Author
M. Hamada
Bio: M. Hamada is an academic researcher from Osaka University. The author has contributed to research in topics: Bellows. The author has an hindex of 1, co-authored 1 publications receiving 4 citations.
Topics: Bellows
Papers
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6 citations
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TL;DR: In this paper, the difference between bellows and polished bar fatigue behavior is attributed to this strain concentration, and it is shown that fatigue life of bellows can be better predicted by partitioning the bellows fatigue data based on a geometry parameter.
39 citations
TL;DR: In this paper, a combination of hydroforming and roll-forming processes is examined to enhance the fatigue life of steel bellows for low-pressure, low-temperature applications.
11 citations
TL;DR: In this article, guidelines for design of flanged and flued type (thick wall) expansion bellows available in international codes and standards including ASME VIII-1 and 2, EN-13445, and TEMA and EJMA codes are presented.
Abstract:
Differential longitudinal thermal expansion between the shell and the tube bundle is a well-known problem in fixed tubesheet heat exchanger design. An expansion bellows provide flexibility for thermal expansion and also function as a pressure retaining part. In this paper, guidelines for design of flanged and flued type (thick wall) expansion bellows available in international codes and standards including ASME VIII-1 and 2, EN-13445, and TEMA and EJMA codes are presented. These codes and standards are compared in terms of information available for thick wall expansion bellows design with regard to condition of applicability of design formula, spring rate determination, parameter to define the initial geometry, stress determination, and fatigue evaluation. Inherent limitations of these codes with respect to expansion bellows design, research gape, and recommendations for effective design are also presented in this paper. Brief history and information provided in various codes and standards related to unreinforced thin wall expansion bellows (bellows expansion joints) are also presented to understand evaluation of expansion bellows design.
6 citations
TL;DR: The applicability of the following four design formulas of the single-ply unreinforced U-shaped bellows is examined: (1) Kellogg`s formula, (2) formula of EJMA, (3) formula by Hamada and Takezono, (4) formula as presented in this article.
Abstract: The applicability of the following four design formulas of the single-ply unreinforced U-shaped bellows is examined: (1) Kellogg`s formula, (2) formula of EJMA, (3) formula by Hamada and Takezono, (4) formula by Hamada et al. Examination is carried out by comparing results of the design stress and the fatigue life estimated by these four formulas with each other and with experimental data.
3 citations