Design of semi-rigid cables for harsh vibration environment

Sammanfattning: This thesis investigates semi-rigid cables exposed to a harsh vibration environment. Thethesis includes the creation of a simulation model of the semi-rigid cables as well asdeveloping a set-up and performing a experimental vibration test. It was shown that thecables could be modeled as a isotropic material with a fitted elastic modulus of 55 GPaand give accurate results in comparison with the experimental vibration test. However itis important that the boundary conditions of the cable are applied correctly. Regardingthe lifetime of the cables it was shown that pre-stress, due to a bending moment, inthe cables did not effect the lifetime of the cables. The amplitude moment, due to theoscillation in the cable from the random vibration, did however effect the lifetime of thecables. With data from the simulations and the vibration test an equation describingrelation between the amplitude moment and the number of cycles the cable was exposedto could be formulated.