EXPERIMENTAL ANALYSIS ON DYNAMICS OF VARIABLE MASS SYSTEM
In this paper, the author studies the specific motion of mechanical system with low rates of mass variation. A variable mass–spring system has been developed using different materials for discharging (sand and gravel). Experimental procedure involves monitoring of the dynamics of expansion tank within the system configuration, along vertical direction, during the flow process of two materials. The spectral analysis of acquired acceleration, in terms of spectrum magnitudes and joint time-frequency spectrogram respectively, was considered, in order to evaluate the mass flow-rate equation. Comparative analysis between experimental and computational mass variation laws was performed, based on the tests acquirements and, respectively, on the available literature information.
Key words: variable mass system, experimental analysis, dynamics, mass flow-rate law, spectral analysis.
Banerjee, A. K., Dynamics of a Variable-Mass, Flexible-Body System, Journal of Guidance, Control and Dynamics, Vol. 23, No. 3, pp. 501-508, 2000
Castro, F., Tomé, P.S., Neto, S., Ortiz, E., Estudo de um sistema oscilante com massa variável, Blucher Physics Proceedings, Abril, Número 2, Volume 1, 2014
Celia A. de Sousa, Vitor H. Rodrigues, Mass distribution in variable mass system, European Journal of Physics, vol. 25, pp. 41-49, 2004
Digilov, R.-M., Reiner, M., Weizman, Z., Damping in a variable mass on a spring pendulum, American Journal of Physics, Vol. 73, No. 10, pp. 901-905, 2005
Flores, J., Solovey, G., Gil, S., Flow of sand and a variable mass Atwood machine, American Journal of Physics, vol. 71, Issue 7, pp. 715 - 720, July, 2003
Guillaume, P., Regularization of the two body problem with variable mass, Vol. 10, Issue 2, pp. 141–149, 1974
Lupea, I., Considerations on an elementary fluid-structure coupling system, Acta Technica Napocensis Series: Applied Mathematics, Mechanics, and Engineering Vol. 57, Issue IV, November, 2014 pp.487-492
Makharoblidze, R. M., Lagvilava, I. M., Basilashvili, B. B., Khazhomia, R. M., Dynamics calculation with variable mass of mountain self-propelled chassis, Annals of Agrarian Science, Vol. 14, Issue 4, Pages 340-342, 2014
Metin, Y., The flow of sand, The Physics Teacher, Vol.38, Issue 5, pp.290–291, 2000
Moholea, I.F., Popescu, D.I., Ursu-Fischer, N., Contributions to the study of the masses chaotic movements of a mechanical system, Acta Technica Napocensis Series: Applied Mathematics, Mechanics, and Engineering Vol. 58, Issue III, September, 2015 pp. 435-440
Negrean, I., Mass distribution in analytical dynamics of systems, Acta Technica Napocensis Series: Applied Mathematics, Mechanics, and Engineering Vol. 60, Issue II, June, 2017, pp. 175-184
Nastac, S., On Damage Detection in Beams Based on Dynamic Tests and Transitory Analysis, The Annals of "Eftimie Murgu" University of Reșița, Engineering Fascicle, Year XX, No.3, pp. 164-170, 2013
Pop, E., Steopan, M., Ciupan, C., Filip, I., Decreasing the mass of a sofa side made of composite materials based on vegetable fibers, Acta Technica Napocensis Series: Applied Mathematics, Mechanics, and Engineering Vol. 61, Issue IV, November, 2018, pp. 775-780
Rodrigues, H., Panza, N., Portes Jr. D., Soares, A., A model of oscillator with variable mass, Revista Mexicana de Fısica, Vol. 60, pp. 31–38, 2014
Syed Iftikhar Ahmed. Flow of granular material through orifices, Thesis, McGill University, Montreal, 1959
Starosta, R., Sypniewska-Kamińska, G., Awrejcewicz, J., Vibration of the Oscillator Exchanging Mass with Surroundings, Vibrations in Physical Systems, Vol. 27, pp. 333- 338, 2016
Tuge, C., Gezahegn, N., Stability Analysis of Dynamics of Variable Mass System, Asian Journal of Applied Science and Technology - AJAST, Vol. 1, Issue 9, pp. 305-313, 2017
Wanghua Sui, Yankun Liang, Xinjia Zhang, Ravi Jain & Tao Zhu, An experimental investigation on the speed of sand flow through a fixed porous bed, Scientific Reports, volume 7, Article number: 54, 2017.
- There are currently no refbacks.