Response of Large Scale Oil Storage Tanks Subjected to Wind Load
This work was to study the response of large scale oil storage tanks subjected to wind load.Firstly,the wind pressure model and the finite element model of the tank were introduced.Then,modal analysis was conducted.Finally,wind responses of the tank under the static and dynamic wind pressure models were studied.The results show that the vibration is the mutil-wave vibration,which is the superposition of the circumferential and vertical vibrations.For the tank under the static wind pressure,maximum displacement occurs on the tank wall close to the top edge,while maximum stress happens on the joint between the bottom plate and the tank wall.For the tank under the dynamic wind pressure,there is a time delay between the peak response(e.g.displacement and stress) and the maximum load.
The broad range of viewpoints with respect to the effects of changing oil prices on U.S. stock markets leave equity portfolio managers puzzled about how changing oil prices are going to affect their portfolios and how and if they should try to manage oil price risk. This article seeks to help equity portfolio managers to better understand and manage oil price risk by studying and estimating the relationship between oil prices and sectors of the U.S. stock market, across several periods of time (not just during oil price shocks). Additionally, the authors test for and discover an exchange-traded fund (ETF) investment security that U.S. equity portfolio managers could use for managing oil price risk.