压路机驾驶室安全结构设计及性能分析

发布时间：2019-02-09 14:35

【摘要】：工程车辆的驾驶室设计要综合考虑车辆和驾驶室的总体布置、造型设计、结构性能要求和人机工程学等。用于保证司机驾乘安全的驾驶室安全结构是驾驶室的重要组成单元,它主要包括翻车保护结构和落物保护结构两部分。研究如何快速设计出满足安全性能的驾驶室安全结构具有重要的意义。本文以系列单钢轮振动压路机驾驶室安全结构设计为研究对象,基于快速响应设计理论,进行了驾驶室产品族规划、驾驶室模块划分及接口设计,并建立了驾驶室模块化配置矩阵;定义了影响FOPSROPS性能的参数化变量,并对驾驶室安全结构模块基于FOPSROPS参数化构件进行了模块划分。利用CATIA和HyperMesh分别建立28T压路机驾驶室安全结构几何及有限元分析模型,以非线性动力学控制方程及其显式中心差分算法等为基础理论,用Radioss求解器进行显式非线性求解,侧向初步加载后得到结构的变形模式及应力分布情况,分析结论为初始结构局部薄弱,设计加强模块来提升结构的整体强度和刚度。对改进后的ROPS分别进行侧向、垂向、纵向的加载,结论为ROPS的承载和能量吸收能力满足标准要求。对FOPS落锤冲击进行了仿真模拟,得到了落锤冲击中心的位移曲线和顶板的应力应变分布,改变顶板的厚度参数,使得FOPS的抗冲击性能满足标准要求。将驾驶室安全结构制作成物理样机,对FOPSROPS性能进行实验验室评价,各项性能均达标,并取得FOPSROPS认证。对比仿真分析和试验数据,对仿真模型进行评价并分析误差产生的原因。本文进行了驾驶室安全结构的设计、性能仿真、改进及实验室试验,形成了系列化的压路机驾驶室安全结构的设计思路与方法。
[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.
【学位授予单位】：山东大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：U415.521

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