Equivalent static vs. response spectrum: a comparison of two methods

David T. Finley; Ricky A. Cribbs

doi:10.1117/12.552172

29 September 2004 Equivalent static vs. response spectrum: a comparison of two methods

David T. Finley, Ricky A. Cribbs

Author Affiliations +

Proceedings Volume 5495, Astronomical Structures and Mechanisms Technology; (2004) https://doi.org/10.1117/12.552172
Event: SPIE Astronomical Telescopes + Instrumentation, 2004, Glasgow, United Kingdom

Abstract

Developments in computer hardware and software have made analysis techniques that were formerly too expensive within the reach of most project budgets. Foremost among these has been seismic response spectrum analysis. This method yields much more accurate results than the equivalent static approach. The problem with using response spectrum analysis exclusively in the design of deflection controlled structures, such as astronomical telescopes, is that the nature of the structure minimizes the benefits of the approach. A typical response spectrum from Eurocode 8 deals with a range of natural periods between 0.1 and 5 seconds. These correspond to a frequency range of 0.2 to 10 Hz. The typical telescope structure has a minimum frequency of around 10 Hz. or greater. The result is that the response spectrum analysis involves only a narrow band of frequencies and accelerations. This result could be reliably obtained using an equivalent static analysis approach.

Citation Download Citation

David T. Finley and Ricky A. Cribbs "Equivalent static vs. response spectrum: a comparison of two methods", Proc. SPIE 5495, Astronomical Structures and Mechanisms Technology, (29 September 2004); https://doi.org/10.1117/12.552172

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

;

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE