推土机冲击式松土器动力学特性研究
发布时间：2018-11-20 19:22
【摘要】：本文通过对冲击式松土器的Creo三维建模、MATLAB动力学分析与参数化方法以及ADAMS虚拟动力学仿真与优化分析，，深入研讨了冲击式松土器的动力学特性。 （1）对冲击式松土器的机构和工作原理进行了介绍，分析了机构的自由度。指明了冲击式松土器的几种典型工况的受力特点，并对其他特殊工况（如平行四边形工况）进行了简要的分析。 （2）介绍了冲击式松土器的参数化运动学的分析方法。通过建立数学模型对齿尖的位移分析，运用离散数值法绘制齿尖轨迹，从而得到了参数化的包络图。根据参数化的包络图，得到了冲击式松土器的若干个技术参数。根据差商法和离散数值法分析了齿尖的速度和加速度并得到其MATLAB参数化方法。 （3）建立动力学的数学模型分析齿尖的入土范围，估算冲击力和齿尖受力，绘制典型工况下（强制入土工况和匀速前进工况）整机动力学分析图，并给出特定工况动力学分析的计算实例，及其MATLAB的参数化方法。 （4）冲击式松土器的ADAMS仿真分析与优化。利用ADAMS软件对冲击式松土器的危险工况进行了动力学仿真，并在此基础上进行了灵敏度分析和优化设计。
[Abstract]:In this paper, the dynamic characteristics of impact soil-looser are discussed through Creo 3D modeling, MATLAB dynamic analysis and parameterization method, ADAMS virtual dynamic simulation and optimization analysis. The main contents are as follows: (1) the mechanism and working principle of impact soil-looser are introduced, and the degree of freedom of mechanism is analyzed. The stress characteristics of several typical working conditions of the impact soil-looser are pointed out, and other special conditions (such as parallelogram working conditions) are analyzed briefly. (2) the parameterized kinematics analysis method of impact soil-looser is introduced. By establishing a mathematical model to analyze the displacement of the tooth tip and using the discrete numerical method to draw the trajectory of the tooth tip, the parameterized envelope diagram is obtained. According to the parameterized envelope diagram, some technical parameters of impact soil looser are obtained. According to the difference quotient method and discrete numerical method, the velocity and acceleration of the tooth tip are analyzed and its MATLAB parameterization method is obtained. (3) the mathematical model of dynamics is established to analyze the range of the tooth tip, to estimate the impact force and the force on the tip of the tooth, and to draw the dynamic analysis diagram of the whole machine under the typical working conditions (forced entry condition and uniform speed forward condition). An example of dynamic analysis under specific conditions and the parameterization method of MATLAB are given. (4) ADAMS simulation analysis and optimization of impact soil looser. The dynamic simulation of the perilous condition of the impact soil-looser is carried out by using ADAMS software, and the sensitivity analysis and optimization design are carried out on the basis of the simulation.
【学位授予单位】：太原科技大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：S222.51
本文编号：2345760
[Abstract]:In this paper, the dynamic characteristics of impact soil-looser are discussed through Creo 3D modeling, MATLAB dynamic analysis and parameterization method, ADAMS virtual dynamic simulation and optimization analysis. The main contents are as follows: (1) the mechanism and working principle of impact soil-looser are introduced, and the degree of freedom of mechanism is analyzed. The stress characteristics of several typical working conditions of the impact soil-looser are pointed out, and other special conditions (such as parallelogram working conditions) are analyzed briefly. (2) the parameterized kinematics analysis method of impact soil-looser is introduced. By establishing a mathematical model to analyze the displacement of the tooth tip and using the discrete numerical method to draw the trajectory of the tooth tip, the parameterized envelope diagram is obtained. According to the parameterized envelope diagram, some technical parameters of impact soil looser are obtained. According to the difference quotient method and discrete numerical method, the velocity and acceleration of the tooth tip are analyzed and its MATLAB parameterization method is obtained. (3) the mathematical model of dynamics is established to analyze the range of the tooth tip, to estimate the impact force and the force on the tip of the tooth, and to draw the dynamic analysis diagram of the whole machine under the typical working conditions (forced entry condition and uniform speed forward condition). An example of dynamic analysis under specific conditions and the parameterization method of MATLAB are given. (4) ADAMS simulation analysis and optimization of impact soil looser. The dynamic simulation of the perilous condition of the impact soil-looser is carried out by using ADAMS software, and the sensitivity analysis and optimization design are carried out on the basis of the simulation.
【学位授予单位】：太原科技大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：S222.51
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