Tan, Mingyi, Xiong, Ye Ping and Xing, Jing Tang
Dynamic response analysis of an onshore LNG-storage tank interaction system sub-ject to impact or earthquake loads
In Proceedings of the Sixteenth International Congress on Sound and Vibration - ICSV16.
International Institute of Acoustics and Vibration, (IIAV). 8 pp, .
Full text not available from this repository.
Liquefied Natural Gas (LNG) has become an increasingly important element for energy sup-plies and LNG terminals are planned and built to enable the import and export of LNG from producers to consumers. There are concerns from the communities near LNG terminals about the safety and security of onshore LNG storage tanks under different loads. This paper pre-sents a numerical investigation of the dynamic behaviour of an LNG-tank interaction system subject to impact and earthquake to assess its safety. The coupling system is modelled by a mixed finite element approach where pressure and shell elements are adopted for LNG and the tank wall respectively. The natural characteristics of the dry tank, LNG sloshing in the rigid tank and the coupling system are calculated. The displacement / stress responses of the system are obtained. In the analysis, the multi-layered tank wall is idealised using shell ele-ments with equivalent mechanical properties. An available earthquake data and empirical formula for the impact loads are used. The influence of the fluid-structure interactions is studied for various filling levels of the tank and the different loading conditions. Some con-clusions for engineering applications are drawn from the outcome of the simulations.
Actions (login required)