Y.V.Kadam et al Int. Journal of Engineering Research and Applications www.ijera.com ISSN : 2248-9622, Vol. 4, Issue 7( Version 2), July 2014, pp.196-200 www.ijera.com 196 | Page “Analysis and Weight Optimization of Split Dish Reactor Using Thermo-Structural Coupled FEA” Yogesh V. Kadam*,S.C.Shilwant** Vinaay Patil*** *,** Mechanical Engineering Dept., Sinhgad academy of engineering, Kondhwa., Pune, India. ***FEA (Finite Element Analysis) Dept., Vaftsy CAE, Pune, India Abstract— A vertical split dish reactor with leg supports is modeled using ansys workbench. Thereafter, external loads, such as self –weight, internal pressure and temperature are applied to the model. Pressure and temperature has been continuously a concern which may lead to structural failure if the resulting stresses are severe and excessive. It is a significant study which requires in-depth investigation to understand the structural characteristics. This paper presents and focuses on some Finite Element (FE) analysis of a split dish reactor will be carried out and maximum stresses in the structure will be determined. Keywords-FEA;Modal FEA; Non-Linear, Dish Reactor. Nomanclatures- T= Minimum required thickness (in.) P = Design pressure (psi) R = Inside radius (in.) S = Allowable stress (psi) D = Inside diameter (in.) E = Weld joint efficiency factor, determined by joint location and degree of examination. [E=1 for full radiographic examination] I. INTRODUCTION Industrial pressure vessels are usually structures with complex geometry containing numerous geometrical discontinuities and are often required to perform under complex loading conditions (internal pressure, external forces, thermal loads, etc.). The design and manufacturing of these products are governed by mandatory national standards, codes and guidelines that ensure high safety performance. Most pressure vessel design codes (e.g. EN13445, BS550, ASME Div III) assume a membrane stress state condition for the determination of the minimum shell thickness and large safety factors at areas of geometric discontinuities such as openings, change of curvatures, nozzle intersections, thickness reduction, etc. It should be noted that large safety factors lead to increasing the material thickness, while safety is not necessarily increased; recall that fracture toughness decreases with increasing thickness, and stress corrosion cracking at components operating in corrosive environments is expected to be higher in thicker parts. During the last three decades considerable advances have been made in the applications of numerical techniques to analyse pressure vessel problems. Among the numerical procedures, the finite element methods (FEMs) are most frequently used. In the design/fabrication of pressure vessels, geometric discontinuity (abrupt change in radius of curvature due to misalignment and angular distortion, and/or thickness of the shell) induces additional bending stress which may alter the stress distribution at the regions of the discontinuity. Determination of discontinuity stresses is an important problem. Finite element analysis (FEA) utilizing the commercial software packages (viz., ANSYS, NISA, MARC, etc.) will be more appropriate for shell structures involving elements of arbitrary thickness and curvature to obtain the stress distribution around discontinuities. In this paper, first, the process and model is explained in a detailed manner. Afterwards, the results of the analysis are presented. Finally, the main conclusions of the investigation are drawn. II. BRIEF OVERVIEW OF SOME RESEARCH J.Y. Zheng et al. [1] has done the investigation on bursting pressure of flat steel ribbon wound pressure vessels. The flat steel ribbon wound pressure vessel, invented by Professor Zhu in the People’s Republic of China, has shown lots of advantages; namely, flexible design, convenient manufacture, safe use, wide feasibility and easy inspection. The material and manufacturing cost of using the flat ribbon wound technology may be 40% reduced from other methods in use for constructing large pressure vessels. The flat steel ribbon wound pressure vessel may burst either in the circumferential direction or in the longitudinal RESEARCH ARTICLE OPEN ACCESS