Host: The Japan Society of Mechanical Engineers
Name : [in Japanese]
Date : September 16, 2019 - September 18, 2019
When a material defect (initial crack) exists near high speed collision point, fracture resulting from the initial crack shows complicated crack propagation behavior shows dependency on the condition of the collision. In this research, the collision fracture phenomenon is observed using a high-speed camera, and the experimental results like the geometrical conditions, the start time of crack propagation, the crack propagation direction, and the crack propagation rate are recorded, the numerical simulation to model the crack propagation phenomenon is conducted. Base on the results of the numerical simulation, we examined the stress distribution and transition of fracture mechanics parameters, the application of contact - non-contact condition between specimen and strikers is discussed.
