Development And Optimization Design Of Digital Prototype Of Marine Crane

The marine crane is an important loading and unloading equipment in the marine industry.Due to its large carrying capacity,strong vibration resistance,simple operation and small occupied area,it is widely used in the marine industry.At the same time,with the development of the market and the increase in market competitiveness,higher requirements have been placed on the design of marine cranes,and the design of cranes has developed in the direction of digitization,light weight,and serialization.This article takes the large marine crane as the research object and builds a digital design system for the crane structure,which aims to improve the efficiency of crane design,reduce the designer’s design burden,and provide a reliable basis for crane research and development.The main contents of this study are as follows:First,based on the key technology of digital prototype,build a digital prototype of marine crane.On the basis of detailed analysis of the construction of marine crane digital prototypes,a crane parts information model is established,modules are defined and divided,a top-down parametric crane structure model is determined,and the relationship network between parts parameter sizes is organized and classified.Association relationship,etc.;build and categorize the design of crane parts library: standard parts library,custom parts library,assembly parts library,etc.;through the construction of the database required by the digital prototype,realize the selection,calling and storage of database parameters,etc.,to achieve the digitization of marine crane Prototype construction.Then carrying on the simulation analysis of the stability and optimization of the marine crane.Based on the digital prototype of the marine crane,dynamic simulation is performed to analyze the effect of waves on the normal operation of the marine crane,to explore the motion response of the suspended object system under the fourth and sixth wave loads,and to analyze the strength of the crane’s key structure;based on the second-order theory And the arc length method to analyze the structural stability and nonlinear stability of the crane boom structure,and analyze the impact of different elevation angles on the stability of the boom structure;apply the first-order optimization algorithm and improved particle swarm optimization algorithm to lightweight Processing to verify the feasibility of the compiled algorithm and the effectiveness of the optimized structure.Finally,a crane digital design system is constructed,which can realize the functions of parametric component modeling,structural analysis and optimization of key components of the crane structure,mainly including digital design module,structural analysis module,dynamic simulation module and structural optimization module,etc.To realize the digital design of the overall structure of the crane.