Main Article Content
The aim of the paper is to analyze the free vibration of a symmetrical, spatial structure made up of bars, obtained by joining two identical subsystems. It is a real structure, encountered in civil engineering. In the literature, there are papers that have established vibration properties of structures with symmetry. In the paper, we propose to see if these properties apply to a structure made up by two identical, mirror symmetrical substructures and linked by common elements.
Journal author rights
In order for Romanian Journal of Acoustics and Vibration to publish and disseminate research articles, we need publishing rights. This is determined by a publishing agreement between the author and Romanian Journal of Acoustics and Vibration. This agreement deals with the transfer or license of the copyright to Romanian Journal of Acoustics and Vibration and authors retain significant rights to use and share their own published articles. Romanian Journal of Acoustics and Vibration supports the need for authors to share, disseminate and maximize the impact of their research and these rights, in Romanian Journal of Acoustics and Vibration proprietary are defined below:
For subscription articles:
Authors transfer copyright to the publisher as part of a journal publishing agreement, but have the right to: Share their article for personal use (manuscript version); retain patent, trademark and other intellectual property rights (including research data); proper attribution and credit for the published work.
For open access articles:
Authors sign an exclusive license agreement, where authors have copyright but license exclusive rights in their article to the publisher. In this case authors have the right to: share their article in the same ways permitted to third parties under the relevant user license; retain patent, trademark and other intellectual property rights (including research data); proper attribution and credit for the published work.
Rights granted to Romanian Journal of Acoustics and Vibration
For both subscription and open access articles, published in proprietary titles, Romanian Journal of Acoustics and Vibration is granted the following rights:
- The exclusive right to publish and distribute an article, and to grant rights to others, including for commercial purposes;
- For open access articles, Romanian Journal of Acoustics and Vibration will apply the relevant third party user licence (Open access licencses) where Romanian Journal of Acoustics and Vibration publishes the article on its online platforms;
- The right to provide the article in all forms and media so the article can be used on the latest technology even after publication;
- The authority to enforce the rights in the article, on behalf of an author, against third parties, for example in the case of plagiarism or copyright infringement.
How to Cite
. Ciuncanu, M., Chiroiu, V., On the post-earthquake damage detection of structures. Ro. J. Techn. Sci. Appl. Mechanics, Vol. 61, N 3, pp. 189, Bucharest, 2016.
. Douglas, Th., Structural Dynamics and Vibrations in Practice: An Engineering Handbook, CRC Press, 2012.
. Gillich, G.-R., Praisach, Z.-I., Iavornic, C.M., Reliable method to detect and assess damages in beams based on frequency changes. ASME 2012 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. pp. 129-137, 2012.
. Ioan, R., Munteanu, L., Dumitru, D., Determination of dynamic Young’s modulus for steel alloys. Romanian Journal of Mechanics, [S.l.], V. 1, N. 1, p. 3-12, 2016, ISSN 2537-5229.
. Mangeron, D., Goia, I., Vlase, S., Symmetrical Branched Systems Vibrations. Scientific Memoirs of the Romanian Academy, Bucharest, Serie IV, Tom XII, Nr.1, 1991, p.232-236.
. Marin M., On weak solutions in elasticity of dipolar bodies with voids, J. Comp. Appl. Math., vol. 82 (1-2), 291-297, 1997.
. Marin M., An approach of a heat-flux dependent theory for micropolar porous media, Meccanica, vol.51, No.5, pp.1127-1133, 2016.
. Meirovitch, L., Principles and Techniques of Vibrations. Pearson (1996).
. Negrean, I., Advanced notions in analytical dynamics of systems. Acta Technical Napocensis, Series: Applied Mathematics, Mechanics, and Engineering Vol. 60, Issue IV, November, 2017, p.491.
. Negrean, I., Mass distribution in analytical dynamics of systems. Acta Technical Napocensis, Series: Applied Mathematics, Mechanics, and Engineering Vol. 60, Issue II, June, 2017, p.175.
. Rades, M., Mechanical Vibrations, II. Ed. PRINTECH, 2010
. Timoshenko, P.S., M. Gere, J.M., Theory of Elastic Stability, McGraw-Hill,New York, London, 2nd Edition, 2009.
. Tyn Myint-U, Ordinary Differential Equations. Elsevier, 1977.
. Vlase, S., Finite element analysis of a linear elastic body in a centrifugal field. Romanian Journal of Mechanics, V. 2, N. 1, p. 51-62, 2017. ISSN 2537-5229.
. Vlase, S., A method of eliminating Lagrangian-multipliers from the equation of motion of interconnected mechanical systems. Journal of Applied Mecanics- Transactions of The ASME, Vol: 54 Issue: 1, pp.235-237 DOI: 10.1115/ 1.3172969.
. Vlase, S., Some properties of the Eigenvalues and Eigenvectors of the Elastic Systems with Three Identical Parts. Proceeding of the ASVM Conference, ISBN 973-625-238-8, Timişoara, p.227-231, 2005.
. Vlase, S., Cândea, I., Mihălcică, V., Ambruş, C., Vibration of the transmission of a truck with two identical engines. Proceedings of the 3rd International Conference EpsMsO, Athens, Greece, 8-11 July, 2009.
. Vlase, S., Chiru, A., Symmetry in the study of the vibration of some engineering mechanical systems. Proceedings of the 3rd International Conference 3rd International Conference EpsMsO, Athens, Greece, 8-11 July, 2009.
. Vlase, S., Năstac, C., Marin, M., Mihălcică, M., A method for the study of the vibration of mechanical bars systems with symmetries. Acta Technical Napocensis, Vol. 60, Issue IV, November, 2017, p.539.
. Vlase, S., Mihălcică, M., Scutaru, M.L., Năstac, C., Coupled transversal and longitudinal vibrations of a plane mechanical system with two identical beams, Ro. J. Techn. Sci. - Appl. Mechanics, Vol. 61, No 3, pp. 276-289, Bucharest, 2016.
. Vlase S., Păun,M., Vibrations analysis of a mechanical system consisting of two identical parts. Ro. J. Techn. Sci. − Appl. Mechanics, Vol. 60, No 3, pp. 216−230, Bucharest, 2015.