Neighbourhood effect of two short dents on buckling behaviour of short thin stainless steel cylindrical shells

Prabu, B.; Raviprakash, A. V.; Venkatraman, A.

doi:10.1504/ijcaet.2012.045654

Cited by 12 publications

(5 citation statements)

References 20 publications

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“…Vékony falú hengeres testek stabilitásvesztéséről számos tanulmányban olvashatunk. A munkák jelentős része részletesen foglalkozik a stabilitásvesztést befolyásoló tényezőkkel, közöttük is az egyik legjelentősebbel, a geometriai imperfekció hatásával hengeres héjak esetén [2][3][4][5][6][7]. Ezen cikkek (főként rozsdamentes acélból készült) hengeres testek horpadásaiból és egyéb gyártási hibáiból származó alakhibák, illetve azok méretének és elhelyezkedésének hatásával foglalkoznak egyszerű geometriájú szerkezeti elemek stabilitásvesztése során.…”

Section: Bevezetésunclassified

Alumínium palackok nyakazási lépéseinek és stabilitásvesztésének modellezési sajátosságai

Chapman

Baksa

Péter

2020

MDT

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Az alumínium csomagolóeszközök előállítása során az egyik kulcsfontosságú kérdéskör az alakítóerők és az alakítási határállapot -azaz ahol a palack stabilitásvesztése bekövetkezik- vizsgálata. A dolgozat ezen alakadási lépések, továbbá az ezek közben bekövetkező stabilitásvesztést leíró egyenletrendszert és annak végeselemes megoldási kérdéseit tárgyalja. A feladat vizsgálatához kialakítottunk egy térbeli héjmodellt, amely a modálanalízis eredményeiből kiindulva alkalmas a lengésképek alapján megzavart geometria nemlineáris stabilitásvesztési vizsgálatára módosított Riks-módszer segítségével.

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Section: Bevezetésunclassified

Alumínium palackok nyakazási lépéseinek és stabilitásvesztésének modellezési sajátosságai

Chapman

Baksa

Péter

2020

MDT

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“…Prabu et al (2007) carried out parametric study about the effect of dent dimensions and its orientations on the buckling strength of short stainless steel cylindrical shells under uniform axial compressive force load condition and it was concluded that circumferential dents have more dominant effect than longitudinal dents in reducing the buckling strength of cylindrical shells. Prabu et al (2009) studied about the nearness effect of two circumferential short dents on buckling strength of cylindrical shell by modeling two short dents at half the height of the perfect cylindrical shell model with varying the centre distance between the dents. Prabu et al (2010) studied about the buckling behavior of short carbon steel cylindrical shells under uniform displacement controlled axial compression and it was concluded that effect of dent dimensions and orientations on buckling strength of cylindrical shells decreases with a decrease in R/t ratio.…”

Section: Literature Reviewmentioning

confidence: 99%

Parametric study on buckling behaviour of thin stainless steel cylindrical shells for circular dent dimensional variations under uniform axial compression

Prabu¹,

Raviprakash²,

Rathinam³

2010

Int. J. Eng. Sci. Tech

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It is well known that thin cylindrical shell structures have wide applications as one of the important structural elements in many engineering fields and its load carrying capacity is decided by its buckling strength which in turn predominantly depends on geometrical imperfections present in it. Geometrical imperfections can be classified as local and distributed geometrical imperfections. But in this work, only local geometrical imperfection namely dent is considered for analysis. The main aim of this study is to determine the more influential dimensional parameter out of two dent dimensional parameters, one is the extent of dent present over a surface area and the other is dent depth, which affect the buckling strength of the cylindrical shells drastically. To account for the parameter "extent of dent present over an area", the dent is considered as circular dent and its amplitude is considered as dent depth. For this purpose, finite element (FE) models of cylindrical shells with a circular dent at half the height of cylindrical shells having different dent sizes are generated. These FE models are analyzed using ANSYS nonlinear buckling analysis. It is concluded that extent of dent present over an area is more influential than dent depth. To verify this conclusion further, FE models of cylindrical shells with two circular dents at half the height of cylindrical shell placed at 180˚ apart having different dent sizes are generated and analyzed.

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“…Regarding the buckling behaviour of cans, the finite element method seems to be the most efficient way to tackle the issue. Articles [7][8][9] detail the circumstances of buckling and the effect of multiple parameters on its occurance and behaviour. Probably the most important circumstance is the presence of geometrical imperfections.…”

Section: Introductionmentioning

confidence: 99%

Experimental and Numerical Investigations on the Stability of Cylindrical Shells

Baksa¹,

Gonczi²,

Kiss³

et al. 2021

JESR

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The stability of thin-walled cylindrical shells under axial pressure is investigated. The results of both experiments and numerical simulations are presented. An appropriate finite element model is introduced that accounts not only for geometric imperfections but also for non-linearities. It is found that small geometrical imperfections within a given tolerance range have considerable negative effect on the buckling load compared to perfect geometry. Various post buckling shell shapes are possible, which depend on these imperfections. The experiments and simulations show a very good correlation.

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Neighbourhood effect of two short dents on buckling behaviour of short thin stainless steel cylindrical shells

Cited by 12 publications

References 20 publications

Alumínium palackok nyakazási lépéseinek és stabilitásvesztésének modellezési sajátosságai

Alumínium palackok nyakazási lépéseinek és stabilitásvesztésének modellezési sajátosságai

Parametric study on buckling behaviour of thin stainless steel cylindrical shells for circular dent dimensional variations under uniform axial compression

Experimental and Numerical Investigations on the Stability of Cylindrical Shells

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