NOSBペリダイナミクスにおける直交異方性弾塑性構成則の検討

抄録

Peridynamics is a particle method with an advantage in fracture simulation of solid bodies. In the fracture simulation, one can easily delete the bonding between the Peridynamics particles to model the fracture if the bonding energy reaches a certain criterion such as a release energy rate. In this research, we have examined the applicability of the Non-Ordinary State-Based Peridynamics in orthotropic elasto-plastic materials. NOSB Peridynamics is a variant of the Peridynamics which allows us to implement any kind of constitutive law to Peridynamics framework. Thorough a unidirectional tensile simulation for a rectangular box, the obtained stress-strain relationship in the elastic limit is compared with the FEM. The results show that examined our Peridynamics code can accurately estimate the stress consistent with the FEM result. Crack propagation under unidirectional tension in orthotropic elastic material was also performed to confirm the validity of the program in fracture simulation.