Study On The Strength Calculation Method Of The Crane Boom

Crane has a long history, with the scientific and technological advances in all types ofcranes after another.Their design and processing technology are becoming more and morestandardized. The most central part of crane is the crane boom, which is the main structure of theendure force. So the stiffness, strength and stability of the boom structure is particularlyimportant, and the to accurately establish the finite element model and finite element analysismethod is more is of top priority.Crane boom is the core structure of all terrain crane in the finite elment analysis, due to thecomplex structure and large models of crane booms will lead to directly if it is calculated using adetailed model will lead to an excessive number of units, the long you need to calculate and toomany working conditions if calculated by a detailed model directly.Calculation of a crane using adetailed model of a car can take months, which will not meet the reqiurements of enterprises. Inorder to shorten the development period of a simplified beam model is applied instead of adetailed model,which would greatly reduce the computing time to meet commercialreqiurements. However, whether the accuracy and efficiency of the simplify the calculation ofprecision, the beam model can be guaranteed the results accurately and efficiently, requires a lotof computing to be verified. In this paper, the compares calculations of simplified beam model,plate and shell model and solid model were compared, simplified in order to investigate theaccuracy of the beam model calculation eligilebility.In this article, the crane boom of the article studied is based on the model XCMG QAY500prototype all-terrain crane, using finite element analysis method including the performancecalculations, checking calculations and detailed calculations. Firstly, to simplify the structure ofthe crane boom,of the three models were produced. The first one is the boom tube structure thatis used to simulate BEAM188unit beam elements. The second is the boom tube structure that isused to simulate SHELL181unit shell element. The third is the arm tube structure that is used tosimulate SOLID185unit solid elements. And the performance and checking calculations iscalculated using a simplified calculation and verification of beam model, a detailed calculation isused Shell Model and solid model.This article has been performed the crane boom performance computing, providing theperformance table for the crane through performance computing, which makes the crane designbecomes more reliable and more efficient. And then conducted a check of calculations anddetailed calculations were calculated by comparing the results of the stress and displacementcontrol section of a test operating conditions, to determine the error of the simplified beam model calculation error in size. Through a detailed study of the shell model calculations, it wasfound in the contact position wad always present situation locally heavy stress, and normal testresults do not comply with this article on how to eliminate the local big stress did some effectiveresearch.Through these studies has validated certain extent, and improved the all terrain crane boomfinite element analysis results, which also has provided a reference for future finite elementanalysis of crane.