Finite Element Model analysis of ExternalFrame for tower B1 and B2

Document #:

JGW-T1201363-v3

Document type:

T

Submitted by:

Riccardo DeSalvo

Updated by:

Riccardo DeSalvo

Document Created:

29 Oct 2012, 10:20

Contents Revised:

12 Nov 2012, 19:36

DB Info Revised:

12 Nov 2012, 19:36

Abstract:

This note contains descriptions, and analysis of the external frames of tower B1 and B2.
This note is organized in three sections. The first section is an introduction that describes the frame structure. The second section contains a finite element analysis (Fea) to verify the rigidity and natural frequencies on the frames. The third section is dedicated to the harmonic response analysis. Conclusions are reported in the section four.

Files in Document:

• report (Frame_mod_ana_ver2.2.doc, 4.3 MB)

Other Files:

• 3-D illustration of optional damping bars (NEW TOWERB1-7-11-12.dwfx, 855.2 kB)
• movies of first modes (movies of first modes of structure.tgz, 2.2 MB)

Topics:

• Activity:KAGRA
• Detector:Seismic Isolation

Authors:

• Riccardo DeSalvo

Notes and Changes:

slightly updated report version
in addition a 3-D illustration of optional damping bars is added, this is still work ongoing, the damping bars, mounted with dissipative rubber gaskets, should be implemented only if necessary