Study on Winding Pattern and Undulation Degree of Filament-Wound Composite Tube

2011 ◽  
Vol 341-342 ◽  
pp. 281-285
Author(s):  
Jiang Sun ◽  
Qi Xiao
Keyword(s):  
Filament Winding ◽  
Composite Tube ◽  
Filament Wound ◽  
Filament Wound Composite ◽  
Winding Angle ◽  
Wound Composite

The filament winding pattern of composite tube, the winding parameters and the undulation degree are studied in this paper. The study shows that the winding pattern mainly depends on Sp , the number of angular sections between the last circuit and the next circuit and Nc, the number of circuits performed until the fiber tow is deposited just next to the first circuit, and the changes of Nc and winding angle all have effects on the undulation degree.

scholarly journals Stability of Filament-Wound Composite Cylinders Subjected to Hydrostatic Pressure

2018 ◽  
Vol 36 (5) ◽  
pp. 839-847
Author(s):  
Kechun Shen ◽  
Guang Pan ◽  
Jun Jiang ◽  
Qiaogao Huang ◽  
Yao Shi
Keyword(s):  
Hydrostatic Pressure ◽  
Cylindrical Shells ◽  
Filament Winding ◽  
Filament Wound ◽  
Filament Wound Composite ◽  
Critical Buckling Pressure ◽  
Winding Angle ◽  
Composite Cylinders ◽  
Wound Composite ◽  
Composite Cylindrical Shells

In order to know the mechanical properties of filament-wound composite cylindrical shells subjected to hydrostatic pressure, solve the buckling problem of pressure hull in deep sea and provide reference for engineering design, it is necessary to research the stability of filament-wound composite cylindrical shells. Based on the theory of thin shells, the governing equations were derived. Stability of composite cylindrical shells was researched by employing Galerkin method to solve the eigenvalue equation. The critical buckling pressure was calculated for cross filament-wound, metal-filament-wound and angle filament-wound composite cylinders under hydrostatic pressure. Compared to the test results, the numerical solution was illustrated to be feasibility. On this basis, the numerical method was interacted with genetic algorithm to search optimum stacking sequence and filament winding angle. Three types of winding pattern [(±θ)12], [(±θ1)x/(±θ2)12-x] and [(±θ1)4/(±θ2)4/(±θ3)4] were investigated, . Further, the effects of winding angle and the corresponding layer number on the critical buckling pressure were evaluated. It was shown that winding angle variation affected the critical buckling pressure significantly. Stability was greatly improved by numerical optimization, and the maximum critical buckling loads are increased by 31.31%, 43.25% and 57.51% compared with the base line, respectively. As the number of design variable increased, the carrying capacity was improved markedly. The optimal critical buckling pressure was increased by 57.17%.

scholarly journals Bending Analysis of a Filament-Wound Composite Tube

2018 ◽  
Vol 08 (01) ◽  
pp. 66-77 ◽  
Author(s):  
Gyula Szabó ◽  
Károly Váradi ◽  
Dávid Felhős
Keyword(s):  
Bending Analysis ◽  
Composite Tube ◽  
Filament Wound ◽  
Filament Wound Composite ◽  
Wound Composite

Dome shape optimization of filament-wound composite pressure vessels based on hyperelliptic functions considering both geodesic and non-geodesic winding patterns

2016 ◽  
Vol 51 (14) ◽  
pp. 1961-1969 ◽  
Author(s):  
Ji Zhou ◽  
Jianqiao Chen ◽  
Yaochen Zheng ◽  
Zhu Wang ◽  
Qunli An
Keyword(s):  
Optimum Design ◽  
Basis Function ◽  
Pressure Vessel ◽  
Pressure Vessels ◽  
Filament Wound ◽  
Composite Pressure Vessel ◽  
Filament Wound Composite ◽  
Winding Angle ◽  
Dome Shape ◽  
Wound Composite

Filament-wound composite pressure vessels, owing to the advantages of their high specific strength, specific modulus and fatigue resistance, as well as excellent design performance, have been widely used in energy engineering, chemical industry and other fields. A filament-wound composite pressure vessel generally consists of two parts, a cylindrical drum part and the dome parts. In the cylindrical drum part, the filament winding angle and the winding layer thickness can be easily determined due to the regular shape. In the dome parts, however, both the winding angle and the thickness vary along the meridian line. Performance of the dome parts, which strongly depends on the effect of end-opening and the winding mode, dominates the performance of a pressure vessel. In this paper, optimum design of the dome parts is studied by considering both geodesic winding and non-geodesic winding patterns. A hyperelliptic function is adopted as the basis function for describing the meridian of the dome shape. The dome contour is optimized by taking the shape factor (S.F.) as the objective and parameters in the basis function as the design variables. A specific composite pressure vessel is taken as the numerical analysis example with varying dome shape which is to be optimized. The optimum design solution is obtained through the particle swarm optimization algorithm. It shows that an optimized dome with non-geodesic winding has better S.F. as compared with geodesic winding. Influences of the slippage coefficient and the polar opening on the S.F. are also discussed.

Design and Analysis Techniques for Filament-Wound Composite Pressure Vessel Domes

1999 ◽  
Author(s):  
William E. Howard ◽  
G. E. O. Widera
Keyword(s):  
Pressure Vessel ◽  
Pressure Vessels ◽  
Filament Winding ◽  
New Markets ◽  
Analysis Techniques ◽  
Filament Wound ◽  
Composite Pressure Vessel ◽  
Filament Wound Composite ◽  
Wound Composite ◽  
Composite Pressure Vessels

Abstract The use of filament-wound composite pressure vessels has expanded into many new markets in recent years, creating the need for better design and analysis techniques, particularly for the end domes. In this paper, design and analysis techniques are developed for elliptical-conical dome profiles with planar filament winding patterns. The effects of wide winding bandwidth are included by dividing the band into sub-bands and considering any point on the dome contour to be a laminate made up of the sub-bands. The slippage tendency of the band at its edges is also calculated.

Influence of mosaic pattern on hygrothermally-aged filament wound composite cylinders under axial compression

2020 ◽  
Vol 54 (19) ◽  
pp. 2651-2659 ◽  
Author(s):  
Cristiano B Azevedo ◽  
José Humberto S Almeida Jr ◽  
Heitor F Flores ◽  
Frederico Eggers ◽  
Sandro C Amico
Keyword(s):  
Compressive Strength ◽  
Composite Structures ◽  
Mechanical Response ◽  
Filament Winding ◽  
Environmental Conditioning ◽  
Filament Wound ◽  
Filament Wound Composite ◽  
Strength And Stiffness ◽  
Hygrothermal Conditioning ◽  
Wound Composite

The mechanical response of composite structures may be affected by harsh environments, particularly when the matrix has a major contribution, e.g. with off-axis plies. This study aims at investigating the influence of the winding pattern on the axial compressive behavior of filament wound composite cylinder under hygrothermal conditioning. Carbon fiber-reinforced epoxy cylinders were manufactured via filament winding with 1/1, 3/1, and 5/1 mosaic winding patterns and submitted to distilled and artificial seawater environmental conditioning. Water uptake for each hygrothermal conditioning was periodically monitored. The winding pattern influenced both compressive strength and stiffness, and the environmental conditioning decreased strength up to ≈10%. The winding pattern with three diamonds around the circumference of the cylinders provides the properties in term of compressive strength and stiffness.

Non-Geodesic Trajectories for Filament Wound Composite Truncated Conical Domes

2013 ◽  
Vol 281 ◽  
pp. 304-307 ◽  
Author(s):  
Lei Zu ◽  
Qin Xiang He ◽  
Jun Ping Shi ◽  
Hui Li
Keyword(s):  
Differential Geometry ◽  
Present Method ◽  
Pressure Vessels ◽  
Angle Distribution ◽  
Conical Shells ◽  
Filament Wound ◽  
Filament Wound Composite ◽  
The Given ◽  
Winding Angle ◽  
Wound Composite

The goal of this paper is to present non-geodesic trajectories for filament wound truncated conical domes for pressure vessels. The fiber trajectories for non-geodesically overwound truncated conical shells are obtained based on differential geometry and the non-geodesic winding law. The influence of the slippage coefficient on non-geodesic trajectories is evaluated in terms of the winding angle distributions. The non-geodesic trajectories corresponding to various initial winding angles are also illustrated for the given slippage coefficient. The results show that the winding angle distribution of non-geodesics on a truncated conical dome has an overall increase with the increase of the slippage coefficient or the initial winding angle. The present method can provide a significant reference for developing non-geodesically overwound conical structures.

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