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Okawa, Yoshinao; Akutsu, Yoichi; Suzuki, Hideyuki; *; *; *; *
Nihon Kenchiku Gakkai Taikai Gakujutsu Koen Kogaishu, 0, p.1047 - 1048, 1995/00
no abstracts in English
; Kawasaki, Hirotsugu; ; ; Tsukimori, Kazuyuki; ; Isozaki, Kazunori
PNC TN9410 92-131, 90 Pages, 1992/05
This report describes the summary of 'A validation Test Planning of Piping Bellows Expansion Joint in Experimental FBR "JOYO" '. The planning followed 'A Feasibility Study of Piping Bellows Expansion Joint' which had been completed at oarai Engineering Center of PNC. The planning of validation test is one activity of the First Sub-Committee of the PROFIT Committee. Under the First Sub-Committee, a working group was organized for constructing the varidation test program. The working group had considered meanings/objectives, methods, schedules, expected results and expenses of validation test using experimental FBR 'JOYO'. The output of the working group presented in this repot was reported to and deliberated in the First Sub-Committee, the PROFIT Committee and a Technical Stearing Comittee in Oarai Engineering Center. The last choice was made by the Technical Stearing Comittee to push forward with the plan.
Tsukimori, Kazuyuki*
PNC TN9410 89-166, 265 Pages, 1989/12
The R&D on the feasibility of the bellows expansion joint, which is one of the cost reduction measures for large scale FBR plants, was conducted from 1983 to 1987. After-wards the synthetic evaluations and examinations are still continued. This report has been written as the companion report to "Simplified Analysis Methods for Bellows Analyses". Concerning the following five items, the evaluation methods, which have been developed in order to utilize in establishing design rules for bellows, are explained. (1)Column buckling of bellows under internal pressure. (2)Creep buckling of bellows under internal pressure. (3)Evaluation of strain amplification of bellows generated by the irregularity of the dimenssions among convolutions in elastic-plastic region. (4)Elastic follow-up in the piping system with bellows expansion joints. (5)Elastic follow-up among convolutions of bellows.
Desigh Code W/G for Piping Bellows Expansion Joints*; *
PNC TN9410 88-180, 180 Pages, 1988/12
"Working Group for System Design of Piping Bellows Expansion Joints" is an organization which was established for the purpose of developing piping bellows applicable to the primary cooling piping system of FBR by performing total evaluation on design, manufacture, inspection technology, material, reliability and safety. Research and investigation concerning the piping bellows in general have been carried out every year by this working group composed of PNC staff since the working group was organized under "FBR Piping Bellows Expansion Joints Section Meeting" in 1983. The outline of the works performed by the group in 1988 and 1989 is as follows. (1)Investigation for the design of FBR Demonstration Plant. (2)Concept on arrangement of components and piping of primary coolant system. (3)Investigation for arrangement of components and piping in containment vessel of diameter 45m. Design using arrangement of components and piping with bellows in containment vessel of diameter 45m was proposed on the basis of reserch and investigation concerning the piping bellows carried out in l988 and 1989. We are planning to make effort to reduce material weight and volume by farther investigating and analysing the proposed design.
Tsukimori, Kazuyuki*; Iwata, Koji; *; *
PNC TN9410 88-136, 69 Pages, 1988/08
PNC has proceeded the feasibility study in respect of the bellows expansion joint for FBR pipings because the expansion point is an effective measure to rationaliz evarious piping systems. Essencially bellows should be designed not to be subjected to torsional loads and usually bellows is protected by hardware not to move in the direction of torsion. Actually, however, there are some sources of torsional deformation, e.g. the clearance of bearing structure, the deformation of hardware etc. Therefore it must be available to limit the torsional displacement of bellows clearly in view of improvement of reliability in design and fabrication. The torsional buckling behavior of bellows was investigated with both theory and numerical analysis. The new element, 3-mode axisy㎜etric shell harmonic series element (NAXSHEL3) which was developed in the FINAS fimite element computer progran, was used for the buckling eigen valve analysis. The numerical solutions corresponded to the theory very well in a wide range of dimensions and number of convolutions. Besed on these results the framework of the design rule related to the torsion of bellows was drawn.
*; *; Nakanishi, Seiji; *
PNC TN9410 88-114, 239 Pages, 1988/08
The reduction of piping length of secondary main heat transport system is considered as an effective measure for the reduction of the construction cost of LMFBRs because of the reduction of piping materials including its attachments, the auxiliary system such as electric power supply system and air-conditioning system, etc., and building volume. The stress analysis of the bellows and normal piping system was performed under the same loading conditions, and a comparison was made to clarify the cost reduction effect between the both piping systems. In this study a concept of 1000MWe loop-type LMFBR plant designed in the "key Technological Design Study (II)" in 1985 was considered as a reference plant. Piping material of the normal piping system is 2.25Cr-1Mo steel. On the other hand, the piping and bellows joints are made of SUS304 and SUS316, respectively, in the bellows piping system, and the gimbal type bellows which absorb thermal expansion of the piping by their rotational angle deflection were used. It is necessary to reduce reasonably the number of the bellows joints from a viewpoints of the cost reduction of bellows piping system. For this purpose, the preliminary analysis of the piping due to thermal expansion at normal condition was performed to survey the optimum piping system arrangement considering the number and location of the bellows joints in the piping. And then, the detailed analysis of the optimized one was carried out. The analytical results were evaluated by using the "Structural Design Guide of Class I Components for Elevated Temperature Service(BDS)" and the structural integrity of the piping were confirmed. The bellows joints according with the design and arrangement conditions of the bellows piping system were selected by the screening code. The results gained from the analysis of bellows joints were evaluated by using the "Structural Design Guide for Class I piping Bellows Expansion Joints of FBR for Elevated Temperature ...
*; *; Imazu, Akira
PNC TN9410 88-080, 132 Pages, 1988/06
A series of analytical investigations were made into the seismic response characteristics of bellows, as a part of work aiming at establishing reliable seismic design and analysis methodologies for bellows piping systems. Simplified calculation methods were developed for the axial and lateral seismic response of bellows, in which bellows is modeled as an equivalent rod or beam, respectively. Using these methods, spectral response analyses were performed on the bellows with the number of convolutions as a parameter, and the results were compared with detailed FEM analysis by FINAS. Analyses were also made to compare with available vibration test data. The simplified methods were found to give fairly good results when compared with those by FINAS, and relatively conservative results when compared with experimental data. Through this study, simplified methods were established to evaluate the seismic response and stress of bellows with sufficient accuracy for practical design use.
*; *; Tsukimori, Kazuyuki*
PNC TN9410 87-073, 206 Pages, 1987/03
The development of piping bellows as one of the cost reduction measures for Large FBR plants has been conducted in the Power Reactor and Nuclear Fuel Development Corporation since 1984. Fatigue and creep-fatigue strength evaluation is an important issue in practical application of bellows to the primary piping systems of FBR. This is the first report of a series of the fatigue and creep-fatigue tests for 42 inches diameter bellows. Fatigue tests described in this report were conducted on type 316 Stainless steel U-shaped bellows with seven convolutions at room temperature and 600 
C. Through the present tests and analytical studies, the following conclusions were obtained. (1)Many of fatigue cracks distribute on the root surfaces near the both sides of bellows and they are almost intergranular fracture. (2)Fundamental characteristics of bellows in elastic region such as spring and strain response can be properly estimated by EJMA standards and FEM analysis. (3)Fatigue life of bellows can be properly estimated by material based fatigue life prediction using measured strains of bellows. (4)Maximum actual strain ranges can be reasonably estimated by using the elastic nominal strain range multiplied by the inelastic amplification factor per convolution (f
f
) and the factor (f
) caused by stiffness fluctuation between convolutions. The effectiveness of the practical evaluation of strain range and fatigue life of bellows has been validated through this study.
*; Tsukimori, Kazuyuki*; Iwata, Koji
PNC TN9410 87-053, 74 Pages, 1987/03
PNC is promoting the feasibility study of piping bellows expansion joints as one of the measures that rationalize large scale FBR plants, and the fatigue and creep fatigue test of bellows is one of the R&D tests. This report describes the fatigue test and analysis result of the bellows fundamental unit model (corrugated plates) at room temperature. The following is the main result. (1) The fatigue life data of the corrugated plates favorably coincide with the material fatigue curve. (2) The strain response of the corrugated plates can be satisfactorily analized by both theoretical and numerical method. (3) The relationship between the corrugated plate and the bellows (42 inches in diameter) was examined by using the shallow beam theory, the standards of EJMA and unmerical analyses (FEM). As the result there was no remarkable difference between them. (4) The degree of the strain concentration by plasticity in 1 convolution is estimated conservatively due to the factor Ke' (q = 2.0) which is bounded by test and analysis results.
; Yamamoto, Masahiro; ; *; *; *; *
JAERI-M 84-034, 54 Pages, 1984/03
no abstracts in English
; Yamamoto, Masahiro; ; *; *; *
JAERI-M 83-077, 28 Pages, 1983/06
no abstracts in English
; Yamamoto, Masahiro; ; *; *; *; *
JAERI-M 82-205, 42 Pages, 1982/12
no abstracts in English
; ; Yamamoto, Masahiro;
JAERI-M 8017, 67 Pages, 1978/12
no abstracts in English
Yamamoto, Masahiro; ; Nakamura, H.; ; *; ; ; *; *; *; et al.
Nihon Genshiryoku Gakkai-Shi, 20(4), p.258 - 272, 1978/04
Times Cited Count：6no abstracts in English
*; ; ; Yamamoto, Masahiro; ; *; *
JAERI-M 6822, 48 Pages, 1976/12
no abstracts in English
;
JAERI-M 5773, 56 Pages, 1974/07
no abstracts in English
;
Nihon Kikai Gakkai Kanto Shibu Ibaraki Koen Rombunshu, 203, p.185 - 188, 1969/00
no abstracts in English
