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RESEARCH PAPERS

Experimental Study of Mechanical Pipe Snubber Seismic Behavior

[+] Author and Article Information
D. K. Nims

Department of Civil Engineering, University of Toledo, Toledo, OH 43606-3390

J. M. Kelly

Earthquake Engineering Research Center, University of California, Berkeley, Berkeley, CA 94804

J. Pressure Vessel Technol 119(3), 384-388 (Aug 01, 1997) (5 pages) doi:10.1115/1.2842320 History: Received March 08, 1996; Revised January 03, 1997; Online February 11, 2008

Abstract

A series of seismic tests of mechanical snubbers on a full-scale model piping system provided a unique opportunity for detailed scrutiny of snubber seismic behavior on an actual piping system. The observed snubber behavior is a complicated pattern of braking and releasing, drag and drift, and the dynamic characteristics of the snubber, as well as the input motion, play a role in the response of the snubber. The snubbers were effective in limiting pipe displacements. Relative accelerations across the snubber were larger than expected. Snubber hysteretic behavior was irregular. Results from this testing are important in understanding snubber behavior, evaluating snubber performance, and in assessing alternatives to snubbers.

Copyright © 1997 by The American Society of Mechanical Engineers
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