Seismic Response of Structures with Variable Friction Pendulum System

2009 ◽  
Vol 13 (2) ◽  
pp. 193-216 ◽  
Author(s):  
V. R. Panchal ◽  
R. S. Jangid
Keyword(s):  
Seismic Response ◽  
Pendulum System ◽  
Variable Friction ◽  
Friction Pendulum ◽  
Friction Pendulum System

The Seismic Response Analysis of LNG Storage Tank Isolated by Multiple Friction Pendulum System

2011 ◽  
Author(s):  
Dagen Weng ◽  
Ruifu Zhang ◽  
Xiaosong Ren
Keyword(s):  
Seismic Response ◽  
Element Model ◽  
Dominant Frequency ◽  
Response Analysis ◽  
Isolation System ◽  
Pendulum System ◽  
System Data ◽  
Lng Tank ◽  
Friction Pendulum ◽  
Friction Pendulum System

The seismic response of extra-large Liquefied Natural Gas (LNG) tank isolated vertically by multiple friction pendulum system (MFPS) is analyzed. The fundamental frequency of the extra-large LNG tank is usually the range of dominant frequency of most earthquake ground motions. It is an effective way to decrease the response for an isolation system being used for extra-large LNG storage tanks under the strong earthquake. However, it is rather difficult to implement in practice using common bearings because of low temperature, soft site and other severe environment factors. The extra-large LNG tank isolated by MFPS is presented in this study to solve these problems. MFPS is appropriate for large displacements induced by earthquakes with long predominant periods. A simplified finite element model by Malhotra and Dunkerly methods is used to judge the utility of the isolation system. Data reported and statistically sorted include pile shear, wave height, impulsive acceleration, convective acceleration and outer tank acceleration. The results show that the isolation system has excellent adaptability for different liquid levels and is very effective to control seismic response of the extra-large LNG tank.

scholarly journals Seismic Isolation of Building-Equipment System Using Modified Variable Friction Pendulum System

2019 ◽  
Vol 7 (1) ◽  
Author(s):  
Darshak Patel ◽  
V. R. Panchal ◽  
Maulik Patel
Keyword(s):  
Seismic Isolation ◽  
Linear Acceleration ◽  
Pendulum System ◽  
Variable Friction ◽  
Acceleration Method ◽  
Friction Pendulum ◽  
The Comparative Study ◽  
Recoverable Energy ◽  
Equipment System ◽  
Friction Pendulum System

In this study, building-equipment system with Modified Variable Friction Pendulum System (MVFPS) is investigated under different earthquake ground excitations. Earthquake response of building-equipment system isolated with MVFPS is compared with Variable Friction Pendulum System (VFPS) and Friction Pendulum System (FPS) in order to find efficiency of MVFPS. Newmark’s linear acceleration method is used for solving governing equation of motion for building-equipment system. In this investigation, different storey buildings are considered. It is observed that MVFPS is more efficient in reducing the recoverable energy than FPS, but less efficient than VFPS. From the comparative study, it is found that FPS shows robust performance in comparison to MVFPS and VFPS in reducing equipment acceleration and displacement.

Sign in / Sign up

Export Citation Format

Share Document