Journal of Pressure Vessel Technology: Recent submissions
Now showing items 2961-2980 of 4506
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Stress Intensity, Stress Concentration, and Fatigue Crack Growth Along Evacuator Holes of Pressurized, Autofrettaged Tubes
(The American Society of Mechanical Engineers (ASME), 1996)The geometry analyzed consists of a thick-walled cylinder having a small-diameter evacuator hole penetrating radially through the wall. The loading involves pressure acting on the i.d. of the ... -
Bending Stresses at Longitudinal Weld Joints of Pressurized Cylindrical Shells due to Angular Distortion
(The American Society of Mechanical Engineers (ASME), 1996)This article presents a simple second-order theory for the determination of bending stresses which arise at the longitudinal welded joint of a pressurized, cylindrical shell subject to peaking, ... -
Three-Dimensional Interaction Effects in an Internally Multicracked Pressurized Thick-Walled Cylinder— Part I: Radial Crack Arrays
(The American Society of Mechanical Engineers (ASME), 1996)Under certain conditions, numerous internal surface cracks develop in pressurized thick-walled cylinders, both in the radial and longitudinal directions. For fatigue life assessment of such vessels, ... -
Further Investigations in Tubesheet Design for a U-Tube Heat Exchanger
(The American Society of Mechanical Engineers (ASME), 1996)A tubesheet for U-tubesheet heat exchanger is analyzed as an equivalent solid circular plate having complete isotropy in the plane of the tubesheet with usual effective elastic constants. However, ... -
Reliability Factors and Tightness of Tube-to-Tubesheet Joints
(The American Society of Mechanical Engineers (ASME), 1996)The main purpose of this paper is to provide an applicable method to establish reliability factors for expanded tube-to-tubesheet joints. The paper also reports on the results of a preliminary ... -
Biaxial Ratcheting and Cyclic Plasticity for Bree-Type Loading—Part I: Finite Element Analysis
(The American Society of Mechanical Engineers (ASME), 1996)The Bree diagram has been incorporated in the ASME B&PV Code in the elevated temperature Code Case N47 as a design approach for limiting strain accumulation in cylinders subjected to cyclic ... -
Analysis of Axial Cracks in Hollow Cylinders Subjected to Thermal Shock by Using the Thermal Weight Function Method
(The American Society of Mechanical Engineers (ASME), 1996)In this study, stress intensity factors for axial cracks in hollow cylinders subjected to thermal shock are determined by using the thermal weight function method. The thermal weight function ... -
Impacting Effects of Seismic Loading in Feeder Pipes of PHWR Power Plants
(The American Society of Mechanical Engineers (ASME), 1996)The core of a pressurized heavy water reactor (PHWR) consists of a large number of fuel channels. These fuel channels are connected to the feeder pipes through which the heavy water flows ... -
Three-Dimensional Interaction Effects in an Internally Multicracked Pressurized Thick-Walled Cylinder—Part II: Longitudinal Coplanar Crack Arrays
(The American Society of Mechanical Engineers (ASME), 1996)In the first part of this paper, the interaction effects among many radial, internal, semi-circular, and semi-elliptical cracks in a pressurized, thick-walled vessel were quantified. In the present ... -
A Simple Estimating Method for Reduction of Welding Residual Stresses in Thick Welded Joint From Stress-Relief Annealing—Part I: Development of the Analytical Method for Relaxation Tests and Its Applicability
(The American Society of Mechanical Engineers (ASME), 1996)Stress-relief annealing (SR treatment) is often applied to relieve welding residual stresses in the fabrication process of pressure vessels, etc. This study aims at development of an efficient ... -
Use of a Viscoelastic Model for the Seismic Response of Base-Isolated Buildings
(The American Society of Mechanical Engineers (ASME), 1996)Due to recent developments in elastomer technology, seismic isolation using elastomer bearings is rapidly becoming an acceptable design tool to enhance structural seismic margins and to protect ... -
Simulative Analyses of Dynamic Buckling of Bellows
(The American Society of Mechanical Engineers (ASME), 1996)Simulative analyses of dynamic buckling have been performed for bellows of piping expansion joints for FBR plants using an explicit finite element computer code “RADIOSS.” Deformation modes were ... -
Biaxial Ratcheting and Cyclic Plasticity for Bree-Type Loading—Part II: Comparison Between Finite Element Analysis and Theory
(The American Society of Mechanical Engineers (ASME), 1996)In Part I of this two part paper (Ng and Nadarajah, 1996), the results of an extensive program of finite element analyses were described. The problem being considered is the phenomenon of ... -
Technical Basis for the Extension of ASME Code Case N-494 for Assessment of Austenitic Piping
(The American Society of Mechanical Engineers (ASME), 1996)In 1990, the ASME Boiler and Pressure Vessel Code for Nuclear Components approved Code Case N-494 as an alternative procedure for evaluating flaws in light water reactor (LWR) ferritic piping. ... -
Random Excitation Forces in Tube Bundles Subjected to Two-Phase Cross-Flow
(The American Society of Mechanical Engineers (ASME), 1996)Data from two experimental programs have been analyzed to determine the characteristics of the random excitation forces associated with two-phase cross-flow in tube bundles. Large-scale air-water ... -
A Reinforcement Design Method Based on Analysis of Large Openings in Cylindrical Pressure Vessels
(The American Society of Mechanical Engineers (ASME), 1996)The analytical solution is given for two orthogonally intersecting cylindrical shells with large diameter ratio d/D subjected to internal pressure. The modified Morley equation is used for the ... -
Generation and Use of Simplified Uplift Shape Functions in Unanchored Cylindrical Tanks
(The American Society of Mechanical Engineers (ASME), 1996)This paper presents a simplified mathematical model for modeling the flexible bottom plate in an unanchored cylindrical liquid storage tank partially uplifted under the static tilt condition. In ... -
Detection and Sizing of Defects in Control Rod Drive Mechanism Penetrations Using Eddy Current and Ultrasonics
(The American Society of Mechanical Engineers (ASME), 1996)Over the last two years, concern has been generated about the capabilities of performing nondestructive evaluation (NDE) of the closure-head penetrations in nuclear-reactor pressure vessels. These ... -
Transient Pressure Analysis in Piping Networks due to Valve Closing and Outlet Pressure Pulsation
(The American Society of Mechanical Engineers (ASME), 1996)This paper investigates the transient flow and pressure developments in a piping network due to design parametric and operational variations. Numerical simulations using both the method of ... -
Optimum Support Arrangement of Piping Systems Using Genetic Algorithm
(The American Society of Mechanical Engineers (ASME), 1996)The support arrangement is one of the important factors in the design of piping systems. Much time is required to decide the arrangement of the supports. We applied a genetic algorithm to ...