... analytical method based on Bessel Fourier's series and separation of variables, the governing partial differential equations are derived. A formulation is given for the displacements, electric potential, thermal stresses, and electric displacements resulting from prescribed the general form of thermal...

...) in the tank wall and bottom plate. A factor named “ C ” is used for defining the ratio of actual expansion against free expansion of the tank. Such partial expansion causes significant thermal stresses. API uses these stresses to estimate the low cycle fatigue life of the tanks. At present, a range of C...

...Behrooz Farshi; Jalal Bidabadi Gas turbine disks are subject to mechanical stresses due to centrifugal forces exerted by the blades, as well as thermal stresses due to high temperature gradient. High stresses in the presence of elevated temperatures cause the rotating disk material to undergo...

... Class 2/3 nuclear piping is limited to 800F, and therefore, creep is not a concern. creep design engineering fatigue nuclear power stations pipes thermal expansion thermal stresses 13 07 2007 16 12 2009 31 01 2011 31 01 2011 2011 American Society...

...Toshimichi Fukuoka; Masataka Nomura; Keiichi Shino A bolted joint is widely used for the structures and machines subjected to thermal load, such as pressure vessels, internal combustion engines, brake disks, etc. In order to accurately evaluate the thermal stresses thus produced, the effect...

... and moments. The reaction moments will be solely resisted by the threaded T-joint (point A) due to the nature of the wall supports. Therefore, it is anticipated that the branch length plays a significant role in dictating the system flexibility and the resulting thermal stresses. The riser pipe...

... solution, the thermal stress response of the thick walled cylinder was solved. The time dependent variations of the temperature field—thermal stress field—were discussed, and the effect of cylinder radius ratio on the problem was given. The exploration in this paper will lay a theoretical reference...

...M. Jabbari; A. H. Mohazzab; A. Bahtui This paper presents the analytical solution of one-dimensional mechanical and thermal stresses for a hollow cylinder made of functionally graded material. The material properties vary continuously across the thickness, according to the power functions of radial...

... connected to the cold leg pipe through which the hot main coolant flows. To prevent and relieve excessive transient thermal stress in the nozzle wall, which may be caused by the direct contact of cold water in the SI operation mode, a thermal sleeve in the shape of thin wall cylinder is set in the nozzle...

... fracture toughness steel tensile strength thermal stresses thin wall structures quasistatic and low-cycle fracture (crack growth) thermal (dilatational) loading moving load In fracture mechanics problems, traditionally, a mechanical loading is considered. If the load value exceeds some...

...Wang Ze-jun; Jing Hong-yang For the purpose of finding a way to control effectively the residual thermal stresses induced by local heat treatment on spherical vessels, a thermal tracing program is developed successfully based on the transient thermal analysis and controlling method of average...

...Hironori Tohmyoh; Masumi Saka; Yuichi Kondo This paper describes the “thermal opening technique” for enhancing the ultrasonic response of a tightly closed crack. In this approach, thermal stress is generated by cooling the part locally to reduce the crack closure stress in stainless steel plate...

...A. E. Segall; R. Akarapu Approximate solutions were derived for the transient through steady-state thermal-stress fields developed in thick-walled vessels subjected to a potentially arbitrary thermal shock. In order to accomplish this, Duhamel’s integral was first used to relate the arbitrary...

... and/or flux data is ill-posed and inherently sensitive to errors in the data. As a result, the inverse route is rarely used to determine thermal stresses. Moreover, most analytical solutions to the inverse problem rely on a host of assumptions that usually restrict their utility to time frames before...

...-plastic analysis, and thermal stress ratchet. Issues that are explored are separating primary and secondary stresses in finite element analyses, material ductility requirements, and the meaning of the fatigue penalty factor. Since 3 S m is equivalent to 2 S y the design...

... of flanges and a joint with a cover plate. The analytical models are validated and verified by comparison to finite element results. 06 07 2004 29 05 2005 gaskets fasteners flanges thermoelasticity thermal stresses finite element analysis Flange designs have been the subject...

...Vishnu Verma; A. K. Ghosh; H. S. Kushwaha The ball tank of the research reactor CIRUS is exposed to solar radiation. The ambient temperature undergoes seasonal and diurnal variation. The resulting thermal stress could be significant for the large structure. The temperature distribution has been...

... thicknesses, resulting in lower throughwall thermal stresses during transient events and lower material and pipe support costs. During the past two decades, Grade 91 has been used successfully in fossil power plants. However, this alloy has had some incidents of premature failures. Case histories discuss...

...A. E. Segall, Mem. ASME, Associate Professor A closed-form axisymmetric solution was derived for the transient thermal-stress fields developed in thick-walled tubes subjected to an arbitrary thermal loading on the internal surface with convection to the surrounding external environment...

...Jong Chull Jo, Mem. ASME; Young Hwan Choi; Seok Ki Choi This paper addresses three-dimensional numerical analyses of the unsteady conjugate heat transfer and thermal stress for a PWR pressurizer surge line pipe with a finite wall thickness, subjected to internally thermal stratification. A primary...