Finite Element Simulation of Mechanical Properties of Core-shell Structured Titanium-nitrogen Alloys

Using the finite element software ABAQUS, two-dimensional models of different core-shell ratios were established. The von-Mises yield criterion was used to describe the yield behaviors of titanium-nickel alloy materials with core-shell network structures, of different core-shell ratios. Tensile and compressive stress-strain curve simulations were performed. The results show that the stress-strain curves obtained by stretching and compression are the same. As the nuclear radius increases from 1 mm to 3 mm(equivalent to the percentage of core), the yield strength of the core-shell network structural material increases. When the strain rate is 3%, the core-shell network structural material undergoes a yielding phenomenon and enters the plastic phase.