Research On Field Visualization Application Of Hull Segment Assembly Process

The manufacture of hull segments is an important factor affecting ship construction.At present,the section manufacturing scheme of the shipbuilding enterprises in our country is mainly based on the experience of the designer in combination with their own experience.It is often lack of effective means of verification.It is often made temporary modification in the actual manufacturing process,which seriously affects the progress of work.In addition,the traditional construction drawings can’t accurately express the process information of the hull segments,the guidance to the work of the construction personnel is not strong,and it is not convenient for the construction personnel to understand the construction method in an all-round way.In response to the questions raised above.Through the analysis of the content and the kind of the assembly information model,the assembly information model of the hull segment is obtained,including the design parameters,the connection relation and the assembly-level relation.Based on the hierarchical model theory,the model structure,component information and assembly-level relation of hull segments are studied,and the establishment of hull segment assembly information model is completed by using CATIA 3D design software.The interference matrix and connection matrix of components are studied,the genetic algorithm is adopted to solve the optimal assembly sequence of the hull segment.The evaluation function is used as the fitness function of the genetic algorithm,and the genetic code,the fitness function,the genetic operator,the genetic parameter and the termination condition of the assembly sequence planning are designed.The optimal assembly sequence of the hull segment is obtained,and the complexity of the problem is simplified.Through the analysis of the basic requirements of the hoisting scheme,the sling and the hoisting equipment used in the hoisting process are selected according to the basic information of the hull segment.Based on the study of the symmetry,weight,size and hoisting equipment of the hull segment structure,the number of hoisting points involved in the hoisting process of the hull segment is selected,and the corresponding hoisting methods and steps are designed.The reasonable lifting point position is obtained according to the relationship between the force of the sling and the position of the lifting point.The structural deformation of the whole lifting scheme is verified by the finite element analysis software,and the lifting scheme in accordance with the lifting requirements is obtained.The manufacturing process simulation of the hull segment is completed in DELMIA simulation software by using the module interface between CATIA 3D design software and DELMIA simulation software,and the ergonomics technology and interference detection in the manufacturing process are studied.The field visualization system is designed and realized,the process information,construction drawings and virtual animation are integrated,and the above information is classified according to the division of the manufacturing process.So that the construction personnel in the production site can query the production information according to the station of the manufacturing process,and understand the production content comprehensively and intuitively,so as to improve the work efficiency,reduce the rework phenomenon and shorten the manufacturing cycle.