| With the increasing shortage of land resources,and marine resources are extremely rich,in order to effectively solve the problem of energy shortage,more and more offshore platform mining equipment came into being.In order to ensure the safety and stability of these equipment,before going to sea,a large number of experimental studies need to be carried out in the wave flume laboratory to simulate the complex marine environment,and the towing system is the most basic test tool for research.At present,the relevant towing system equipment at home and abroad are used in small-scale tanks,which limits the needs of large-scale offshore platform structure tests,and there are still problems such as complex structure and heavy weight.Based on the large-scale wave flume,this paper designs a new experimental towing operation platform suitable for the field of marine engineering research,and designs the scheme and dynamics of the towing system structure.The main research contents of this paper are as follows:First,through investigation,access to information,comparative analysis of the advantages and disadvantages of domestic and foreign towing systems,based on the large-scale wave flume environmental conditions and design technical indicators,completed the design of the overall scheme of the towing mechanical system,and established its solid model.Second,in order to fully explore the influence of complex ocean conditions on the structural design of the towing system,based on the CFD numerical pool simulation technology,this paper uses the open channel wave-making VOF model combined with the UDF function and the dynamic mesh method to analyze the hydrodynamics of the towing tubing under six working conditions,such as wind-wave-flow coupling,to study its influence on the structural design of the towing system and provide data reference for the precise control of the towing system.The FSI method is used to analyze the dynamic response of the towing device,so as to improve the design accuracy of the system structure.Third,based on the ANSYS finite element analysis platform,the check analysis and calculation of the towed system structure are carried out.Firstly,the antioverturning stability of the towing system is calculated by the moment method,which provides a theoretical basis for the reasonable layout and installation of the experimental equipment.Secondly,the model is simplified by the combination of line body and entity,and the deformation and stress distribution of the structure are calculated and analyzed.The lightweight design of the trailer truss is carried out to reduce the total weight by 24.2 %.Finally,the modal analysis of the trailer truss is carried out to provide a theoretical basis for improving the structure and avoiding resonance.Fourth,the dynamic analysis of the towing system and the development of the physical prototype were carried out.Based on Adams simulation platform,the dynamics of the guide wheel set system is analyzed and the strength of the guide wheel shaft is checked.Secondly,according to the vehicle running stability index,combined with Matlab software,the running stability of the towing system is calculated theoretically.Finally,the physical processing,installation and debugging of the largescale wave flume towing system are preliminarily completed.Through the research of this paper,a set of test operation platform suitable for marine engineering research field is designed,which improves the design accuracy of the towing system structure,provides a model basis for accurate towing control,meets the needs of scientific research and achieves better performance and the best economic benefits. |
