Civil Engineering/QUESTION

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Question
hello Mr.Hakimi
when multistory building is subjected to earth quick :
given :
mass matrix , natural mode , frequency vector , speed Spectrum vector .
can we find the formula of the displacements for each mass as a function to time ? if we can , what is the  formula  ?

Answer
Dear Ammar

You can find the time history of displacement of each mass provided that you apply an accelerogram. The procedure is complicated but you you can use finite element softwares like sap2000, etabs , ansys, staad pro to calculate.

Regards
BEH

Civil Engineering

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Babak Esmailzadeh Hakimi

Expertise

I can answer questions in Structural Engineering, Earthquake Engineering, Project Management and Project Control topics!

Experience

I am experienced in the area of earthquake engineering in electrical power industry, i.e. Lifeline Earthquake Engineering. My focus has been on structural seismic design of power installations. Recently I have got involved in project management in the category of constructional engineering.

Organizations
Sinam Consulting Engineers Co.

Education/Credentials
Bs degree in Civil Engineering from Ferdowsi University ,1988, Mashhad Iran, Ms degree in Earthquake Engineering, Sharif University of Technology, 1993, Tehran, Iran

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