... The Umverstty of Texas at Austm Austin, Texas, USA Abstract It has been recognized for some time that sinusoidal oscillatory flow experiments generate hydrodynamic force coefficients larger than those measured in a random sea environment. The present study investigates forces induced on cylinders by random...

... on a circular cylinder subjected to wave action consists of a drag as well as an inertia component. It is assumed that the total wave force per unit length on a fixed vertical cylinder of the diameter D at position r = (XI,X2,X3) at the time t can be estimated by using Morison's equation as, (Sarpkaya...

... forces ignores possible hydrodynamic inter- action between the cylindrical members, 2.2 Mass Matrix The mass matrix M consists of the structural mass matrix m and an added mass matrix a. The added mass of the sub- merged portion of an arbitrarily inclined cylinder can be ex- pressed in terms...

... with the experimental ones, coming from a deal of lab pendulum tests. The said tests have been performed both on single and on coupled cylinders, with particular care for the overall configuration cases and possibilities. Starting from the 1st case of square cylinders, the study has been after- wards generalized...

...-affected zone near the stiffeners. It was found that ring stiffened shells are more susceptible to fracture than similar shells with uniform thickness. Keywords: Ring stiffened cylinders, Plastic deformation, Maximum strain. 1. Introduction The objective of this study is to extend the plastic analysis...

... are partly based on long-established research data, obtained in steady flow past smooth cylinders, are partly historical and partly a matter of convenience., The situation is known to be very much more complicated than this: the drag coefficient really depends on many different parameters. The surface...

... VERTICAL CYLINDER AT LOW KEULEGAN·CARPENTER NUMBERS N Srlmvasan, A S J Swamldas and J S Pawlowski Faculty of Engmeermg & Applied SCIence Memorial Umverslty of Newfoundland St John's. Newfoundland. Canada ABSTRACT This paper presents results of a series of experiments con- ducted on a 0.3m diameter fixed...

... of the inflatable conduit seal. 2. Verify proper sealing performance of the conduit seal. 249 3. Justify adequate fatigue and wear resistance for 30 years service. Test Set Up The conduit seal test rig is shown in Figures 9 and 10. Two prototype conduit seals were bonded to a central cylinder which was placed...

... acting on weakly buoyant pipelines under tow. Experiments have been made at a scale of about 1/13 in a wave flume, of a prototype pipeline of diameter D = 0.8 m. Unfortunately the prototype length of the test cylinder was only about 70 m and the model was therefore moving appreciably in waves, even...