The Research Of Constitutive Model Of Foam Rubber Under Dynamic And Quasi-static

Rubber material is a widely used material, which is widely used in automotive, aerospace and other fields, and it is mainly used in vibration damper. Foam rubber material is widely used in the ordinary rubber and the additive decided its unique attributes. Along with the rapid development of shock absorption technology, a new type of rubber damping materia containing pores. Compared with the common material, foam rubber material has stronger damping performance.In practical application, the main task is to determine the performance of the rubber in vibration damper, that is, the stress and strain behavior of the rubber material, especially the dynamic mechanical properties. This requires the first to establish the constitutive relation of the rubber material. In this paper, we mainly study the constitutive relation of foam rubber with density 8003kg/ m under quasi-static and dynamic conditions,In quasi- static environment, rubber material is mainly characterized by hyperelasticity property. Through experiments, this paper determined the foam rubber material of incompressible, determine the hyperelastic model to describe the characteristics of foam rubber. Through uniaxial tensile test, planar tensile test and uniaxial compression experiments under three different deformation stress and strain data, by fitting the parameters and simulation calculation, and ultimately determine the under tension and compression constitutive relationship.In dynamic environment, this paper analyzes the mechanical properties of rubber material, determine the combination of super elastic- viscoelastic modeling concept, SHPB tests under different strain rates, and by numerical fitting and different strain rates under the numerical prediction, confirmed that the super elastic- viscoelastic constitutive model accuracy.