TY - GEN
T1 - INVESTIGATION ON THE THERMAL-MECHANICAL RESPONSE DURING THE PROCESS OF TANTALUM ALLOY EFP FORMATION
AU - Jin, Wen
AU - Jiang, Jianwei
AU - Men, Jianbing
AU - Li, Haifeng
N1 - Publisher Copyright:
© Proceedings - 33rd International Symposium on Ballistics, BALLISTICS 2023. All rights reserved.
PY - 2023
Y1 - 2023
N2 - The formation of Explosively Formed Projectiles (EFPs) is a complex, multi-physical field interaction process, typically characterized by high temperature, strain, and strain rate. The thermal-mechanical response significantly affects the shape of the EFP and can even cause it to fracture. In this study, the nonlinear dynamic simulation software LS-DYNA was used to simulate the formation of a tantalum alloy EFP. The simulation results for temperature were consisted with theoretical calculations based on adiabatic theory. Temperature and strain rate were included as independent variables to simulate the dynamic tensile behavior of tantalum alloy samples. Stress-strain curves of tantalum alloy were obtained under different loading conditions, and the function of temperature, strain, and strain rate was constructed by introducing the Zener-Hollomon parameter. The relationship between the thermal-mechanical response and the EFP's regional distribution was successfully established, providing a solid basis for the structural design of a tantalum alloy liner in future work.
AB - The formation of Explosively Formed Projectiles (EFPs) is a complex, multi-physical field interaction process, typically characterized by high temperature, strain, and strain rate. The thermal-mechanical response significantly affects the shape of the EFP and can even cause it to fracture. In this study, the nonlinear dynamic simulation software LS-DYNA was used to simulate the formation of a tantalum alloy EFP. The simulation results for temperature were consisted with theoretical calculations based on adiabatic theory. Temperature and strain rate were included as independent variables to simulate the dynamic tensile behavior of tantalum alloy samples. Stress-strain curves of tantalum alloy were obtained under different loading conditions, and the function of temperature, strain, and strain rate was constructed by introducing the Zener-Hollomon parameter. The relationship between the thermal-mechanical response and the EFP's regional distribution was successfully established, providing a solid basis for the structural design of a tantalum alloy liner in future work.
UR - http://www.scopus.com/inward/record.url?scp=85178997882&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:85178997882
T3 - Proceedings - 33rd International Symposium on Ballistics, BALLISTICS 2023
SP - 542
EP - 551
BT - Exterior Ballistics, Explosion Mechanics, Emerging Technologies, Launch Dynamics, Vulnerability and Survivability
A2 - Coghe, Frederik
PB - DEStech Publications
T2 - 33rd International Symposium on Ballistics, BALLISTICS 2023
Y2 - 16 October 2023 through 20 October 2023
ER -