Mass and buckling criterion optimization of stiffened carbon/epoxy composite cylinder under external hydrostatic pressure

Ghasemi, Ahmad Reza; Hajmohammad, Mohammad Hadi

doi:10.1590/1679-78253881

Cited by 3 publications

(2 citation statements)

References 28 publications

(17 reference statements)

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“…This particular lay-up show desired structural responses composite structures under external pressure. 22,23 Mechanical properties of a unidirectional laminate are presented in Table 1. Composite samples were made using filament winding method and then specimens were cut according to the standard ASTM D2290 (Figure 1).…”

Section: Methodsmentioning

confidence: 99%

A new insight into impact of thermal cycling on the un-notched and circular hole polymeric composite rings via naval ordnance laboratory-ring test

Ghasemi

Tabatabaeian

Moradi

2020

Journal of Composite Materials

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In this paper, different mechanical responses of polymer matrix composite rings under thermal cycling are analyzed. The polymer matrix composite rings are classified to un-notched and open-hole specimens and tested based on the naval ordnance laboratory-ring tensile test method. Internal pressure, fracture and surface degradation changes as a function of the hole diameter and number of cycles are investigated. Experimental results suggest that specimens with larger hole radius have more mechanical property variations during thermal cycling. Also, it is revealed that the mechanical properties of laminates degrade as a function of the number of cycles and the hole diameter. The results also demonstrate that long splitting fiber breakage is the main mode for the failure of un-notched specimens, whereas fiber breakage and fiber matrix debonding are the two main modes for the failure of open-hole specimens. Finally, a multiple regression model is proposed to predict the tensile response of un-notched and open-hole polymer matrix composite rings subjected to thermal cycling condition.

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Section: Methodsmentioning

confidence: 99%

A new insight into impact of thermal cycling on the un-notched and circular hole polymeric composite rings via naval ordnance laboratory-ring test

Ghasemi

Tabatabaeian

Moradi

2020

Journal of Composite Materials

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“…[28][29][30][31][32] Multistep and multi-objective optimization of laminated composite circular cylindrical shells under hydrostatic pressure using genetic algorithm (GA) and developed non-dominated sorting genetic algorithm (NSGA-II) were presented in recent years. [33][34][35][36][37] Peeters et al 38,39 described a two-level approach for variable stiffness composites and notified to the fiber placement defects in buckling analysis and optimization. Miller and Ziemiański 40 optimized dynamic behavior in addition to buckling load for laminated composite cylindrical shell.…”

Section: Introductionsmentioning

confidence: 99%

Multi-objective optimization of lateral stability strength of transversely loaded laminated composite beams with varying I-section

Soltani

Abolghasemian

Shafieirad

et al. 2022

Journal of Composite Materials

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In this research, the lateral buckling analysis and layup optimization of the laminated composite of web and flanges tapered thin-walled I-beams based on maximizing lateral-torsional stability strength and minimizing mass/cost of the structure are investigated. The classical lamination theory and Vlasov’s model for thin-walled cross-section are adopted to establish the total potential energy for thin-walled symmetric balanced laminated beams with varying I-section. By implementing the Ritz method, an explicit formulation for the lateral-torsional buckling load of a double-tapered beam subjected to transverse loading is then derived in terms of the load height parameter and stiffness quantities. Subsequently, the optimal arrangements of layer sequences are obtained using the non-dominated sorting genetic algorithm (NSGA-II) and properly defined objective function. The critical factors of fitness function as lateral buckling strength and the mass of the structure with critical limitations as ply angle, number of layers for the web and flanges, and the thickness of all section walls are considered in this study. Finally, the optimal layer arrangement for the web and flanges are separately determined and discussed. The results show that the presented optimization procedure and layups patterns lead to increasing the lateral-torsional buckling capacity about 52% compared to the conventional angle-ply and unidirectional layups for the web and flanges, respectively.

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A novel detailed analytical approach for determining the optimal design of FRP pressure vessels subjected to hydrostatic loading: Analytical model with experimental validation

Hajmohammad

Tabatabaeian

Ghasemi

et al. 2020

Composites Part B: Engineering

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Mass and buckling criterion optimization of stiffened carbon/epoxy composite cylinder under external hydrostatic pressure

Cited by 3 publications

References 28 publications

A new insight into impact of thermal cycling on the un-notched and circular hole polymeric composite rings via naval ordnance laboratory-ring test

A new insight into impact of thermal cycling on the un-notched and circular hole polymeric composite rings via naval ordnance laboratory-ring test

Multi-objective optimization of lateral stability strength of transversely loaded laminated composite beams with varying I-section

A novel detailed analytical approach for determining the optimal design of FRP pressure vessels subjected to hydrostatic loading: Analytical model with experimental validation

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