Parametric Modeling And Finite Element Analysis Of Portal Slexing Crane Based On VB Viualization Techniques

Portal slewing crane as large ports necessary handling equipment, while it appearall sorts of destruction and fault that will cause serious and catastrophic accident, whichresults in production process cannot normal operation and cause huge economic losses.To solve the problem, at first, we can take its metal structure for static and dynamictheory of stress analysis, to identify the structure stress where is larger, and then carrieson to these parts of memory testing, stress testing, and nondestructive testing and othertesting. Moreover, different size or different types of cranes, is different because of itsstress distribution, monitoring will also focus on some differences, so we hope to haveevery piece of equipment to analyze and judge. To the above problems, the study takethe HM4575D portal slewing crane as research object, using the parametric technologyand finite element analysis software ANSYS, the main structural components of thecrane is analyzed, and the corresponding parametric modeling and analysis softwaredeveloped by Visual Basic. The main research work is as follows:1) Using the Pro/ENGINEER software, a virtual prototype crane is established,the crane luffing condition and rotating condition is simulated, and then gets thedynamic loads of main structural components, provided the basis and the reference forthe following finite element analysis.2) Established the finite element parameter models of the boom system,herringbone shelf system, cylinder and portal system, boom-herringbone shelf bearing,walking mechanism base, and then take the finite element analysis. From that we getthe size and distribution of deformation or stress, which provides a basis or guide forthe company and inspection organization to supervise and monitor the key position ofthe parts of the crane. Meanwhile, prepare the parameterization modeling and analysisbatch file for ANSYS, and the parametric finite element analysis of the structuralcomponents achieved.3) Study the crane structure’s dynamic characters, with parametric model extractthe first7former natural frequency and mode shapes. Provides a reference and basis for avoid the adverse effects of resonance by avoiding the natural frequency. Preparethe parameterization modeling and analysis batch file for ANSYS and parameterized.4) Combined with the actual service condition of the crane, testing the stress andthen compared the testing results with the theoretical analysis calculated results.Confirmed the accuracy and rationality of the simplification, the load and boundarycondition of the finite element model.5) Using visualization software Visual Basic to encapsulate the finite elementanalysis, achieve the parametric finite element analysis and analysis results view forthe same types, different size parameters major structure parts of the crane, and asimply readability system for crane parameterized modeling and finite elementanalysis developed.