Constitutive Fitting and Simulation of Quasi Static Tensile Viscoelastic Behavior of Resin Materials
The tensile tests at room temperature were carried out by electronic universal testing machine.The mechanical behav-ior of resin under quasi-static tension was studied at strain rates of 0.000667s-1、0.003333s-1 and 0.005333s-1.The results showed that the tensile mechanical properties of resin material(resin mass∶curing agent mass = 3.7∶1)were rate dependent at low strain rate,and the stress increased with the increase of strain rate.SEM analysis showed that with the increase of strain rate,the brittle fracture morphology became more and more obvious.The generalized nonlinear ZWT(Zhu-Wang-Tang)constitutive model was used to describe the tensile mechanical behavior of resin under low strain,and the one-dimensional and three-dimensional constitutive parameters were obtained by fitting the experimental data.The quasi-static tensile tests under different strain rates were simulated by using Abaqus software,and the simulation results were in good agreement with the test results.
ResinCuring AgentQuasi Static TensileStrain RateConstitutive Model
NETL
NSTL
万方数据
维普
