Temperature change effects on the mode shapes
Temperature change effects on the mode shapes
(OP)
Hi everyone
I am working on modeling a bridge in ABAQUS and I am interested in investigating effects of temperature change on the period of different bridge's vibration modes. Since I am new to the ABAQUS, I don't know what type of analysis should be used for that purpose. Any comments are welcomed.
Thanks a lot in advance for your help
Montazar





RE: Temperature change effects on the mode shapes
------------
See FAQ569-1083: Asking questions the smart way on Eng-Tips fora for details on how to make best use of Eng-Tips.com
RE: Temperature change effects on the mode shapes
Thank you very much Drej
You are right but since the structure is constrained the change in temperature induces additional forces in the members which may change the period of bridge.
Anyway, forgetting about the modulus changes and supposing the temperature changes in the range 0 to +60 degrees do you have any idea about doing the analysis. I want to track the change of vibration mode periods along a typical day supposing I have the graph of the weather temperature change for 24 hours.
thanks
Montazar
RE: Temperature change effects on the mode shapes
------------
See FAQ569-1083: Asking questions the smart way on Eng-Tips fora for details on how to make best use of Eng-Tips.com
RE: Temperature change effects on the mode shapes
(This is the same as Drej said, only "use the results of this as the initial conditions" is a bit cryptic, you can just make a new step in abaqus)
RE: Temperature change effects on the mode shapes
Thanks a lot sdebock for sharing the information
But I think that only gives me the response at the final step, I mean I can't track the change in modes period as the temperature changes. I need to come up with graphs with horizontal axis to be temperature and the vertical one mode period. what you are saying only gives me the value of mode period at the final stage and the evolution of mode shape period cant be recorded.
Thanks again for your help
u of Alberta
Montazar