Dynamic Simulation Research Of Ladle Crane Based On Virtual Prototyping Technology

Ladle crane lifting molten metal, working in high temperature, high dust environment and working level is high. It's the necessary equipment for safe production of metallurgical industry. If appear fault may cause big loss and serious consequences. Design and manufacture phase of ladle crane at present have not enough consider to the use, maintenance, repair and failure analysis, lacking of validation to original design and improve to structure optimization. Using virtual prototyping technology can solve this problem effectively. Virtual prototyping technology can achieve monitoring, maintenance and repair data react on structure design phase. Through the virtual prototype simulation can rapid found problems whether solved or not with improvement design, supporting large and complex hoisting machinery equipment's structure optimization. At the same time, using the results of simulation can provide effective guidance and optimization in the process of operational crane's condition monitoring scheme, guarantee safe operation of ladle crane.This paper used the multidisciplinary modeling tools and simulation technology those based on Solid Works, ADAMS and ANSYS software platform to build ladle crane's virtual prototype in collaborative simulation environment, Completed rigid body dynamics simulation and rigid-flexible coupling dynamics simulation in various working conditions. By comparing simulation results with the theoretical calculation and field test to prove the validity of the model and the scheme is feasible. Gaved the theoretical guide for ladle crane structure problem analysis, structure optimization design, and stress monitoring sensor arrangements. The main research content of this paper's is as follows:(1) Analysed the ladle crane's mechanism and structure. According to the design drawings, used bottom-up and top-down method to bulid ladle crane's 3D model with Solid Works;(2) Imported 3D model of ladle crane to ADAMS which built in Solid Works. Based on ADAMS multi-rigid-body dynamics theory, built the ladle crane's virtual prototype and carried out the multi-rigid-body dynamics simulation. Compared simulation results with the theoretical calculation, proved correctness of the virtual prototype model and the simulation parameter settings;(3) Imported 3D model of bridge to ANSYS which built in Solid Works. Built the flexible body of bridge with finite element method. Imported the MNF file to ADAMS and carried out rigid-flexible coupling dynamics simulation which based on ADAMS flexible-body dynamics theory.Imported lod file to ANSYS as boundary conditions. Completed the finite element analysis of bridge. Compared results of simulation with theoretical calculation and field test results, proved the validity of the virtual prototype. Through the simulation results analyzing, gived the improvement program of existing ladle crane's structure and provide guidance for bridge stress monitoring sensor layout.(4) Used fiber Bragg grating sensing technology to monitor the hot spot stress zone of ladle crane's bridge. Processed the of wavelength data which collected from bridge. Drawn in the process of monitoring the stress time history curve to prove the correctness of simulation result and guided the correction and optimization of the simulation model.