Abstract
Dynamic stress intensity factor (DSIF) is analyzed based on two-dimensional (2D) ordinary state-based peridynamics (PD) theory. The equation of motion is formulated by an integral equation, and a body is discretized by a number of particles. An internal force is considered for each particle and the forces interact each other over finite distances. It is considered that the PD theory is a class of meshfree methods. In the present paper, a basic study is carried out for 2D plane stress/strain elastodynamic problems. DSIF is also evaluated for a stationary crack problem based on an equivalent domain integral form of J-integral. A moving least square method is introduced to calculate derivatives of the displacement components for evaluating the stress/strain components and the DSIF. The results are compared with the reference solutions and the path-independent property is critically examined to verify effectiveness of the discretization and DSIF evaluation.
