基于ADAMS-EDEM耦合的振动慢剪挤压破碎机动力学分析

发布时间：2018-05-20 22:07

  本文选题：剪切挤压破碎 + 系统模态　； 参考：《矿业研究与开发》2017年04期

【摘要】：振动慢剪挤压破碎机是一种超细破碎设备,矿石进入破碎腔内,由镶嵌衬板内锥的正弦振动和外锥转动组成剪切、挤压复合破碎。简化破碎机系统,着重考虑内锥的运动,利用Lagrange方程建立系统6自由度运动数学模型。基于该运动数学模型在动力学软件ADAMS中建立破碎机参数化模型,利用ADAMS/vibration与离散元软件EDEM耦合进行数值模拟。研究了破碎机系统模态特性和外加激振频率对破碎机破碎力及破碎效果的影响。结果表明,破碎机系统模态为8阶时,模态振型对破碎过程最有利;当外加激振频率为75Hz时,振动慢剪挤压破碎机的破碎力获得极大提高,矿石破碎速率提升,矿石粒度更细。
[Abstract]:The vibratory slow shear extruding crusher is a kind of ultra-fine crushing equipment. The ore enters the crushing chamber and consists of the sinusoidal vibration of the inner cone of the inlaid lining plate and the rotation of the outer cone. The system of crusher is simplified and the motion of the inner cone is considered emphatically. The mathematical model of the motion of the system with 6 degrees of freedom is established by using the Lagrange equation. Based on the kinematic mathematical model, the parametric model of crusher is established in the dynamic software ADAMS, and the numerical simulation is carried out by using the coupling of ADAMS/vibration and discrete element software EDEM. The effects of the modal characteristics of the crusher system and the external vibration frequency on the crushing force and the crushing effect of the crusher are studied. The results show that when the mode of the crusher system is 8 order, the modal mode is the most favorable for the crushing process, and when the external exciting frequency is 75Hz, the crushing force of the vibratory slow shear extrusion crusher is greatly improved, the crushing rate of ore is increased, and the ore particle size is finer.
【作者单位】： 江西理工大学机电工程学院;
【基金】：国家自然科学基金项目(51464017) 江西省高校科技落地计划项目(KJLD13045)
【分类号】：TD451
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本文编号：1916430