MEC3302 – Computational Mechanics in Design assignment help

Question 1.1 (70/100 marks) 

Problem Statement 

Using the stiffness method, determine the axial forces within members and the deflections of the joints of the truss shown in the Figure 1. The truss is built using 100 mm x 100 mm x 5 mm SHS with E= 200 GPa (approx). Determine the local stiffness matrices for each member and the assembled global stiffness matrix. Show your step by step solution. Use a convenient method to solve the matrices if necessary (e.g. inverse matrices). (Cross members AC and BD are not connected at the middle and angle θ = 500) 

Question 1.2 (30/100 marks) 

Perform an appropriate finite element analysis for the truss shown in the Figure 1. using Creo 4.0 Simulate. Determine the axial forces within members and the deflections of the joints of the truss and tabulate the results i.e. axial forces of the truss members, reactions at the supports, and the displacements at the joints. Compare your results with the manual calculations in Q (1). 

Note: 1. Do not include self-weight of the members in the analysis 

2. Use simple beam elements (lines) for FEA 

1 

θ 

12 kN 

9 kN 

D 

D 

C 

C 

C 

15 kN 

A 

Not connected 

E 

B 

4m 3m 

10 kN 

10 kN 

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