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Mechanical Behavior of PE Cylindrical Shells under Axial Impact Load

D. LI, J.L. TAO, Y. PENG, Y. FU

Abstract


Impact response of the pseudo-elastic phase transformation cylindrical shells (PTCS) is systematically investigated experimentally and numerically. Result shows that unloading and recovery process of PTCS is not consistent with the local stress redistribution and concentration. It can be divided into four phases: 1. local stress unloads first in the middle of PTCS; 2. stress continues to unload near the incident bar. 3. Stress continues to unload near the transmission bar, the first and second layer PT buckling rumple disappear; 4. the whole PTCS vibrates elastically. Martensite fraction distribution along the wall thickness of CPTH is the most non-uniformly, that of axial phase transformation hinge takes second place, and that of the phase transformation diagonal hinge is the most uniform.

Keywords


Buckling mode; Single pulse loading; Phase transformation cylindrical shell; Phase transformation hinge; Impact loadingText

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