壓路機駕駛室安全結構設計及性能分析
[Abstract]:The cab design of engineering vehicle should take into account the overall layout, modeling design, structural performance requirements and ergonomics of the vehicle and cab. The cab safety structure which is used to ensure the driver's driving safety is an important component unit of the cab. It mainly includes two parts: the overturning protection structure and the falling object protection structure. It is of great significance to study how to quickly design the cab safety structure to meet the safety performance. In this paper, the design of cab safety structure of a series of single steel wheel vibratory roller is studied. Based on the theory of rapid response design, the cab product family planning, cab module partition and interface design are carried out. The modularized configuration matrix of cab is established. The parameterized variables that affect the performance of FOPSROPS are defined, and the cab safety structure module is divided based on FOPSROPS parameterized components. The safe structure geometry and finite element analysis models of the cab of 28T roller are established by using CATIA and HyperMesh, respectively. Based on the nonlinear dynamic control equation and explicit central difference algorithm, the explicit nonlinear solution is carried out by Radioss solver. The deformation mode and stress distribution of the structure are obtained after initial lateral loading. It is concluded that the initial structure is local weak and a strengthening module is designed to enhance the overall strength and stiffness of the structure. The lateral, vertical and longitudinal loading of the improved ROPS is carried out respectively. It is concluded that the loading capacity and energy absorption capacity of ROPS meet the requirements of the standard. The displacement curve of the impact center and the stress and strain distribution of the roof are obtained by simulating the impact of FOPS, and the thickness parameters of the roof are changed to make the impact resistance of FOPS meet the requirements of the standard. The safety structure of the cab is made into a physical prototype, and the performance of FOPSROPS is evaluated in laboratory. All the performances are up to standard, and the FOPSROPS certification is obtained. Compare the simulation data with the experimental data, evaluate the simulation model and analyze the cause of the error. In this paper, the design, performance simulation, improvement and laboratory test of the cab safety structure are carried out, and the design ideas and methods of the serial roller cab safety structure are formed.
【學位授予單位】:山東大學
【學位級別】:碩士
【學位授予年份】:2017
【分類號】:U415.521
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