Browse Publications Technical Papers 2000-05-0029
2000-06-12

Dynamic Behavior of Three Point Bend Specimen Under Impact Load 2000-05-0029

Computer simulations of the mechanical behavior of a three point bend specimen with a quarter notch under impact load are performed. The case with a load application point at the side is considered. An elasto-plastic von Mises material model is chosen. Three phases such as impact, bouncing and bending phases are found to be identified during the period from the moment of impact to the estimated time for crack initiation. It is clearly shown that no plastic deformation near the crack tip is appeared at the impact phase. However, It is confirmed that the plastic zone near the crack tip emerges in the second phase and the plastic hinge has been formed in the third phase. Gap opening displacement, crack tip opening displacement and strain rate are compared with strain rate dependent material (visco-plastic material). The stability during various dynamic load can be seen by using the simulation of this study.

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