Dynamic buckling of thin cylindrical shells under axial impact

Wei, Zhigang; Yu, Jian; Batra, R.C.

doi:10.1016/j.ijimpeng.2005.07.008

Cited by 31 publications

(6 citation statements)

References 20 publications

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“…These folds appear in end that it near the wall. This type of buckling is created according to the geometry of the Thin-walled cylinder, loading conditions and material properties [36]. As seen in Fig.…”

Section: Simulation Resultsmentioning

confidence: 99%

Deformable nose design for the non-penetrating projectile

Taheri

Kavianipour

2023

Scientia Iranica

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This paper deals with the design of a deformable nose for the non-penetrating projectile in order to prevent its body deformation. Numerical, analytical and experimental studies have been carried out to analyze the effect of different nose shapes on the projectile deformation when it hits the brick wall. The projectile consists of an aluminum nose, a thin-walled steel cylinder body, and an end connector. This non-penetrating projectile can be used to carry a cargo that must reach its destination safely, for example in firefighting applications. To pursue this goal, the criterion utilized for the best design in this paper is stress and strain analysis. The geometric shape of the noses includes three types: type (a), type (b), and type (c). The first type of nose was flat shape. This nose was detached from the projectile by impact and did not prevent the projectile deformation. The second type of nose was a combination of flat and conical shapes. The projectile was also deformed by this nose. The third type of nose was a combination of flat, conical, and spherical shapes. Due to the maximum absorption of the impact energy, this type of nose prevented the deformation of the cargo and projectile.

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Section: Simulation Resultsmentioning

confidence: 99%

Deformable nose design for the non-penetrating projectile

Taheri

Kavianipour

2023

Scientia Iranica

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“…The dynamic stability and instability of simple structures, such as beams, [2][3][4][5] plates, 6,7 and shells, 8,9 have attracted much attention from researchers. Simitses 10 well reviewed and compared a large variety of concepts and criteria developed by the 1980s.…”

Section: Introductionmentioning

confidence: 99%

Dynamic stability of sandwich panels subjected to periodic axial loads

Yuan

Kardomateas

2023

Jnl of Sandwich Structures & Materials

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This paper presents an analysis for the dynamic stability of sandwich beams/wide plates subjected to periodic axial loads. The formulation of the problem is done by use of the Extended High-order Sandwich Panel Theory (EHSAPT). The equations of motion are derived from Hamilton’s principle and are expressed in terms of seven generalized displacements. A sandwich panel with simply supported edges is studied as an example, and the equations of motion for a given harmonic n are further derived. Two time-variations for the axial forces, namely, harmonic axial forces and step-wise periodic axial forces, are considered in this work. By considering the features of these two periodic load profiles, Floquet theory and Bolotin’s method are adopted to perform the dynamic stability analysis. Sandwich panels with different face-to-core thickness ratios are studied. Stability maps for varying frequency and amplitude of the forces are presented. Numerical examples show that when a sandwich panel is subjected to periodic loads, it is possible that it can experience dynamic instability even when the dynamic loads are much lower than the static critical loads.

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“…A large number of studies concerning the static and dynamic response of thin-walled tubes subjected to axial load have been conducted by many researchers, and some important parameters such as crushing distance, the peak load and the buckling shape have been investigated for crashworthiness designing [1][2][3][4][5][6][7][8][9][10][11][12][13]. Fig.…”

Section: Introductionmentioning

confidence: 99%