doubt: figure in Example6.1.tcl

[nanii0711]

opensees.berkeley.edu/OpenSees/manuals/ExamplesManual/HTML/874.htm

i want the dimensions of the simply supported beam with the load details given in the code... please respond me... waiting for it...

Thanks.

[vesna]

it is a 40 in. long and 10 in. tall beam. As static load there are two concentric forces pointing downward, 10 kip each, acting at the beam middle line, one at the top and another at the bottom of the beam. The load is removed after static analysis which induced free vibrations in the beam.

[nanii0711]

thank you vesna.. i understood it last night after going thoroughly through the code... but what about the extra commands that appeared on the code mean prp and vup? I did not find them in the manuals anywhere..

recorder display SimplySupportedBeam 10 10 800 200 -wipe

prp 20 5.0 100.0

vup 0 1 0

viewWindow -30 30 -10 10

display 1 4 5

and can we solve this problem analytically to check the results obtained? just i want to know yes or no?

sorry for bugging you ppl..

[nanii0711]

and for nDmaterial command given in manual..

nDMaterial ElasticIsotropic $matTag $E $v

but in the given code it is

nDMaterial ElasticIsotropic 1 1000 0.25 6.75

what does 6.75 indicate here?

[vesna]

To understand what vup and prp mean check this link:
http://www.cs.uic.edu/~jbell/CourseNote ... oints.html

Yes, you can check the results analytically. For this you will need knowledge about finite elements.

The last argument in nDmaterial command,6.75, is mass density. Thanks for pointing this out. We will update the manual.