Simulation of changes in temperature and pressure fields during high speed projectiles forming by explosion
| Autor: | Slobodan Jaramaz, D Milos Markovic, M Olivera Jeremic, P Momcilo Milinovic |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
Materials science
Computer simulation Explosive material Renewable Energy Sustainability and the Environment Projectile lcsh:Mechanical engineering and machinery effective plastic strain Detonation Forming processes explosively formed projectiles Mechanics Propulsion 01 natural sciences temperature and pressure profiles 010305 fluids & plasmas 010406 physical chemistry 0104 chemical sciences Stress (mechanics) numerical simulation 0103 physical sciences Thermal lcsh:TJ1-1570 explosive propulsion |
| Zdroj: | Thermal Science, Vol 20, Iss 5, Pp 1741-1752 (2016) |
| ISSN: | 2334-7163 0354-9836 |
| DOI: | 10.2298/tsci151217073m |
| Popis: | The Research in this paper considered the temperatures fields as the consequently influenced effects appeared by plastic deformation, in the explosively forming process aimed to design Explosively Formed Projectiles (henceforth EFP). As the special payloads of the missiles, used projectiles are packaged as the metal liners, joined with explosive charges, to design explosive propulsion effect. Their final form and velocity during shaping depend on distributed temperatures in explosively driven plastic deformation process. Developed simulation model consider forming process without metal cover of explosive charge, in aim to discover liner’s dynamical correlations of effective plastic strains and temperatures in the unconstrained detonation environment made by payload construction. The temperature fields of the liner’s copper material are considered in time, as the consequence of strain/stress displacements driven by explosion environmental thermodynamically fields of pressures and temperatures. Achieved final velocities and mass loses as the expected EFP performances are estimated regarding their dynamical shaping and thermal gradients behavior vs. effective plastic strains. Performances and parameters are presented vs. process time, numerically simulated by the Autodyne software package. [Projekat Ministarstva nauke Republike Srbije, br. III-47029] |
| Databáze: | OpenAIRE |
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