Question

Determine the Jacobin matrix, strain-displacement, stress of four nodal rectangular element.
The coordinates are A(10, 10), B(20, 10), C(20, 20) and (10, 20). Take E = 210GPa, μ = 0.3.
u={0, 0, 0.002, 0.004, 0.003, 0.0042, 0, 0} T .

Answer 1

$[\sigma]$ = $\lbrack\sigma x \sigma y \sigma z ~~~~ \rbrack$

= $\lbrack233.52,78.45,148.60 ~~~~ \rbrack$ kn/cm²