...G. E. Otto Widera pressure vessels vibrations I extend my very best wishes to you for good health and happiness in 2012. We look forward to presenting three special topic issues this year. The April 2012 issue will feature papers on ASME Codes and Standards. Papers from the 2011 Gun Tube...

... at the line of action of the transverse excitation. 13 05 2011 15 08 2011 17 08 2011 25 01 2012 25 01 2012 fasteners mathematical analysis vibrations self-loosening countersunk fasteners conical angle thread pitch In many applications, it is critically...

...Atef Mohany; Victor P. Janzen; Paul Feenstra; Shari King This paper describes a test program that was developed to measure the dynamic response of a bundle of steam generator U-tubes with anti-vibration bar (AVB) supports, subjected to Freon two-phase cross-flow. The tube bundle geometry is similar...

... high vibrational bending stresses and corrosive agents. It was shown that the role of a vibrational bending stress due to high velocity of input steam is very impressive. The important point in this study was the branching of corrosion fatigue cracks during their growth in presence of NaOH and chloride...

...G. Ricciardi; M. J. Pettigrew; N. W. Mureithi This paper presents the results of tests on the vibration of a normal triangular tube bundle subjected to air–water cross-flow. The pitch-to-diameter ratio of the bundle is 1.5, and the tube diameter is 38 mm. The tubes were preferentially flexible...

... wall cylindrical vessel with semielliptical ends. Each time an explosive charge is fired in the vessel, that vessel is submitted to a number of deformation cycles. A series of strain gauges measures the deformation of the vessel walls. Experimental peak strains and vibration frequency can be compared...

... contact forces and motions at the gap-supports. Actually, even if our identifications are not immaculate at the present time, they remain nevertheless quite usable. Rogers , R. J. , and Pick , R. , 1977 , “ Factors Associated With Support Forces Due to Heat Exchanger Tube Vibration Contact...

...Akira Maekawa; Yasutaka Shimizu; Michiaki Suzuki; Katsuhisa Fujita This paper describes the results of vibration tests using a 1/10 reduced scale model of large-scale cylindrical water storage tanks to clarify their dynamic behavior under seismic excitation. The thin sidewall of the tanks is not so...

... gauge integrity is shown in the large RMS amplitudes at reduced velocities below 50. The uncertainty here is recognized in the range of reduced velocities taken for the stability threshold, 50–75. flow instability heat exchangers pipe flow pipes turbulence vibrations vortices wear...

...Njuki W. Mureithi 09 08 2010 09 08 2010 design engineering flow vibrations The ASME-PVP Symposium on Flow-Induced Vibration provides a valuable forum for researchers and engineers in industry to share and discuss new developments in the effort to better understand...

...M. F. Cargnelutti; S. P. C. Belfroid; W. Schiferli Two-phase flow occurs in many situations in industry. Under certain circumstances, it can be a source of flow-induced vibrations. The forces generated can be sufficiently large to affect the performance or efficiency of an industrial device...

...Hugh Goyder The offshore oil and gas industry uses corrugated pipes because of their flexibility. Gas flowing within these pipes interacts with the corrugations and generates noise. This noise is of concern because it is of sufficient amplitude to cause pipework vibration with the threat of fatigue...

... of viscoelastic materials and active control of severe pipe vibrations are considered. This part will be closed by conclusions highlighting resolved and nonresolved controversies reported in literature. The second part will address the problem of fluid-elastic instability in single- and two-phase flows...

... , “ Factors Associated With Support Forces Due to Heat Exchanger Tube Vibration Contact ,” Nucl. Eng. Des. 0029-5493 , 44 , pp. 247 – 253 . 10.1016/0029-5493(77)90031-0 Axisa , F. , Antunes , J. , and Villard , B. , 1988 , “ Overview of Numerical Methods for Predicting Flow-Induced...

... elbow. The bending direction considered in the tests was either of the in-plane bending, out-of-plane bending, or mixed bending of the in-plane and out-of-plane. These models were excited under the same input acceleration until failure occurred. Through these tests, the vibration characteristic...

...M. Utsumi; K. Ishida In a previous paper, a cost-efficient modal analysis method for the vibration of a floating roof coupled with nonlinear sloshing in a circular cylindrical oil storage tank is presented. This method is extended to the case in which the out-of-plane deformation of the roof-deck...

...Samir Ziada The excitation mechanism of acoustic resonances has long been recognized, but the industry continues to be plagued by its undesirable consequences; manifested in severe vibration and noise problems in a wide range of industrial applications. This paper focuses on the nature...

... response stage. It has been reported in our previous study that bending modes may be excited after several cycles of breathing mode vibration, due to the dynamic instability in cylindrical and spherical shells without structural perturbations. The nonlinear modal coupling between the breathing mode...

.... finite element analysis Fourier series partial differential equations pressure vessels shells (structures) tanks (containers) vibrations flat-bottom cylindrical shell tank fluid pressure angular acceleration uplift motion Fourier-cosine expansion velocity potential normalized fluid...

...M. J. Pettigrew; C. E. Taylor This paper presents the results of a test series to study the vibration behavior of a normal triangular tube bundle subjected to two-phase Freon cross flow. A normal triangular tube bundle of pitch over diameter ratio of 1.5 was tested over a broad range of void...