On the seismic behavior of unanchored liquid containers
- Aristotle Univ., Thessaloniki (Greece). Dept. of Mechanical Engineering
- Arizona State Univ., Tempe, AZ (United States). Dept. of Mechanical and Aerospace Engineering
This work presents a combined analytical/numerical methodology, predicting the behavior of unanchored liquid storage tanks subjected to seismic excitation. First the dynamic response of the system and the resulting hydrodynamic loads are determined by employing a simplified dynamic model. According to this model, the base uplift of the container is represented by an equivalent nonlinear rotational spring, placed between the foundation and the base plate of the tank. The characteristics of this spring are determined from static considerations, by applying standard finite element methodologies.taking into account the form of the uplift spring stiffness, comprehensive parametric studies on the dynamics of unanchored liquid containers are first performed, in a systematic way. The results of these studies provide valuable insight into the role of the system parameters on its response. Once the dynamic loads are determined, a stress and buckling analysis can be performed, by employing finite element modeling again. The validity of the findings of the present work is checked through comparisons with experimental results.
- Sponsoring Organization:
- USDOE
- OSTI ID:
- 390209
- Journal Information:
- Journal of Pressure Vessel Technology, Journal Name: Journal of Pressure Vessel Technology Journal Issue: 3 Vol. 118; ISSN JPVTAS; ISSN 0094-9930
- Country of Publication:
- United States
- Language:
- English
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