Structural Analysis And Optimization Of A Type Of Straight ARM Type Aerial Work Platform Boom

The boom structure is an important component of the aerial work vehicle and the main force-bearing member.The boom structure is subjected to various external loads during the working process.Its structural mechanical properties not only affect the safety and reliability of the work,but also determine the performance and load carrying capacity of the whole machine.The research on the mechanical properties of the boom structure becomes the aerial work vehicle key research content in the design field.This paper takes the boom structure of a 58-meter self-propelled aerial work vehicle as the research object.The layout and cross-section characteristics of different booms are analyzed to provide reference for the actual design and selection of engineering.The working load of the boom structure is analyzed,and the analytical model of the boom structure is derived.The relationship between the force value of each component and the variable length and the length of the telescopic length is obtained.The dangerous condition is found and the stiffness of the boom is established by the amplification factor method.Then using the APDL language of the finite element analysis software ANSYS,the parametric finite element model of the telescopic arm is established,and the structural static analysis is carried out under six typical conditions.The analytical results are in good agreement with the analytical solution from a theoretical perspective The correctness of the finite element model is verified,and the stress test is carried out for typical working conditions.The test results are consistent with the finite element analysis results.The correctness of the finite element model is verified from the experimental point of view.Finally,the lightest weight of the telescopic arm is used as the optimization target.The geometry of the boom section is taken as the design variable,and the strength of the boom is used as the constraint condition.The structure of the telescopic arm is optimized.After optimization,the weight of the telescopic arm is reduced by 5.77%.It shows that the optimized boom structure meets the design requirements of overall stiffness and strength of each component.The research methods in this paper provide a reference for the study of similar engineering problems.The research results of this paper have been applied to actual products.