The fiber winding circular-tube with small winding angle be used pins winding process because the winding turning length is too long.The winding turning length is a key technical parameter of the pins winding process,which is de-termined by the diameter,winding angle,and friction coefficient.In addition,the pins winding process parameters also in-clude the number of axial pin rows of in the winding turning area(the pins winding area),the axial position and axial dis-tance of pin rows,the pins distance(the pins number)in the circumferential direction,the pins height and the pins diame-ters.In this paper,the influence of winding angle and friction coefficient on the turning length-diameter ratio of the wind-ing turning area is studied by using the basic theoretical formula of filament winding and the method of numerical simulation.Through formula calculation and software simulation verification,when the winding angle is 54.7°and the friction coefficient is 0.12,the turning length-diameter ratio is 0.94;when the winding angle is 45°and the friction coefficient is 0.12,the turning length-diameter ratio is 1.73.Finally,based on the critical turning length-diameter ratio is 1,three technical roadmap of filament winding process for circular-tube winding is traditional circular-tube winding process,cylindrical-face turning pins process and end-face turning pins process.
filament windingprocess simulationturning length-diameter ratiopins winding process
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