INVESTIGATION ON THE THERMAL-MECHANICAL RESPONSE DURING THE PROCESS OF TANTALUM ALLOY EFP FORMATION

Wen Jin, Jianwei Jiang, Jianbing Men, Haifeng Li

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

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.

Original languageEnglish
Title of host publicationExterior Ballistics, Explosion Mechanics, Emerging Technologies, Launch Dynamics, Vulnerability and Survivability
EditorsFrederik Coghe
PublisherDEStech Publications
Pages542-551
Number of pages10
ISBN (Electronic)9781605956923
Publication statusPublished - 2023
Event33rd International Symposium on Ballistics, BALLISTICS 2023 - Bruges, Belgium
Duration: 16 Oct 202320 Oct 2023

Publication series

NameProceedings - 33rd International Symposium on Ballistics, BALLISTICS 2023
Volume1

Conference

Conference33rd International Symposium on Ballistics, BALLISTICS 2023
Country/TerritoryBelgium
CityBruges
Period16/10/2320/10/23

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