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Dynamics Analysis and Optimization Design of Hydraulic Excavator Working Equipment

Author: WangZaiChang
Tutor: WanLiRong
School: Shandong University of Science and Technology
Course: Mechanical and Electronic Engineering
Keywords: hydraulic excavator kinematics analysis dynamics analysis the finite element method optimization design
CLC: TU621
Type: Master's thesis
Year: 2011
Downloads: 275
Quote: 2
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Abstract


The topic of dynamics analysis and optimization design of hydraulic excavator working equipment bases on advanced computer processing technology. This technology contains simulation technique and the finite element method. It is the latest analysis and optimization method possessing some character such as integration, completion, high-effectiveness and systematization. It realizes the kinematics and the dynamics analysis of excavator working equipment. The position, velocity and acceleration of the excavator system and its every part at any time are obtained in the working process. It can be used the finite element method and post-processing optimization design to check intensity of working equipment and realize structure optimization.This paper has researched excavator working equipment which used the kinematics and the dynamics analysis technology and the finite element method. The mathematical model of excavator working equipment is established and the position, velocity and acceleration of key hinged point are calculated by analysis method. The virtual prototype model of excavator working equipment is established and analyzed its kinematics and dynamics character in the ADAMS environment. The working range of excavator working equipment is set and the stress curves of key hinged point are obtained. Also, the kinetic energy and the potential energy of excavator working equipment are obtained, and the bucket digging resistance and the arm digging resistance are calculated. The working performance and reliability of the hydraulic excavator is influenced by the rationality of its excavator working equipment structure. The boom and arm are the main bearing parts. They are optimized by the finite element method in order to enhance material utilization ratio and reduce cost.This dissertation introduces CAD/CAE conjoint analysis and simulation technology for excavator working equipment, which thoroughly is an innovative achievement in kinematics and dynamic analysis. Results provide useful information for designing and improving product, and these methods can be used to other domains for relative analysis.

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CLC: > Industrial Technology > Building Science > Construction machinery and equipment > Earthwork machinery, mining machinery > Excavator
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