www.sefindia.org

[Dipak.Gaikwad]

Dear SAFIANS,
Is there any well defined procedure to calculate Damping of RCC structure?
Thanks

Dipak Gaikwad
Manager (Structural Design)
Reliance Industries Ltd.
"Confidentiality Warning: This message and any attachments are intended only for the use of the intended recipient(s), are confidential, and may be privileged. If you are not the intended recipient, you are hereby notified that any review, re-transmission, conversion to hard copy, copying, circulation or other use of this message and any attachments is strictly prohibited. If you are not the intended recipient, please notify the sender immediately by return email, and delete this message and any attachments from your system.

Virus Warning: Although the company has taken reasonable precautions to ensure no viruses are present in this email, the company cannot accept responsibility for any loss or damage arising from the use of this email or attachment."

Posted via Email

[sudipnc]

Dear Dipak Gaikwad,

Refer to chapter 11 of the book "Dynamics of Structures" by Anil K. Chopra. I guess you would get what you are looking for.

As a further note, damping really would not have much effect in a dynamic analysis - exceting the fact that the vibrations would gradually die down due to it's presence. But it does not have much effect on the natural frequencies.

Considering the fact that the damping hardly ever reaches 20% of the critical - you will have a damped frequency of 98% of the undamped. In concrete, I guess damping ratio is 5%.

Sincere Regards,
Sudip  

On Fri, 05 Oct 2007 Dipak.Gaikwad[AT]ril... wrote :

Sudip Narayan Choudhury
“Devangan”, Flat – F
9, Vivekananda Sarani
Calcutta – 700075
W.Bengal, India
Residence: +91 33 2418 4257
Cell: +91 98307 01642

Posted via Email