Shape Optimization to Minimize Stress Concentration in Shell Structures

Wilczynski, B.

doi:10.4203/ccp.72.5.1

Cited by 6 publications

(2 citation statements)

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“…Adaptation of Chernyh's theory to internally pressurized thin-walled vessels was discussed by Magnucki (1998). Wilczyński (2000Wilczyński ( , 2001 searched for meridional shapes that minimize stress concentrations in thin-walled or thick-walled vessels. Magnucki and Lewiński (2000) analysed the stress state in a non-standard torispherical head composed of polynomial and circular parts.…”

Section: Introductionmentioning

confidence: 99%

Optimization of the geometry of thin-walled uniform-strength pressure vessel end closures

Krużelecki

Proszowski

2014

Engineering Optimization

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In this article the problem of shape and thickness optimization of uniform-strength thin-walled pressure vessel heads subjected to internal pressure is investigated. The optimal geometry of a closure, which minimizes the design objective containing both depth and capacity or both depth and volume of the material of a closure (two variants), is sought in the class of uniform-strength structures under geometrical constraints. Three types of optimization problem are considered: the optimal shape of the middle surface is sought for a prescribed wall thickness, the optimal wall thickness is sought for a prescribed shape of a closure, and the most general case when looking for both shape functions. The meridian is approximated either by the convex Bézier polynomial or by functions with free parameters. Both two-and one-arc domes are considered. The optimal solutions are obtained using the simulated annealing algorithm.

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Section: Introductionmentioning

confidence: 99%

Optimization of the geometry of thin-walled uniform-strength pressure vessel end closures

Krużelecki

Proszowski

2014

Engineering Optimization

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“…Muc and Gurba [11] solved a problem of optimal parameters of heads using splines conjugated with genetic algorithms. Wilczyński [12] optimized the shape of the meridian of dished heads with the help of Bezier functions.…”

Section: Introductionmentioning

confidence: 99%

Optimal design of sandwich ribbed flat baffle plates of a circular cylindrical tank

Malinowski

Magnucki

2005

International Journal of Pressure Vessels and Piping

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Optimal design of an ellipsoidal head of a pressure cylindrical vessel

Magnucki

Lewiński

2003

Proc Appl Math and Mech

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The subject of analysis is a stress concentration problem in a circular cylindrical vessel with ellipsoidal heads. The region of the junction of ellipsoidal and cylindrical shells is subject to stress concentration. Intensity of the concentration depends, first of all, on relative convexity of the ellipsoidal head, and the ratio of thicknesses of the shells. Based on the boundary disturbance theory the stress state in this cylindrical vessel was analytically described. Optimal ellipsoidal heads were determined on the grounds of three optimisation criteria.

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Shape Optimization to Minimize Stress Concentration in Shell Structures

Cited by 6 publications

References 0 publications

Optimization of the geometry of thin-walled uniform-strength pressure vessel end closures

Optimization of the geometry of thin-walled uniform-strength pressure vessel end closures

Optimal design of sandwich ribbed flat baffle plates of a circular cylindrical tank

Optimal design of an ellipsoidal head of a pressure cylindrical vessel

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