New numerical method for mechanics of continuous media

  • Karol Jach Military University of Technology
  • Maciej Mroczkowski Military University of Technology
  • Robert Świerczyński Military University of Technology
  • Edward Włodarczyk Military University of Technology
  • Piotr Wolański Warsaw University of Technology

Abstract

A new, original numerical method of free particles, for mechanics of continuous media, has been developed. The free particle hydrocodes (HEFP), based on this method, are the powerful tools that can be used to simulate, in the sense of computational physics, events with very high dynamic effects. In the paper, computational simulation of several attractive and practically important problems like: processes of the detonation, high velocity impacts and hypervelocity planetary impacts, shaped charge jet formation, explosive forming of projectiles, penetrating of the armour plate, is posed. All of them include shocks, very large deformations of solids, processes of cratering with impact jets generation and targets penetration . The method of free particles is a very useful for magnetohydrodynamical (MHD) simulation, too. It is possible to simulate ideal MHD and non-ideal MHD processes, and such exemplary results are also presented. In the paper, physical, mathematical and numerical models as well as results of some complex, unsteady, spatially two-dimensional simulations are presented.

Keywords

References

[1] K. Jach. Numerical modelling of two-dimensional elastic/visco-plastic deformation of materials at dynamic loads. In: Proc . 11-th AIRAPT Int. Conf., 4 : 198-200, Kiev, 1987.
[2] K. Jach. Cislennoe modelirovane javlenii klassiceskoy i obratnoy kumulacii. Zurnal prikladnoy mekhaniki i tekhniceskoy fiziki, 2: 123-129, 1987.
[3] K. Jach. Computer modelling of a shaped charge action. WAT, Warszawa, 1990 (in Polish) .
[4] K. Jach, E. Włodarczyk. Computer modelling of the target penetration process. J. Tech. Phys., 32, 1, 1991.
[5] K. Jach, M. Mroczkowski, W. Stępniewski. Ideal and non-ideal MHD simulations of the M = 0 mode instability development. J. Tech. Phys., 32, 1, 1991.
Published
Jul 18, 2023
How to Cite
JACH, Karol et al. New numerical method for mechanics of continuous media. Computer Assisted Methods in Engineering and Science, [S.l.], v. 2, n. 2, p. 105-128, july 2023. ISSN 2956-5839. Available at: <https://cames.ippt.pan.pl/index.php/cames/article/view/1480>. Date accessed: 25 nov. 2024.
Section
Articles