Dimensionless wave numbers evolution of a three spans simply supported beam when the intermediate supports are moving along the whole beam

Authors

  • Zeno-Iosif PRAISACH Babeș-Bolyai University, Faculty of Engineering, Piaţa Traian Vuia, nr. 1-4, 320085, Reşiţa, Romania, zeno.praisach@ubbcluj.ro (*corresponding author) https://orcid.org/0000-0002-8613-8224
  • Dorel ARDELJAN Ph.D. Stud. Dorel Ardeljan, Babeș-Bolyai University, Faculty of Engineering, Piaţa Traian Vuia, nr. 1-4, 320085, Reşiţa, Romania, dorel.ardeljan@ubbcluj.ro
  • Constantin-Viorel PAȘCU Ph.D. Stud. Constantin-Viorel Pașcu, Babeș-Bolyai University, Faculty of Engineering, Piaţa Traian Vuia, nr. 1-4, 320085, Reşiţa, Romania, constantin.pascu@ubbcluj.ro

DOI:

https://doi.org/10.24193/subbeng.2021.1.2

Keywords:

natural frequency, dimensionless wave number, mode shape

Abstract

Continuous beams simply supported with several intermediate supports are very common in engineering achievements everywhere. The paper shows the evolution of the dimensionless wave number in 3D format, respectively of the eigenfrequencies for a continuous beam with three openings when the intermediate supports take any position inside the beam. The frequency equation for calculating the dimensionless wave number is presented and the modal function is given with an example for the case where the eigenfrequency has the maximum value at fist vibration mode.

References

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STUDIA UBB ENGINEERING, Volume 66 (LXVI), No. 1, November 2021

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Published

2021-11-09

How to Cite

PRAISACH, Z.-I., ARDELJAN, D., & PAȘCU, C.-V. (2021). Dimensionless wave numbers evolution of a three spans simply supported beam when the intermediate supports are moving along the whole beam. Studia Universitatis Babeș-Bolyai Engineering, 66(1), 17–24. https://doi.org/10.24193/subbeng.2021.1.2

Issue

Volume 66, No. 1, November 2021

Section

Articles

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Copyright (c) 2021 Studia Universitatis Babeș-Bolyai Engineering

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This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

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