Amplitude of mode shapes

Amplitude of mode shapes

Dear All,

I am a new user of STAAD Pro and interested in the Dynamic Analysis.
From the modal calculation command, we get a frequency, a (mass) participation X-Y-Z % by mode and mode shapes. I have questions as below?

1. Can the STAAD Pro show amplitude of 1st mode, 2nd mode, 3rd mode and other mode in the output?. Or
2. Can we find the amplitude of 1st mode, 2nd mode, 3rd mode and other mode by STAAD Pro?
3. Please help to explain the meaning of a (mass) participation X-Y-Z % ?.

Please help to answer the questions and thank you for your kind consideration.

pvsnak@live.com

Parents
  • Dear Saraswathi.I,

    Thank for your answers, and I try to do with your advice. I found the way to get mode shapes by mode with the print mode shapes command and the mode shapes is normalized (the number is show in 0 to 0.999 or 1). But I need to know the amplitude (the max. displacement) in unit mm or cm of each mode shapes. Could I ask you that

    1. Can we find the amplitude (the max. displacement) in unit mm or cm of each mode shapes by STAAD Pro?.

    2. Can I submit my STAAD (.std) file to you? And help to advise.

    Thank for your kind consideration.

    Sunthorn N. (pvsnak@live.com)

Reply
  • Dear Saraswathi.I,

    Thank for your answers, and I try to do with your advice. I found the way to get mode shapes by mode with the print mode shapes command and the mode shapes is normalized (the number is show in 0 to 0.999 or 1). But I need to know the amplitude (the max. displacement) in unit mm or cm of each mode shapes. Could I ask you that

    1. Can we find the amplitude (the max. displacement) in unit mm or cm of each mode shapes by STAAD Pro?.

    2. Can I submit my STAAD (.std) file to you? And help to advise.

    Thank for your kind consideration.

    Sunthorn N. (pvsnak@live.com)

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