About structural dynamic reanalysis
Апстракт
The methods of structural dynamic modification, especially those with their roots in finite element
models, have often been described as reanalysis. The present paper deals with the problem of improving of dynamic characteristics some structures. New dynamic modification procedure is given as using distribution of potential and kinetic energy in every finite element is used for analysis. Studying the dynamic behavior of structures can be predicted responses due to changes in its shape, size or design
elements change materials. The main goal of dynamic optimization is to increase natural frequencies and to
increase the difference between them. Especially, the lowest frequencies are the most interesting and those
whose values are close to frequency excitation force in the system.
Consequently these are further characteristic areas:
I The elements with kinetics and potential energy, which values are negligible comparing to other
elements.
II Elements with the kinetics energy grea...ter than the potential energy.
III Elements with the potential energy greater than kinetics.
IV Elements with kinetics and potential energy, which values are not negligible comparing to other
elements.
By observing diagrams of the distribution difference of the increment potential and kinetic energy on the modes shape of interest, modification can be suggested. The application of mentioned procedure of real structures shows its practical side.
Кључне речи:
structural dynamics / reanalysisИзвор:
Proceedings of the 12th Symposium of Mathematics and its Applications, 5-7th November 2009, Timisoara, Romania, 2009, 515-525Издавач:
- Department of Mathematics from the „Politehnica” University of Timisoara
- The Romanian Academy, Branch Timisoara
Колекције
Институција/група
Mašinski fakultetTY - CONF AU - Trišović, Nataša AU - Maneski, Taško AU - Golubović, Zoran AU - Lazarević, Mihailo AU - Šumarac, Dragoslav PY - 2009 UR - https://machinery.mas.bg.ac.rs/handle/123456789/6762 AB - The methods of structural dynamic modification, especially those with their roots in finite element models, have often been described as reanalysis. The present paper deals with the problem of improving of dynamic characteristics some structures. New dynamic modification procedure is given as using distribution of potential and kinetic energy in every finite element is used for analysis. Studying the dynamic behavior of structures can be predicted responses due to changes in its shape, size or design elements change materials. The main goal of dynamic optimization is to increase natural frequencies and to increase the difference between them. Especially, the lowest frequencies are the most interesting and those whose values are close to frequency excitation force in the system. Consequently these are further characteristic areas: I The elements with kinetics and potential energy, which values are negligible comparing to other elements. II Elements with the kinetics energy greater than the potential energy. III Elements with the potential energy greater than kinetics. IV Elements with kinetics and potential energy, which values are not negligible comparing to other elements. By observing diagrams of the distribution difference of the increment potential and kinetic energy on the modes shape of interest, modification can be suggested. The application of mentioned procedure of real structures shows its practical side. PB - Department of Mathematics from the „Politehnica” University of Timisoara PB - The Romanian Academy, Branch Timisoara C3 - Proceedings of the 12th Symposium of Mathematics and its Applications, 5-7th November 2009, Timisoara, Romania T1 - About structural dynamic reanalysis EP - 525 SP - 515 UR - https://hdl.handle.net/21.15107/rcub_machinery_6762 ER -
@conference{ author = "Trišović, Nataša and Maneski, Taško and Golubović, Zoran and Lazarević, Mihailo and Šumarac, Dragoslav", year = "2009", abstract = "The methods of structural dynamic modification, especially those with their roots in finite element models, have often been described as reanalysis. The present paper deals with the problem of improving of dynamic characteristics some structures. New dynamic modification procedure is given as using distribution of potential and kinetic energy in every finite element is used for analysis. Studying the dynamic behavior of structures can be predicted responses due to changes in its shape, size or design elements change materials. The main goal of dynamic optimization is to increase natural frequencies and to increase the difference between them. Especially, the lowest frequencies are the most interesting and those whose values are close to frequency excitation force in the system. Consequently these are further characteristic areas: I The elements with kinetics and potential energy, which values are negligible comparing to other elements. II Elements with the kinetics energy greater than the potential energy. III Elements with the potential energy greater than kinetics. IV Elements with kinetics and potential energy, which values are not negligible comparing to other elements. By observing diagrams of the distribution difference of the increment potential and kinetic energy on the modes shape of interest, modification can be suggested. The application of mentioned procedure of real structures shows its practical side.", publisher = "Department of Mathematics from the „Politehnica” University of Timisoara, The Romanian Academy, Branch Timisoara", journal = "Proceedings of the 12th Symposium of Mathematics and its Applications, 5-7th November 2009, Timisoara, Romania", title = "About structural dynamic reanalysis", pages = "525-515", url = "https://hdl.handle.net/21.15107/rcub_machinery_6762" }
Trišović, N., Maneski, T., Golubović, Z., Lazarević, M.,& Šumarac, D.. (2009). About structural dynamic reanalysis. in Proceedings of the 12th Symposium of Mathematics and its Applications, 5-7th November 2009, Timisoara, Romania Department of Mathematics from the „Politehnica” University of Timisoara., 515-525. https://hdl.handle.net/21.15107/rcub_machinery_6762
Trišović N, Maneski T, Golubović Z, Lazarević M, Šumarac D. About structural dynamic reanalysis. in Proceedings of the 12th Symposium of Mathematics and its Applications, 5-7th November 2009, Timisoara, Romania. 2009;:515-525. https://hdl.handle.net/21.15107/rcub_machinery_6762 .
Trišović, Nataša, Maneski, Taško, Golubović, Zoran , Lazarević, Mihailo, Šumarac, Dragoslav, "About structural dynamic reanalysis" in Proceedings of the 12th Symposium of Mathematics and its Applications, 5-7th November 2009, Timisoara, Romania (2009):515-525, https://hdl.handle.net/21.15107/rcub_machinery_6762 .