Dynamic Responses of TiNi Phase Transformation Cylindrical Shell under Radial Impact Load
In this paper, radial impact responses of TiNi phase transformation cylindrical shell were experimentally studied on two-directional constraint. The nominal load-displacement curve was gained by advanced SHPB; meanwhile, the deformation process of the cylindrical shell was recorded by the high speed camera (30000 fps). The effect of stress wave on the whole structure during load process was as follows: the load-displacement curve fluctuated fiercely and rose gradually in the beginning period, whose frequency was basically the same as that of the stress wave propagation in the Striker 2; After that, the load-displacement curve tended to flat, the shell structure became to be ellipse as the compression increases, and the whole unload process slowed down. Finally, the surface strain was obtained by processing the shell deformation image, and the dynamic effect of the material phase transition and phase transition hinge on the cylindrical shell was examined.
Yi Tan and Dongying Ju
H. J. Zhang et al., "Dynamic Responses of TiNi Phase Transformation Cylindrical Shell under Radial Impact Load", Materials Science Forum, Vols. 675-677, pp. 1155-1158, 2011