Thanks to All for your suggestions. Actually no question was raised in the forum regarding a shape function. But when I was searching on the net for the explanation of shape function I did not find any simple explanation.
So I referred some of the text books and made very simple derivation...
A concept of shape function in FEA is basic and very important. It governs the displacement in the element. The accuracy of the solution depends upon the shape function. I am posting a simple explanation for the shape function concept.
Let us consider a simple element. Assuming linear...
