Dump Truck based on virtual prototyping technology optimization of lifting mechanism

Along with the virtual prototyping technology, represented by the continuous development of computer technology, virtual design engineering fields gradually become a new means of modern design. Currently, the virtual prototyping technology has been applied to the automotive product research and development, and initially formed a set of professional theory, engineering design, scientific experiments, such as one of the more complete application system. The use of virtual prototyping technology, the early stages of product design analysis and evaluation of product performance, optimize the design parameters of the physical prototype, thus reducing the risk of new product development and shorten the development cycle, improve product performance, and ultimately improve their market competitiveness. In this paper, STQ3163L9Y6 dump truck as the research object, virtual prototyping software ADAMS and ANSYS for the application platform, systematically dump truck lifting mechanism and the key structure to optimize the design. This paper introduces the research background of virtual prototyping technology and its current development at home and abroad, an overview of multi-body dynamics and finite element method theory and its application software ADAMS and ANSYS; Then, according to mechanical optimal design theory, applicationADAMS, dump truck lifting mechanism established virtual prototype model and its dynamic simulation analysis and the results showed that: the key to the lifting mechanism to optimize the design of the hinge point to optimize the results achieved to decrease the thrust of hydraulic cylinders to improve lift The purpose of the performance of hoisting mechanism; and then apply the arm triangle ANSYS software for finite element analysis and the results showed that: the original materials, the irrational use of triangular arm, with variable density method for topological optimization arm triangle design, optimization results show that: in ensuring the rigidity and strength of the premise, the quality of the triangular arm before optimization 67.759kg reduced to optimized 45.702kg, reduced 32.6%, to achieve a lightweight design arm triangle; Finally, a dump truck in the vehicle model, self-excited vibration of the hydraulic cylinder in case of change of thrust, the results show that: consider the self-excited vibration of the vehicle, the tank will produce a certain thrust fluctuations, while generating self-excited vibration of the vehicle factor - suspension parameters optimal design, the cylinder will decrease the maximum thrust, and fuel tank thrust decay rate fluctuations there is considerable improvement, these suspension systems for truck design effective reference. This study successfully applied to the virtual prototype of the Tipper lifting mechanism optimization design, virtual prototyping technology in the same time, the field of application of special-purpose vehicles also have some reference value.

 

Keywords: dump truck lifting mechanism, optimum design, triangular arm, topological optimization, vehicle model