Question 24.3: Solve the displacement fields u if the stiffness and force m......
Solve the displacement fields u if the stiffness and force matrix is given as
| k= | ||
| 87500 | -86700 | 0 |
| -87500 | 151000 | -62500 |
| 0 | -62500 | 62500 |
| f= | ||
| 0 | ||
| 0 | ||
| 20000 | ||
Step-by-Step
>> k=2e05*[0.4375 -0.4335 0; -0.4375 0.755 -0.3125; 0 -0.3125 0.3125];
>> u=inv(k)*f
u=
11.01
11.111
11.431
Following example also illustrates the solution of linear equations
>> k=2e05*[.755 -0.3125; -0.3125 0.3125]
k=
151000 -62500
-62500 62500
>> f=[0; 20000]
f=
0
20000
>> u=inv(k)*f
u=
0.22599
0.54599
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