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Computer-Aided Engineering Design

Homework

Assignment 1

Due on September 12

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Assignment

Solve example 1 using (1) two elements and (2) eight elements. Compare your results to the exact values

Problem 1

Note:The results form exact displacement

Y=0 0

Y=2.5 0.001027

Y=5.0 0.002213

Y=7.5 0.003615

Y=10 0.005333

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Problem 1 (cont.)

(Determining how much the bar will deflect at various point along its length when it is subjected to the load P)

Ly

w1

W2

P

E=10.4x106 lb/in2, w1=2 in, w2=1 in, t=0.125 in, L=10 in, P=1000 lb.

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Assignment

A concrete table column-support with the profile show in the accompanying figure is to carry a load of approximately 500 lb. Using the direct method discussed in class, determine the deflection and average normal stresses along the column. Divide the column into five elements (E=3.27 x 103 ksi)

Problem 2

9 in

1 ft

28 in

500 lb

4 in

The thickness of table: 3 in.