Parametric Analysis System Development Of The Platform Of One Kind Of Crawler Crane

With the development of fundamental facilities, crawler crane play an increasingly important role. As one of the most important load-carrying parts of crawler cranes, its capabilities directly affects the crane’s normal work. The crane’s design in the past were the design integrated half theory and half experience, were the design which based on the mathematical and mechanics, with this method the design process is repeated, period, and little accuracy. Product designed by this method is heavy clumsy and performance, it is difficult to meet market needs. In recent years, and widely used the large finite element analysis software (ANSYS) to built the model of the initial design structure, then give the boundary conditions, solve and analysis results. But if we want to analysis or modify the results of the structure in different conditions, we must built new model and repeat the steps above, When the model is more complicated or has more to be modified, it is quite complex and time-consuming.As the fast decvelopment of modernization, crawler cranes are more likely to work fully loaded and to work more frequently, the security of a crawler crane is concerned widely. Long-term since, the fatigue life estimation of crane has been the important research topic of engineering and technical personnel. Fatigue damage of crawler crane platform will directly affect the normal work, this topic proposed to estimate its fatigue life.In view of the above questions, using Visual Basic6.0language developed crawler crane platform parametric analysis system, and establish revelant Access database to facilitate call the data to finite element analysis and call the results. This system can encapsulate and call the the finite element analysis software ANSYS.Analysis system built input parameters interface and finite element analysis interface, according to the construction and engineering drawing to get parameter features from platform of a certain crawler crane. And realize the parameters relay between VB and ANSYS. Call the finite element modeling and calculation program compiled by the APDL language of the ANSYS software, establish a finite element analysis model which can reflect the actual structure better, and implement fully automated loading, analysis and postprocessing. Finite element analysis mainly include static analysis, modal analysis, transient analysis, and put the total weight of the platform structure as optimization targets, to optimize the cross-section size of the structure, which can available more economical and reasonable structure. After the finite element analysis, join results inquires interface and strength check interface, inquires the finite element analysis and checked. Establish fatigue life estimation interface, adopte rainflow counting from dealing with finite element stress analysis of spectral features, associated with the materials behavior curve and the Miner linear cumulative fatigue damage of a certain reliability to estimate the fatigue life of platform in certain reliability. Debugging results show that the system functions meet the enterprise needs, use convenient, and has stability performance.