振动破碎系统的建模与动力学分析

MODELING AND DYNAMICS RESEARCH ON THE VIBRATORY CRUSHER

对振动破碎机的多刚体-散体(物料层)耦合动力学问题进行了深入研究,首先通过实验识别出物料层的非线性滞回力的数学模型和参数,然后根据拉格朗日方程建立了振动破碎机的动力学方程,并用数值方法分析了该系统中刚散耦合的动力学特性,初步揭示了物料层对四动颚的相对运动轨迹的影响规律,并通过动力学试验验证了数值分析结果的正确性,为实际振动破碎机的动力学设计和产品开发奠定了基础。

This paper investigated the coupling dynamics between the rigid-bodies and the bulk solids bed in the vibratory crusher. First the relationship of the bulk solids bed during pressing and releasing was studied by the specially designed experiments. Then the governing equations of the crusher were derived according to the Lagrange's method, and its dynamical performance was investigated by solving these equations by Runge-Kutta Method,so the effect of the bulk solids bed on the trajectory of the four moving jaws was explored. Finally some dynamical experiments were carried out, which agreed well with the numerical analysis. Therefore all of the work provides a basis for the dynamics design and development of the new vibratory crushers.