Compressive behavior of Sulcata Tortoise's carapace at high rate of deformation

8th TSME-International Conference on Mechanical Engineering

Jongpairojcosit, Nadda^1,2 ; Glunrawd, Chinnawit^1 ; Jearanaisilawong, Petch^1

Department of Mechanical and Aerospace Engineering, Faculty of Engineering King Mongkut's, University of Technology North Bangkok, 1518 Pracharat 1 Rd, Wongsawang, Bangsue, Bangkok

10800, Thailand^1

Defence Technology Institute (Public Organization), Ministry of Defence Office of the Permanent Secretary of Defence (Chaengwattana), 47/433 Moo 3, Ban Mai, Pak Kret, Nonthaburi

11120, Thailand^2

关键词: Compressive behavior;    Compressive moduli;    Compressive response;    Constant rate;    Disk specimens;    Incident waves;    Split hopkinson pressure bar techniques;    Transmission bars;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/297/1/012015/pdf
DOI  :  10.1088/1757-899X/297/1/012015

来源: IOP

【 摘 要 】

This paper presents the dynamic compressive response of tortoise carapace at high rate of deformation. Disk specimens are cut from carapace and compressed using Split-Hopkinson Pressure Bar (SHPB) technique. The steel bar system together with a copper pulse shaper generate an incident wave that can achieve a constant rate of deformation within the specimens. The results show increasing compressive modulus and compressive strength compared to the quasi-static data of carapace. The strain waves on the incident and the transmission bars from finite element analysis based on the experimental setup agree with the test data.