Autor: Janiszewski, K. - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: The influence of non-axisymmetric pulse shaper position on SHPB experimental data
Autorzy:: Panowicz, R.
Janiszewski, J.
Kochanowski, K.
Powiązania:: https://bibliotekanauki.pl/articles/280350.pdf
Data publikacji:: 2018
Wydawca:: Polskie Towarzystwo Mechaniki Teoretycznej i Stosowanej
Tematy:: split Hopkinson pressure bar
pulse shaping technology
high-strain-rate testing
Opis:: The results of experimental and numerical analysis of the influence of the non-axisymmetric pulse shaper position on recorded wave signals in the split Hopkinson pressure bar experiment are presented. The paper focuses attention on the problem of wave signal disturbances caused by a bending wave resulting from non-axisymmetric pulse shaper positions and, moreover, different shaper thickness, striker impact velocities and Wheatstone bridge configurations. The obtained results of analyses indicate that the effect of the non-axisymmetric pulse shaper position may be neglected if deviation from the bar axis does not exceed 20%.
Źródło:: Journal of Theoretical and Applied Mechanics; 2018, 56, 3; 873-886
1429-2955
Pojawia się w:: Journal of Theoretical and Applied Mechanics
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 2.

Tytuł:: Influence of pulse shaper geometry on wave pulses in shpb experiments
Autorzy:: Panowicz, R.
Janiszewski, J.
Kochanowski, K.
Powiązania:: https://bibliotekanauki.pl/articles/280700.pdf
Data publikacji:: 2018
Wydawca:: Polskie Towarzystwo Mechaniki Teoretycznej i Stosowanej
Tematy:: SHPB
pulse shaping technique
high-strain-rate testing
numerical analysis
Opis:: Results of numerical analysis of the influence of pulse shaper geometry on wave signals in the split Hopkinson pressure bar experiment are presented. Five pulse shapers, i.e. square, ring, cross, star and disk ones have been analysed. It has been assumed that the disc pulse shaper is the reference geometry to assess the remaining types of pulse shapers. The results of numerical analyses have shown that pulse shapers with shapes different than disk are highly capable of minimizing high-frequency Pochhammer-Chree oscillations and, thus, reduce dispersion of waves propagating in the bar. The greatest damping ability has been observed while using the ring pulse shaper at both low and high impact velocities of the striker.
Źródło:: Journal of Theoretical and Applied Mechanics; 2018, 56, 4; 1217-1221
1429-2955
Pojawia się w:: Journal of Theoretical and Applied Mechanics
Dostawca treści:: Biblioteka Nauki

Artykuł

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