Structural Design And Analysis Of Deep Water Lifting And Loading Shackle

The rapid development of the world economy has made the issue of energy and resources increasingly prominent.While the exploitation of land-based resources continues,people are looking to the oceans as a new direction for resource exploration,and how to find and successfully obtain these resources on the oceans has become a new issue to solve the world’s energy shortage.Nowadays,the design and manufacture of marine engineering equipment has become a top priority for national marine development.The shackle,as part of the lifting system,is one of the key points in the development of marine engineering equipment.The thesis designs a ROV shackle that is different from the general shackle structure.The main research elements are as follows:1)Analysis of the project requirements and the general construction form of the shackle,design and inspection of the structure and dimensions of the ROV shackle.The selection of materials and surface treatment of the shackle,taking into account the working environment of the shackle.2)The geometric and finite element models of the ROV shackle were developed and the finite element results were obtained by solving for them.Analysis of the finite element result clouds led to the conclusion that the designed ROV shackle met the strength requirements of the shackle for the project.3)The body and pin of the ROV shackle were optimised using the optimization module Design Exploration of ANSYS Worbench,and the finite element analysis of the optimised ROV shackle is carried out and the finite element results before and after the optimisation are compared.The dimensional drawings of the optimised ROV shackle were used to produce the prototype and to test its mechanical properties.4)Comparing fatigue life research methods at this stage,analysing the working mode and force characteristics of ROV shackles and proposing the use of the nominal stress method for fatigue life analysis of designed ROV shackles.The fatigue life of ROV shackles was predicted using n Code Design Life software.Figure 113;Table 14;Reference 56...