Test and Simulation Study on Impact Response of Submarine Optoelectronic Composite Cables

This thesis aims to explore the impact resistance mechanical properties of submarine optical-electrical composite cable (SOCC) under different working conditions. Firstly, a hammer impact test was carried out on SOCC to reveal the structural deformation characteristics of the outer armour under different variables, and to record the impact evolution process and the maximum degree of concave deformation; secondly, a finite element simulation analysis was carried out on SOCC, and a comparison analysis was made with the test results; lastly, the deformation characteristics of SOCC under the influence of different parameters were explored. The results show that both the inner and outer armour undergoes depression deformation, while the copper armour, copper conductor and optical cable armour mainly show bending deformation, coupled with local depression deformation. With the increase of impact energy, the time required for metal components to reach the maximum deformation decreases, and the faster the rebound is; the impact angle does not have a significant effect on the depression deformation of the inner and outer armour, and produces significant damage to other internal components, of which the upper component has the most serious deformation damage. This paper is conducive to the evaluation of the dynamic performance of SOCC and provides a reference for the design of SOCC protection measures in engineering.