HW 3 me 443 643 PDF

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Homework 3...

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Home Work 3 Problem # 1 [30 points] – Redo problem #1 from HW 2 – Mesh each bar of the truss structure with 4 elements – Fill the table shown in the next slide

4

20 ft

3

5 kip

3

1

2

30 ft

ME 443/643: Truss

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40 ft

2

10 kip

1

30 ft

Home Work 3 Problem # 1 – Fill the below table Truss member type

Displacement: Node #3 (mm) X

Y

Max Axial Stress: Bar 1

(Pa)

1 Element (Analytical) 1 Element (Radioss) 4 Elements (Radioss)

ME 443/643: Truss

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Max Axial Stress: Bar

(Pa)

2

Max Internal Force: Bar

(N)

3

Home Work 3 Problem # 2 [20 points] – Solve problem #1 from HW 1 using Radioss – The displacement at node 3 is not known – The diameter of steel bar is 22.5 mm, and the diameter of aluminum bar is 16 mm – Fill in the table shown in the next slide d1

d2

Steel

Aluminum

1m

ME 443/643: Truss

3 2

1

P = 20 kN

2

1

1m

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Home Work 3 Problem # 2 – Fill the below table Solved by

Displacement:

Displacement:

Max Axial Stress:

Max Internal Force:

Node 2

Node 3

Bar 2

Bar 1

(mm)

(mm)

(Pa)

(N)

Analytical

Radioss

HW 3 is due on March 19th

ME 443/643: Truss

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