Fatigue analysis of thermal shrink-fit autofrettage in pressure cylinder using finite element analysis

Mohan, A.; S, Julyes Jaisingh; P, Babu Aurtherson

doi:10.1016/j.jmrt.2020.04.021

Cited by 7 publications

(3 citation statements)

References 11 publications

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“…When the hub and shaft are composed of the same material, the previous e can be simplified as follows: Diverse studies have used finite element method (FEM) simulations with the aim of reaching a complete characterization of the mechanical behavior of the assembled parts [11,[20][21][22][23][24][25], in particular of the stress concentration of an interference fit.…”

Section: Methodsmentioning

confidence: 99%

“…One of the aforesaid methods consists of inserting a contact ring of a mater a lower stiffness between the shaft and the hub in the way, shown in Figure 1. Diverse studies have used finite element method (FEM) simulations with th reaching a complete characterization of the mechanical behavior of the assemble [11,[20][21][22][23][24][25], in particular of the stress concentration of an interference fit.…”

Section: Introductionmentioning

confidence: 99%

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Finite Element Analysis of the Reduction in Stress Concentration Factors in Shrink Fits by Using Contact Rings

et al. 2022

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As it is well known, shrink fits exhibit a stress concentration at the hub edges that can cause the failure of such mechanical components. A method for reducing such a stress concentration is placing a contact ring between the hub and the shaft. To achieve the desired effect, the Young Modulus of the material used for the contact ring must be lower than the one used in the hub and the shaft. Unfortunately, there are no design methods for estimating the optimal dimensions or materials of the contact ring. To fill this gap, in this study, diverse numerical simulations by the finite elements method (FEM) were carried out considering different geometries and materials in order to obtain recommendations that allow mechanical designers to significantly reduce the stress concentrations in these components. According to the obtained results, a contact ring of 25% of the hub thickness allows to significantly reduce up to 40% of the stress concentration. In addition, a linear influence of the stress reduction with the Young modulus was found thereby, and the most recommendable material for the contact ring is the one with the lowest Young modulus. On the other hand, according to the obtained results, the influence of the Poisson coefficient can be considered negligible.

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Finite Element Analysis of the Reduction in Stress Concentration Factors in Shrink Fits by Using Contact Rings

et al. 2022

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“…At the same time, set the design life to the power of 10 to the 7th power. The results shown in Figure 3 show that the root safety factor at the large end of the connecting rod is less than 1, which is prone to fatigue [5][6][7]. The safety factor of the root of the large end of the connecting rod is less than 1, so it is easy to produce fatigue during work.…”

Section: Finite Element Analysismentioning

confidence: 99%

Optimization and analysis of connecting rods for pike crab bait cutting machines based on ANSYS Workbench

Xiong-sheng

2023

Third International Conference on Mechanical Design and Simulation (MDS 2023)

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In this paper, the static stress calculation and fatigue analysis of the connecting rod of the crab bait cutting machine are carried out by ANSYS Workbench software. The results show that the safety factor at the root of the connecting rod is about 0.65, which is prone to fatigue. The problem is improved by increasing the cross-sectional area, and the response surface parameter optimization design is used to seek the optimal solution of each parameter of the connecting rod with the minimum safety factor and quality of the connecting rod as the goal. Finally, three candidate schemes are verified to obtain the best scheme. The quality of the optimized connecting rod is reduced by 10.52%, and the minimum safety factor on the connecting rod is 1.02, which improves the reliability of the connecting rod.

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Bursting Pressure of the Autofrettaged and Interferenced Double-Layer Cylinder with an Internal Surface Crack

Khodayari,

Seifi

2024

J Fail. Anal. and Preven.

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Fatigue analysis of thermal shrink-fit autofrettage in pressure cylinder using finite element analysis

Cited by 7 publications

References 11 publications

Finite Element Analysis of the Reduction in Stress Concentration Factors in Shrink Fits by Using Contact Rings

Finite Element Analysis of the Reduction in Stress Concentration Factors in Shrink Fits by Using Contact Rings

Optimization and analysis of connecting rods for pike crab bait cutting machines based on ANSYS Workbench

Bursting Pressure of the Autofrettaged and Interferenced Double-Layer Cylinder with an Internal Surface Crack

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