Analysis of complex damped longitudinally vibrating systems in transportation

• Autorzy: Żółkiewski S.
• Języki publikacji: EN

Abstrakty

EN

Purpose: of this thesis is dynamical analysis of complex systems in transportation. Analyzed systems are composed of rotatable rods. Transportation was defined as main motion of rods and the overall system. Design/methodology/approach: The dynamical flexibility method is a leading methodology for dynamic analysis of considered systems. For solving equations of motion to dynamical flexibility the Galerkins method was used. Findings: There were considered systems consisted of rods. Rods are rotated first round the origin of global reference frame simultaneously, the attached point and further ones round the end of the previous one. Charts of dynamic characteristics, in a form of dynamic flexibility as function of frequency and mathematical models were shown in this article. Research limitations/implications: All multi-body systems components were simple linear homogeneous rods, the first one as the fixed rod and next ones treated as free-free rods. Transportation was limited to plane rotational motion round the Z axis of global reference frame. Future works would consider complex systems with geometrical and physical nonlinearity. Practical implications: of presented analysis are derivation of multi-body rod systems of dynamic flexibility. Dynamic flexibility can be used in designing process. Presented mathematical models may be used for implementation in numerical applications and for automating some calculations in this type of systems. Originality/value: In the mathematical model the damping forces were taken into consideration and the dynamic flexibility of complex systems was derived.

Słowa kluczowe

EN

numerical technique; computational mechanics; applied mechanics; complex system

PL

technika nuneryczna; mechanika numeryczna; mechanika stosowana; system kompleksowy

• Wydawca: International OCSCO World Press
• Czasopismo: Journal of Achievements in Materials and Manufacturing Engineering
• Rocznik: 2009
• Tom: Vol. 36, nr 2
• Strony: 176--183
• Opis fizyczny: Bibliogr. 21 poz., rys., tabl.

Twórcy

autor

Żółkiewski S.

• Division of Mechatronics and Designing of Technical Systems, Institute of Engineering Processes Automation and Integrated Manufacturing Systems, Silesian University of Technology, ul. Konarskiego 18a, 44-100 Gliwice, Poland,

Bibliografia

• [1] A. Buchacz, S. Żółkiewski, Formalization of the longitudinally vibrating rod in spatial transportation, Proceedings of the International Conference “Machine- Building and Technosphere of the XXI Century”, Sevastopol, 2007, 4, 279-283.
• [2] A Buchacz, S. Żółkiewski, The dynamic flexibility of the transversally vibrating beam in transportation, Folia Scientiarum Universitatis Technicae Resoviensis no. 222, Mechanics b. 65, Problems of dynamics of construction, Rzeszów – Bystre, 2005, 29-36.
• [3] A Buchacz, S. Żółkiewski, Dynamic analysis of the mechanical systems vibrating transversally in transportation, Journal of Achievements in Materials and Manufacturing Engineering 20 (2007) 331-334.
• [4] A Buchacz, S. Żółkiewski, Mechanical systems vibrating longitudinally with the transportation effect, Journal of Achievements in Materials and Manufacturing Engineering 21/1 (2007) 63-66.
• [5] A Dymarek, The sensitivity as a Criterion of Synthesis of Discrete Vibrating Fixed Mechanical Systems, Journal of Materials Processing Technology 157-158 (2004) 138-143.
• [6] A Dymarek, T. Dzitkowski, Modelling and Synthesis of Discrete-Continuous Subsystems of Machines with Damping, Journal of Materials Processing Technology 164-165 (2005) 1317-1326.
• [7] T. Dzitkowski, Computer Aided Synthesis of Discrete- Continuous Subsystems of Machines with the Assumed Frequency Spectrum Represented by Graphs, Journal of Materials Processing Technology 157-158 (2004) 1317-1326.
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• [15] J. Świder, G. Wszołek, Analysis of complex mechanical systems based on the block diagrams and the matrix hybrid graphs method, Journal of Materials Processing Technology 157-158 (2004) 250-255.
• [16] J. Świder, P. Michalski, G. Wszołek, Physical and geometrical data acquiring system for vibration analysis software, Journal of Materials Processing Technology 164-165 (2005) 1444-1451.
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• [20] S. Żółkiewski, Modelling of dynamical systems in transportation using the Modyfit application, Journal of Achievements in Materials and Manufacturing Engineering 28/1 (2008) 71-74.
• [21] M Pasek, Hypergraphs frameworks as machine models, PhD Thesis, Gliwice, 1997 (in Polish).