Stress analysis method of U-shaped bellows and its experimental verification

Takatsu, H.; Yamamoto, Masahiro; Shimizu, Masatsugu; Ohta, M.

doi:10.1016/0920-3796(93)90118-2

Cited by 4 publications

(2 citation statements)

References 5 publications

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“…Different authors studied the stress analysis aspects by various assumptions like beam model, orthotropic plate model, plate-cylindrical model, shell model, etc. Most notably, Takastu et al [13] presented an FEM modeling technique for the strain-stress study of the vacuum vessel of code JT-60. They obtained the membrane stresses by the use of transforming equations to correlate the physical correspondence between the orthotropic plate and bellows.…”

Section: Location Of Tangential Membrane Stress (S 1 )mentioning

confidence: 99%

Parametric design analysis of meridional deflection stresses in metal expansion bellows using gray relational grade

Pagar

Gawande

2020

J Braz. Soc. Mech. Sci. Eng.

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Unpredictable and uncertain failure of the bellows needs the attention of the designer toward maximum meridional deflection stresses generated on the U-shaped convolutions. Evaluation of these maximum stress points on the flexible convolutions is multifaceted. This paper deals with the identification of these stresses induced on the bellows convolutions by analytical and experimental methods. Further, the influence of the pivotal design parameters on meridional deflection stresses is studied mainly in two aspects: (1) effect of number of convolutions (N) and pitch diameter (d p) on the meridional deflection stresses and (2) the determination of the optimized design parameters to reduce the stress levels using effective multi-response gray relational grade (GRG) optimization technique. Three bellows of stainless steel material (Grade SS321) are used for the experimentation with a different number of convolutions (N) and pitch diameters (d p). The optimal design parameter setting is found by using GRG analysis through ANOVA and regression mathematical model. The effect of design factors on GRG is analyzed. Besides, using GRG, the regression model enhances to give alternative optimal solutions; in turn, it increases the designer's choice for the selection of the parametric levels. In the confirmation test, it is seen that the average improvement in GRG for all selected Taguchi orthogonal runs is 23%.

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Section: Location Of Tangential Membrane Stress (S 1 )mentioning

confidence: 99%

Parametric design analysis of meridional deflection stresses in metal expansion bellows using gray relational grade

Pagar

Gawande

2020

J Braz. Soc. Mech. Sci. Eng.

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“…The simplifications and assumptions required for closed-form solutions are described in [21] and [22]. These limitations motivate most bellows designers to use finite element analysis (FEA) methods [23]. Fig.…”

Section: A Bellows Actuatormentioning

confidence: 99%

Printable hydraulics: A method for fabricating robots by 3D co-printing solids and liquids

MacCurdy

Katzschmann

Kim

et al. 2016

2016 IEEE International Conference on Robotics and Automation (ICRA)

170

102

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This paper introduces a novel technique for fabricating functional robots using 3D printers. Simultaneously depositing photopolymers and a non-curing liquid allows complex, pre-filled fluidic channels to be fabricated. This new printing capability enables complex hydraulically actuated robots and robotic components to be automatically built, with no assembly required. The technique is showcased by printing linear bellows actuators, gear pumps, soft grippers and a hexapod robot, using a commercially-available 3D printer. We detail the steps required to modify the printer and describe the design constraints imposed by this new fabrication approach.

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Multi-response design optimisation of convolution stresses of metal bellows using integrated PCA-GRA approach

Pagar

Gawande

2020

Australian Journal of Mechanical Engineering

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Stress analysis method of U-shaped bellows and its experimental verification

Cited by 4 publications

References 5 publications

Parametric design analysis of meridional deflection stresses in metal expansion bellows using gray relational grade

Parametric design analysis of meridional deflection stresses in metal expansion bellows using gray relational grade

Printable hydraulics: A method for fabricating robots by 3D co-printing solids and liquids

Multi-response design optimisation of convolution stresses of metal bellows using integrated PCA-GRA approach

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