This figure shows a frame structure, made

up of equilateral triangles, where

6

20,959

The cross sectional area of each member

is 0.04 . Point A is fixed but allowed

to rotate. Point G is allowed to rotated

and is fixed in the direction only. The

frame is made from steel, with Youngs

modulus and Poisson's ratio:

Using truss elements, create a finite

element model of the structure. Use it to

find the absolute value of the stress in

member BC.

Give your answer in pascals. Give your

answer to O decimal places.