Abstract
In this paper, I derived shape functions for a 20-nodal tri-quadratic serendipity element which consists of eight corner nodes and twelve mid-side nodes using natural coordinate system. I derived two shape function verification conditions, first verification condition sum of all the shape functions is equal to one, and second verification condition each shape function has a value of one at its own node and zero at all other nodes. For mathematical computations, I used Mathematica 9 Software.
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References
Liu GR, Quek SS (2003) The finite element method: a practical course. Elsevier Science Ltd., Amsterdam
Wolfram Mathematica® 9 Software, Version number 9.0.0.0
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Reddaiah, P. (2021). Deriving Shape Functions for a 20-Nodal Tri-quadratic Serendipity Element and Verified. In: Rushi Kumar, B., Sivaraj, R., Prakash, J. (eds) Advances in Fluid Dynamics. Lecture Notes in Mechanical Engineering. Springer, Singapore. https://doi.org/10.1007/978-981-15-4308-1_1
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DOI: https://doi.org/10.1007/978-981-15-4308-1_1
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