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Architectural Institute of Korea (대한건축학회)
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Free Vibration Analysis of Elastic Bars using Isogeometric Approach

  • Lee, Sang-Jin (Department of Architectural Engineering, Gyeongsang National University) ;
  • Park, Kyoung-Sub (Department of Architectural Engineering, Gyeongsang National University)
  • Received : 2011.05.17
  • Published : 2011.09.30
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Abstract

A study on the free vibration analysis of elastic bar is described in this paper. In order to determine the natural frequencies of bars, a bar element is developed by using isogeometric formulation. The B-spline is introduced to represent the geometry of bar and the same geometric definition is also used to define its unknown displacement field in isogeometric formulation. Therefore, the stiffness and mass matrices are derived by the order-free B-spline basis function. The efficiency and accuracy of the present isogeometric bar elementis demonstrated by using several numerical tests. From numerical results, it is found to be that the present isogeometric element produces very accurate natural frequencies of bars. Finally, the present isogeometric solutions are provided as future reference solutions.

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References

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Cited by

  1. Isogeometric Analysis of Laminated Plates under Free Vibration vol.16, pp.3, 2014, https://doi.org/10.5659/AIKAR.2014.16.3.121
  2. Topology Optimization for Plane Structures using Isogeometric Approach vol.32, pp.2, 2016, https://doi.org/10.5659/JAIK_SC.2016.32.2.3