远距离等应力光纤线包缠绕张力制度设计

发布时间：2018-11-08 15:37

【摘要】：光纤线包中光纤是按照一定的张力缠绕在芯轴上,而合理的缠绕张力制度则可提高壳体整体性能。光纤是制导导弹传输信息的唯一通路,光纤线包是光纤制导武器的核心部件。本文研究的内容是光纤线包的缠绕张力制度,简要地介绍了光纤线包的缠绕原理和结构特点,系统地分析了光纤线包体存在的缠绕缺陷。在此基础上针对远距离光纤线包中层数多,内外层光纤的应力差别大,易出现“内松外紧”等现象,本文提出远距离等应力光纤线包缠绕的张力制度设计方法。本文首先基于弹性力学理论,以缠绕完成后各层光纤等应力状态分布为设计原则,对光纤线包中光纤和芯轴的应力进行详细分析,建立光纤线包应力分布模型；其次,找出应力与张力之间的关系,建立了等应力缠绕的张力制度；最后,运用ANSYS Mechanical有限元分析软件对光纤线包缠绕后应力应变情况分别进行了等应力缠绕张力和恒张力的仿真分析,进一步验证等应力张力制度的优越性。仿真结果表明：等张力下光纤线包内外层的应力差较大,“内紧外松”的现象相对严重,并且芯轴的中部变形量最大。而采用等应力缠绕的线包各层应力差明显减小,上述现象得到明显缓解。此外,芯轴的变形也比等张力下的变形略有减小。
[Abstract]:The fiber is wound on the core axis according to a certain tension, and the reasonable winding tension system can improve the overall performance of the shell. Optical fiber is the only way for guided missile to transmit information. In this paper, the winding tension system of the fiber line package is studied. The winding principle and structure characteristics of the fiber line package are briefly introduced, and the winding defects of the fiber line package are analyzed systematically. On this basis, aiming at the phenomenon of "inner loosening and external tightening", the tension system design method of long distance fiber package winding is put forward in the light of the fact that there are many middle layers of long distance fiber lines, the stress difference between inner and outer layers of optical fibers is large, and the tension system is easy to occur. In this paper, based on the theory of elastic mechanics, the stress distribution of fiber and core axis in fiber package is analyzed in detail, and the stress distribution model of fiber bundle is established based on the principle of equal stress distribution in each layer of fiber after winding. Secondly, the relationship between stress and tension is found, and the tension system of iso-stress winding is established. Finally, the ANSYS Mechanical finite element analysis software is used to simulate and analyze the stress and strain conditions of the fiber winding respectively, which further verifies the superiority of the equal stress tension system. The simulation results show that the stress difference between the inner and outer layers of the fiber line under equal tension is large, the phenomenon of "internal tight and external loosening" is relatively serious, and the central deformation of the core axis is the largest. However, the stress difference of each layer of the wire wrapped by iso-stress winding is obviously reduced, and the above phenomenon is obviously alleviated. In addition, the deformation of the core shaft is slightly smaller than that of the core shaft under equal tension.
【学位授予单位】：西安工业大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TN253

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