I need help in this assignment problem that requires the use of stiffness matrix and excel to...

Question

I need help in this assignment problem that requires the use of stiffness matrix and excel to analyze the structure.

Hemalatha · Accepted Answer

The problem statement is as follows
SOLUTION
Horizontal displacements of joints C and B and rotations of B, C, D and E are independent displacement components. Also, the horizontal joint displacement of joint at D is same as that of joint C. The horizontal joint displacement of joint at B is same as that of joint E, as well.
Therefore, DOF (degrees of freedom) is six. Figure (a) shows the possible displacement shown as coordinates.
Figure (a)
Moments at the coordinates due to fixed end moments (caused due to externally applied loads) are represented in matrix form as [P’].
In this case [P’] is a null matrix.
Loads acting at the coordinates are shown in a matrix which is denoted by [P].
[P] = 
	35
	20
	0
	0
	0
	0
Calculation of Stiffness Matrix
First column is determined by applying unit displacement at coordinate 1 at a time and measuring the forces at all the coordinates as shown figure (b).
First column is determined by applying unit displacement at coordinate 1 at a time and measuring the forces at all the coordinates as shown figure (c).
First column is determined by applying unit displacement at coordinate 1 at a time and measuring the forces at all the coordinates as shown figure (d).
First column is determined by applying unit displacement at coordinate 1 at a time and measuring the forces at all the coordinates as shown figure (e).
First column is determined by applying unit displacement at coordinate 1 at a time and measuring the forces at all the coordinates as shown figure (f).
First column is determined by applying unit displacement at coordinate 1 at a time and measuring the forces at all the coordinates as shown figure (h).

I need help in this assignment problem that requires the use of stiffness matrix and excel to analyze the structure.

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