A Typical Piping System Performance Impact Analysis Of New Impact Study Component Design

With the development of modern military affairs, the anti-shock ability of pipelinesystems becomes more and more important in the whole warship system. In this paper, thespectrum analysis and time-domain analysis method is used to discuss the anti-shock abilityof pipeline systems, and the time-domain analysis method is verified by the model test.Then, three kinds of pipeline components are designed and their anti-shock abilities areanalyzed. The main contents are as follows:(1) The anti-shock ability of typical pipeline system under single point impact andmulti impact conditions is analyzed using spectrum analysis and time-domain analysisrespectively.(2) The multiple working conditions impact resistance test is undertaken on the droptable, through which the test data for the pipeline design is obtained, and the true data toverify the precision of simulation method is provided. Then with the help of FE softwareANSYS, the dynamic response of the pipeline system under different impacting conditionsis calculated, and the reliability of simulation results is verified by comparing withexperimental results.(3) By using nesting technology for component model and the whole pipeline model,three groups of new pipeline components are established. The dynamic response of thepipeline system is calculated by time-domain analysis; and the shock resistance performanceis compared between common components and the new designed components.The main conclusions are as follows:(1) Corner frequency and rising slope of shock spectrum vary with the pipeline systemboundary conditions. In time-domain analysis method, the maximum composeddisplacement and maximum composed stress are larger in multiple impact condition than insingle point impact condition. The incentive from combination of different directions canincrease the displacement and stress of pipeline system.(2) The results of experimental and numerical simulation show that the hanger is theweak part of pipeline system, and the hanger occurred fracture phenomenon in strong shockfirstly, and the weak part appears a large deformation in great impact.(3) Compared with common components，the new designed pipeline components caneffectively prevent the components from fracture, and reduce the deformation of pipe system under the impact load, thereby enhance the impact resistance of pipeline.