Finite element simulation of pipe dynamic response
- G.C. Slagis Associates, Walnut Creek, CA (United States)
- PMB Engineering Inc., San Francisco, CA (United States)
Nonlinear finite element dynamic analyses of the response of a pipe span to controlled-displacement, sinusoidal vibration have been performed. The objective of this preliminary study is to compare strain and acceleration response data to those generated by Beaney in the Berkeley Nuclear Laboratories experiments. Results for an unpressurized, 5 Hz, carbon steel pipe are in good agreement with the experiments. Hence, it appears that analytical simulation will be useful to assess seismic margins. Recommendations for additional studies are provided. The analyses confirm the test results--dynamic response is greatly attenuated by material plasticity. Analytical strains and accelerations are about 30% higher than test data. There are several possible explanations for the differences. To assess the effect of frequency on response, the length of the pipe span was increased. Analysis of the longer, 2 Hz, pipe span shows significantly greater cyclic strains than the 5 Hz span at the same input excitation levels.
- OSTI ID:
- 404336
- Report Number(s):
- CONF-960706--; ISBN 0-7918-1787-3
- Country of Publication:
- United States
- Language:
- English
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