In order to reduce the serious consequences of pile leg puncture, a strain warning system with wireless data transmission is designed to improve the strength of puncture warning. Owing to the insufficient submarine foundation capacity and the influence of wind and waves, the pile legs are prone to puncture, resulting in platform collapse and serious consequences. Therefore, this paper builds and analyzes the Amesim model of the pile leg piercing phenomenon, and uses a land platform to simulate an ocean platform for experimental verification. The data is collected by wireless sensors and sent via Internet to analyze the data for warning.
In order to ensure that the robot has good mechanical properties, stability and hydrodynamic characteristics in underwater motion, and to protect the ROV core control module, battery compartment and other internal precision systems, this paper develops and designs a streamlined underwater robot shell, operating at a depth of 50m, with an overall theoretical linear design, regular shape using strength theory calculations and stress simulation analysis methods, and irregular shape using Solidworks Simutian numerical simulation method, based on Fluent for the overall shell in the fluid stress analysis. The results show that the stress σ1= 9.33MPa and yield pressure pCR1 = 13.368MPa for the large spherical shell; the stress σ2 = 6.67MPa and yield pressure pCR2 = 13.44MPa for the small spherical shell, both of which are less than the theoretical stress of 42.5MPa and yield pressure Pj=0.8MPa to meet the design requirements for strength and stability; the circular table shape and parabolic The maximum equivalent stress is 0.728MPa ≤ σs=50MPa, which meets the physical properties of ABS material; by simulating the stress changes in the three degrees of freedom of the ROV shell in and out, lift and rudder, 527.202Pa, 535.1Pa and 529.1Pa respectively, The yield strength of ABS material is 50MPa, which is much higher than the stresses in the three degrees of freedom of the ROV shell inlet and outlet, dive and rudder, indicating that the ROV meets the stress design requirements in the water.
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