Time Domain Response Analysis of Floating Structures under Stochastic Sea Conditions
In order to obtain the time domain response of floating structures under random sea conditions quickly and accurately,a method for calculating the time domain response is proposed.The dynamic equation of the finite element stress model is established,and the steady state solution of the node under periodic load is demonstrated.The calculation formula of the stress response function of the joint is derived.The sea state wave spectrum is decomposed and the time domain response of node stress under random sea state is calculated by means of superimposed stress response.The feasibility and superiority of the proposed method are proved by numerical simulation and concrete project application,which provides a new idea for time domain fatigue analysis of floating platform.
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