Reliability Analysis and Experimental for Key Component of Launch and Recovery Equipment of Seafloor Drill
【Abstract】Launch and recovery equipment is the necessary equipment to realize the safe, reliable, and accurate launch and recovery for seafloor drill. Reliability analysis for key component of launch and recovery equipment under the random irregular wave environment is the basis of designing safe and reliable launch and recovery equipment. A new reliability analysis method for evaluating dynamic response characteristics of key component of the launch and recovery equipment is presented, and the reliability of the key component of the launch and recovery equipment is calculated under different variation coefficients. The research results show that the tension of the piston rod of hydraulic cylinder showed an irregular dynamic response under irregular wave, and the mean value of the tension of the piston rod of hydraulic cylinder is enhanced along with the increase of the flip angle of the launch and recovery equipment. A reliability of 0.999 126 is calculated when the variation coefficient is 0.3. The results of sea trial verify the correctness of the theoretical analysis and the random numerical simulation method. The technical support is provided for designing a safe, reliable, and accurate launch and recovery equipment.
【Keywords】 seafloor drill; launch and recovery equipment; random irregular wave; reliability analysis;
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