Optimum Finite Element for the 1-D Geometrical Structures
A. Eswara Kumar1, B. Kiran Kumar2, B.V. Dhermendra3, P. Phani Prasanthi4

1A. Eswara Kumar, Department of Mechanical Engineering, Koneru Lakshmaiah Education Foundation, Green Fields, Vaddeswaram, Guntur (Andhra Pradesh), India.
2B. Kiran Kumar, Department of Mechanical Engineering, Koneru Lakshmaiah Education Foundation, Green Fields, Vaddeswaram, Guntur (Andhra Pradesh), India.
3B.V Dharmendra Department of Mechanical Engineering, Koneru Lakshmaiah Education Foundation, Green Fields, Vaddeswaram, Guntur (Andhra Pradesh), India.
4P. Phani Prasanthi, Department of Mechanical Engineering, PVPSIT, Kanuru, Vijayawada (Andhra Pradesh), India.
Manuscript received on 01 June 2019 | Revised Manuscript received on 07 June 2019 | Manuscript published on 30 June 2019 | PP: 2061-2066 | Volume-8 Issue-8, June 2019 | Retrieval Number: H6949068819/19©BEIESP
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© The Authors. Blue Eyes Intelligence Engineering and Sciences Publication (BEIESP). This is an open access article under the CC-BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)

Abstract: Generally, in finite element method (CAE software like ANSYS) to solve the bar and truss problems two-node link element will be used. In 3-D link element, each node contains three DOF (Translations in x,y,z directions). To solve the beam structures, two-node beam element that has 6 DOF (3 Translations + 3 Rotations) will be used. In both theory and finite element CAE packages, it is creating slight confusion and trouble to use different elements for different structures as stated above. In the present work, an attempt was made to solve the bar and truss problems with beam element, as beam element already contains the DOF of link element. Finite element method simulation software was used to perform the analysis. Link 180 and beam 188 elements were used from the ANSYS library. The possibility of using the beam element for both bar and truss problems was verified for three different structures viz. stepped bar, plane truss and space truss in both static structural and modal analysis cases. From the results, it was observed that link element can be replaced with beam element conveniently for static structural and modal analysis cases with few assumptions.
Keywords: Bar, Truss, Link 180, Beam 188, Static Structural, Modal Analysis.

Scope of the Article: Concrete Structures