In order to study the dynamic characteristics of submarine cable under wave force
a three-dimensional finite element model of submarine cable under wave force is established.Firstly
the cable model is established by using SOLID185 element and pipe59 element.Then the wave force and current velocity are set up.The model is simulated and the simulation result is extracted.The displacement
stress and strain of the submarine layer structure and optical unit acceleration data are obtained.Through the data processing
under the conditions of wave height of 0.1m
period of 1s
and sea speed of 2m/s
the vibration frequency of the optical unit is about 50 Hz
which provides a theoretical reference for monitoring the working state of submarine cable by distributed optical fiber vibration sensing technology.
关键词
光纤复合海底电缆波浪力振动频率动力学分析有限元
Keywords
fiber-optic composite submarine cablewave forcevibration frequencydynamic analysisfinite element