Fig.1 Schematic of specimen for quasi static single axis tensile tests Engineering stress strain curve was got by the load-displacement curve. Parameters of the maximum principal stress, the maximum principal strain, equivalent plastic strain and Johnson–Cook fracture models were got by Stress triaxial degree test and tensile test at high temperature. Fig.1 quasi static single axis tensile test Fig.2 stress-strain curve of Q235 3. The numerical simulation model and the strength model 3.1 The numerical simulation model Generally, in the Taylor test a deformable flat-nosed cylinder is fired against a fixed rigid wall (see Fig. 3). The cylindrical projectile is of the diameter d= 6mm and the length l= 30mm. The friction coefficient between the front surface of the projectile and the rigid wall is assumed to be 0.1 μ= . Smoothed Particle Hydrodynamics method (SPH) was used to simulate the failure phenomena of cylinder. A 3-D solid finite element model was built rather than an axisymmetric model (see Fig. 4).
RkJQdWJsaXNoZXIy MjM0NDE=