Use Stiffness Matrix Theory of Structures

SET $1$:

PROBLEM $1(2$D Truss Frame$)$:

For the given plane truss illustrated below, solve for all unknown reactions at supports

$($in kN $)$ and all unknown displacements $($in mm $).$ Use Matrix theory and excel file in

formula format using excel matrix operators.

Given:

All materials is of steel: $E=200,000$MPa

Cross section area of chord elements ; $\frac{?}{\text{b}\text{a}\text{r}}(=)$ Achrd $=2500$ m${}^{}$m2

Cross section area of web elements: $-$ Aweb $=2000m{m}^2$