Autor: Rong, J. - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Primary parametric resonance of an axially accelerating beam subjected to static loads
Autorzy:: Hu, Y.
Rong, Y.
Li, J.
Powiązania:: https://bibliotekanauki.pl/articles/949296.pdf
Data publikacji:: 2018
Wydawca:: Polskie Towarzystwo Mechaniki Teoretycznej i Stosowanej
Tematy:: current-carrying beam
primary parametric resonance
magnetic ﬁeld
axial movement
static loads
Opis:: Primary parametric resonance and stability of an axially accelerating and current-carrying beam subjected to static loads in magnetic ﬁeld are investigated. The nonlinear magneto-elastic vibration equation is derived. The approximate solution of the static problem and the disturbance deferential equation of the beam with two sides simply supported are obtained. The frequency-response equation of primary parametric resonance is further achieved by a multi-scale method. According to stability conditions, the stability of the steady-state solution is also discussed. By numerical examples, the amplitude versus diﬀerent parameter curves and the bifurcation diagrams of the amplitude are acquired. The eﬀects of magnetic induction intensity, axial speed, detuning parameter and static loads on nonlinear vibration characteristics are also analyzed.
Źródło:: Journal of Theoretical and Applied Mechanics; 2018, 56, 3; 815-828
1429-2955
Pojawia się w:: Journal of Theoretical and Applied Mechanics
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Underwater Explosion Performance of RDX/AP-based Aluminized Explosives
Autorzy:: Xiang, D.
Rong, J.
He, X.
Feng, Z.
Powiązania:: https://bibliotekanauki.pl/articles/358616.pdf
Data publikacji:: 2017
Wydawca:: Sieć Badawcza Łukasiewicz - Instytut Przemysłu Organicznego
Tematy:: UNDEX
RDX/AP-based aluminized explosives
detonation
shock wave
Al/O ratio
Opis:: To understand the underwater explosion (UNDEX) performance of RDX/AP-based aluminized explosives, six formulations of the explosives were prepared, with Al content varying from 30% to 55% and ammonium perchlorate (AP) content from 45% to 20%. A series of UNDEX tests that used a 1 kg cylindrical charge was conducted underwater at a depth of 4.7 m. The pressure histories of the shock wave produced at different positions and the bubble periods were measured. The coefficients of the similarity law equation for the shock wave parameters were fitted with experimental data. The effect of the aluminum/oxygen (Al/O) ratio on the performance of the energy output structure for RDX/AP-based aluminized explosives is discussed. The bubble motion during UNDEX was simulated using MSC.DYTRAN software, and the radius-time curves of the bubbles were determined. The results show that AP influences the detonation reaction mechanism of RDX/AP-based aluminized explosives, which causes different UNDEX performances. The bubble energy of the RDX/AP-based aluminized explosive was higher than that of RDX-based and HMX-based aluminized explosives.
Źródło:: Central European Journal of Energetic Materials; 2017, 14, 1; 60-76
1733-7178
Pojawia się w:: Central European Journal of Energetic Materials
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Detonation Performance of Four Groups of Aluminized Explosives
Autorzy:: Xiang, D.-L.
Rong, J.-L.
He, X.
Powiązania:: https://bibliotekanauki.pl/articles/358148.pdf
Data publikacji:: 2016
Wydawca:: Sieć Badawcza Łukasiewicz - Instytut Przemysłu Organicznego
Tematy:: aluminized explosive
detonation pressure
detonation velocity
heat of detonation
KHT code
Opis:: The detonation performances of TNT-, RDX-, HMX-, and RDX/AP-based aluminized explosives were examined through detonation experiments. The detonation pressure, velocity, and heat of detonation of the four groups of aluminized explosives were measured. Reliability verification was conducted for the experimental results and for those calculated with an empirical formula and the KHT code. The test results on detonation pressures and velocities were in good agreement with the predicted values when aluminum (Al) particles were considered inert. The experimental heat of detonation values exhibited good consistency with the predicted values when a certain proportion of Al particles was active. Ammonium perchlorate (AP) can effectively reduce the detonation pressure and improve the heat of detonation for the RDX/AP-based aluminized explosive. A comparison of the current test results and literature data shows that errors may exist in early test data. The test data presented in this study allow for an improved understanding of the detonation performance of the four groups of aluminized explosives.
Źródło:: Central European Journal of Energetic Materials; 2016, 13, 4; 903-915
1733-7178
Pojawia się w:: Central European Journal of Energetic Materials
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: Predict manoeuvring indices using AIS data by ridge regression
Autorzy:: Mou, J.
Tang, G.
Rong, H.
Yue, X.
Powiązania:: https://bibliotekanauki.pl/articles/359863.pdf
Data publikacji:: 2013
Wydawca:: Akademia Morska w Szczecinie. Wydawnictwo AMSz
Tematy:: ridge regression
manoeuvring
AIS data
prediction
collision avoidance
Opis:: The ridge regression is presented for identify manoeuvring indices in Nomoto’s model, and the result indicates that the method is robust and does not rely on initial estimation. For selecting appropriate AIS data for manoeuvring indices predicting, a frequency domain identification method is presented.
Źródło:: Zeszyty Naukowe Akademii Morskiej w Szczecinie; 2013, 36 (108) z. 2; 137-142
1733-8670
2392-0378
Pojawia się w:: Zeszyty Naukowe Akademii Morskiej w Szczecinie
Dostawca treści:: Biblioteka Nauki

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