Stress Distribution and Influence Factors of Fiber-optic Coil for Unmanned Submersible Vehicle

doi:10.3969/j.issn.1000-1093.2021.05.018

Abstract

Abstract: Fiber-optic coil is the key component to set up a dynamic wired communication channel between two nodes, which can is deployed during the movement of unmanned submersible vehicle. The stress distribution state of the coil in winding process directly determines its wire releasing performance.The radial deformation of the fiber-optic micro-cable and the relationship between its radial and axial deformations are explained by introducing its radial elastic parameters. A stress distribution model of the coil is established on the basis of the force analysis of the cable and the end plate. The variation of the stress distribution of coil with the elastic parameters of cable and winding tension is studied through simulation. Then the effect of each parameter on the storage life of coil is analyzed, and the optimization design of cable and winding tension is further proposed. Compared with the measured data of the coils, the changes of stress distribution and bathtub feature parameter are consistent with the simulation conclusions. The results show that the smaller the axial elastic modulus of cable is, the greater the radial elastic modulus and the radial elastic coefficient of cable are, the more stable the structure of coil is, but the storage life of optical fiber will be reduced; and the greater winding tension reduces the storage life of optical fiber, but does not affect the structural stability of the coil.

Key words: unmannedsubmersiblevehicl, fiber-opticcoil, stressdistributionmodel, fiberstress, elasticpropertyoffiber-opticmicro-cable, windingtension

CLC Number:

TANG Weijiang, LIU Weidong, GAO Zhuo, ZHANG Kai, ZHAO Peidong. Stress Distribution and Influence Factors of Fiber-optic Coil for Unmanned Submersible Vehicle[J]. Acta Armamentarii, 2021, 42(5): 1053-1064.

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