technical field [0001] The invention belongs to the technical field of research on tensile mechanical properties of rubber materials, and in particular relates to a modeling method of a visco-hyperelastic constitutive model of rubber materials considering correlation effects. Background technique [0002] The constitutive study of rubber materials should include hyperelasticity and viscoelasticity. At present, the research on the tensile mechanical properties of rubber is often limited to hyperelasticity, and the limited research on rubber rate-dependent constitutive models is to combine hyperelastic constitutive models and viscoelastic constitutive models, such as H.Pouriayevali et al. The constitutive equation is expressed in a form independent of the coordinate system, and a constitutive model describing the viscohyperelasticity of rubber materials is proposed. However, due to the introduction of polynomials composed of strain invariants in the modeling process, there are...

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Application Information

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IPC IPC(8): G06F17/50
CPCG06F30/20
Inventor 李亚仲健林任杰姚琳王泽林
Owner NANJING UNIV OF SCI & TECH
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