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need the plastic propertis of concrete

Submitted by m_meisam on

Dear Friends!

I'm Student of civil engineering in master's degree and I wanna model the plastic behavior of concrete under the blast load!

Now I need the plastic propertis of concrete!

If anyone of you have any information or any *.py file about the above topic please help me!

Hope for your help!

Regards

Meisam M.

Need Help for modeling concrete in abaqus

Submitted by m_meisam on

Dear Friends!

I'm Student of civil engineering in master's degree and I wanna model the plastic behavior of concrete under the blast load!

Now I need the plastic propertis of concrete!

If anyone of you have any information or any *.py file about the above topic please help me!

Hope for your help!

Regards

Meisam M.

resonance (natural) frequency of a cantilever beam

Submitted by Somashekara Bhat on
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resonance (natural) frequency of a cantilever beam is given by

f=[kn/2pi][sqrt(EI/wL^4)] where, kn=3.52 for mode 1, E is Young's modulus, I is moment of Inertia, w is beam width, L is beam length. (this is from Formulas for Stress and Strain, 5th edition by Raymond J. Roark and Warren C. Young).

 I would like to derive this formula. Can any one suugest me any book or any link?