[B d[iVbc

In the present case of the two-node linear rod element, eqn. (9.32) shows [iV] = ^-[L — x, x], and hence

Note that in this case the derivative matrix [£] contains only constants and does not involve functions of x and hence the strain, given by eqn. (9.33), will be constant along the length of the rod element.

Assuming Hookean behaviour and utilising eqn. (9.33)

It follows for the linear rod element that the stress will be constant and is given as

0 0

Post a comment