Seismic design provisions of liquid-storage tanks such as API 650 (2007) and Eurocode 8 (1998) are based on a mechanical spring-mass analogy initially developed by Graham and Rodriguez (1952), Jacobsen (1949) and Housner (1963) for rigid tanks and by Haroun and Housner (1982) for flexible tanks.
Time history response of both rigid and flexible tanks having different conditions at the base; fixed and hinged under both horizontal and vertical components of earthquake is obtained using the direct integration method.
The Tu-85 carried 63600 l of fuel in 48 flexible tanks.
Bladder water (chlorinated water stored in flexible plastic tanks in internally displaced person camps) seemed protective (mOR indeterminate, 95% CI 0 0.9), although exposure frequency was limited and a point estimate could not be calculated.
In the present investigations, sloshing vibrational characteristics for ground-supported, flexible, shallow cylindrical tanks are determined by using a more accurate method.
In this paper, a mechanical model is developed for evaluating the seismic response of flexible concrete cylindrical tanks under horizontal ground motion.
One of the things engineers did to compensate for the vehicle's 69 percent rear weight bias was to run the gas tank — a flexible urethane bag instead of a traditional steel fuel tank — through the large central backbone that formed the main section of the chassis.
In the numerical approach, 3D CFD simulations are performed for the arrangement of flexible pipes and oil tank, similar to the experimental conditions.
Two different finite element models corresponding with flexible shallow and tall tank configurations are studied under the effects of longitudinal, transversal and vertical ground motions.
The presented nonlinear system model can provide an important reference for the overall design of the modern spacecraft composed of rigid platform, liquid filled tank and flexible appendage.
