Rubber dynamic heat generation calculation method and device

Abstract

The invention provides a rubber dynamic heat generation calculation method and device. The method comprises steps of testing the corresponding stress of a rubber macromolecule in a relaxed state undera preset strain, and fitting the preset strain and the corresponding stress to determine the parameters of a hyperelastic constitutive model; obtaining an energy storage modulus and a loss modulus, and fitting the energy storage modulus and the loss modulus to determine viscoelastic mechanical model parameters; establishing a rubber viscoelasticity finite element mechanical thermal coupling modelaccording to the hyperelastic constitutive model parameters and the viscoelasticity mechanical model parameters; and calculating the dynamic heat generation temperature of the rubber according to theviscoelastic finite element mechanical thermal coupling model of the rubber. According to the method, the dynamic heat generation temperature of the rubber is calculated by establishing the rubber viscoelasticity finite element mechanical thermal coupling model, and the temperature field information of the rubber product in dynamic use is accurately predicted, so that the service life of the rubber is accurately predicted.

Description

technical field [0001] The invention relates to the technical field of rubber materials, in particular to a rubber dynamic heat generation calculation and device. Background technique [0002] At present, many rubber products such as tires, crawlers, and transmission belts are often deformed repeatedly under a certain strain and frequency. Long-term dynamic reciprocating deformation will cause local high temperature of rubber products and cause damage, aging and other problems, resulting in shortened service life of rubber products. The viscoelasticity of rubber is the main reason for its heat generation. This viscous loss is related to the internal friction between molecular chains or between the filler network and molecular chains under alternating loads, and is converted into heat to increase its temperature. Therefore, accurately predicting the temperature field information under the dynamic use of rubber products, so as to accurately predict the service life of rubber h...

AI Technical Summary

Problems solved by technology

[0002] At present, many rubber products such as tires, crawlers, and transmission belts are often deformed repeatedly under a certain strain and frequency. Long-term dynamic reciprocating deformation will cause local high temperature of rubber products and cause damage, aging and other problems, resulting in shortened service life of rubber products.

Images