Analysis of piping systems with nonlinear supports subjected to seismic loading
An analytical study of effects of nonlinearities in piping supports on response to seismic excitation is presented. Response calculations for simplified single degree of freedom nonlinear models are used to illustrate sensitivity to stiffness variations, lost motion and impact damping. Seismic responses of typical spans of various sizes of piping supported by both linear and nonlinear constraints are compared to assess the support load magnifications due to impacting. The idealized nonlinear piping support models are integrated with a finite element model of a large piping system. Time domain seismic responses of the nonlinear piping system are compared to loads determined by a standard linearized seismic response spectra technique.
- Research Organization:
- Hanford Engineering Development Lab., Richland, WA (USA)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- EY-76-C-14-2170
- OSTI ID:
- 5944594
- Report Number(s):
- HEDL-SA-1769; CONF-790615-18
- Country of Publication:
- United States
- Language:
- English
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EPITHERMAL REACTORS
FAST REACTORS
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FINITE ELEMENT METHOD
LIQUID METAL COOLED REACTORS
MATHEMATICAL MODELS
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