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首页> 外文会议>49th International wood composites symposium >Improving Rotary Drum Blending Process through Experimental Investigation and Discrete Element Method Simulation
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Improving Rotary Drum Blending Process through Experimental Investigation and Discrete Element Method Simulation

机译：通过实验研究和离散元方法模拟改善转鼓混合工艺

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摘要

Understanding strand motion inside a Rotary Drum Blender (RDB) is key to improving the blending efficiency of Oriented Strand Board (OSB) manufacturing. A common problem, surging, occurs when strands pile-up on top of the atomizer boom and therefore have very limited exposure to resin. The relationship between strand motion and the current operating parameters used in mills is not clear and value for such parameters are usually chosen based empirically due to the difficulty of observing strands in a sealed blender drum. In order to be able to visualize the strand motion, a simulation model of the RDB process is needed in which the strand motion and position of those strands over time can be tracked. Such information will permit the identification of values that maximize the exposure of each strand to the resin spray.rnWe will report on a comprehensive examination of the effect of various operating parameters on strand motion inside a RDB; i.e., strand bulk density, strand breakage, coefficient of static and rolling friction. We will also present a Discrete Element Method (DEM) in which these values have been incorporated and compare model predictions with observations. We will also present results on how surging affects IB strength.
机译：了解转鼓式搅拌机（RDB）内部的钢绞线运动是提高定向钢绞线板（OSB）制造的混合效率的关键。当股线堆积在雾化器吊杆顶部时，会出现一个常见的问题，即浪涌，因此对树脂的接触非常有限。钢绞线运动与轧机中当前运行参数之间的关系尚不清楚，由于难以在密闭的搅拌桶中观察钢绞线，通常凭经验选择此类参数的值。为了能够可视化股线运动，需要RDB过程的仿真模型，其中可以跟踪股线运动和这些股线随时间的位置。这样的信息将允许识别值，以最大程度地使每条股线暴露于树脂喷雾中。我们将报告各种操作参数对RDB内部股线运动的影响的全面检查。即，线束的堆积密度，线束的断裂，静摩擦系数和滚动摩擦系数。我们还将介绍一种离散元素方法（DEM），其中已合并了这些值，并将模型预测与观察结果进行比较。我们还将介绍有关浪涌如何影响IB强度的结果。

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