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基于磨辊料层粉碎工作过程和显示动力学有限元方法,将磨辊料层粉碎阶段的散体物料简化为连续体,模拟分析了物料在磨辊动态载荷作用下的瞬态粉碎过程,探讨了磨辊与物料的相互力学作用过程。结果表明,模拟结果与磨辊实际粉碎过程相吻合,瞬态动力学分析可以用来研究磨辊粉碎过程;辊压机磨辊与物料的接触方式对磨辊耐磨性能和粉碎性能具有一定影响。控制磨辊粉碎时的应力分布区域和深度可以改善磨辊耐磨性能;改变磨辊与物料接触部位力的传递方式会影响物料的粉碎效果,即改变磨辊与物料间力的相互作用状态,对辊压机的耐磨性和粉碎效果都将有一定积极的影响。用显示动力学分析方法模拟磨辊瞬态粉碎过程还很少见,可为进一步研究磨辊表面形态提供参考。
Based on the grinding process and the dynamic finite element method, the bulk material in the crushing stage of grinding roller was simplified as continuum, and the transient crushing process of the material under the dynamic load of grinding roller was simulated. The roller and the material interaction between the mechanics process. The results show that the simulation results are consistent with the actual grinding process of the grinding roller. The transient dynamic analysis can be used to study the grinding process of the grinding roller. The contact between the grinding roller and the material of the roller press has some influence on the wear resistance and grinding performance of the grinding roller . Controlled grinding roller crushing the stress distribution area and the depth can improve the wear resistance of the roller; to change the roller contact with the material part of the force transmission will affect the crushing effect of the material, that is, to change the force between the roller and the material interaction state, On the roller press wear resistance and crushing effect will have some positive impact. It is still rare to simulate the transient grinding process of the roller by the method of display dynamic analysis, which can provide reference for further study of the surface morphology of the roller.