Analysis of isogrid reinforced cylindrical vessels in the case of axially symmetric buckling

Stefan, HOTHAZIE; Camelia, MUNTEANU; Nastase, Mihaela; Radu, BIBIRE

doi:10.13111/2066-8201.2018.10.3.8

Cited by 2 publications

(1 citation statement)

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“…By introducing a progressive failure model and comparing the structural properties of laminated lattice structures with those of conventional grid structures, Ehsani and Rezaeepazhand discovered that by carefully choosing the laminated structure stacking sequence, its stiffness could be enhanced without affecting the failure index [19]. A novel method for lowering the amount of computing capacity needed to model the structural characteristics of a cylindrical vessel with isogrid stiffeners was proposed by Hothazie et al [20]. The vessel was divided into sections, and each component was roughly represented by a thin plate with varied qualities.…”

Section: Introductionmentioning

confidence: 99%

Material choice to optimise the performance index of isogrid structures

Bellini,

Berto,

Di Cocco

et al. 2023

Frattura Ed Integrità Strutturale

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Three key qualities should define the structures used in the aviation industry: they should be light, rigid, and strong. These goals can be met by selecting lightweight, high-performance materials like titanium alloy or composites, but careful structural design is also crucial to improve mechanical performance. The structures known as isogrids, which consist of a skin reinforced by a lattice frame, offer an effective way to meet the aforementioned specifications. The structural performances of isogrid-stiffened cylinders composed of various materials were compared in the current work. The structures under investigation were composed of titanium alloy, carbon fibre composite material, or a combination of both. A FEM model was proposed and validated by comparison with experimental results obtained from a composite material structure, and then it was used to simulate the behaviour of all the other structures. While there was some variation in the strength of the parts, it was discovered that the stiffness was almost uniform throughout all of the structures that were examined. But when the weight of the various constructions was taken into account, some very intriguing findings emerged: the composite material-only structure proved to be the most effective because it had the highest specific performances.

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Section: Introductionmentioning

confidence: 99%