基于离散元方法的沥青搅拌筒叶片形式的对比研究

Contrast research in the form of asphalt of asphalt mixing drum base on discrete element method

沥青养护车的工作效率与其搅拌筒的搅拌性能直接相关,而其中的叶片对搅拌筒的性能起决定性作用.现在应用较多的是螺旋叶片和立刀式叶片,但是不同的叶片对搅拌进出料性能、破碎性能、均匀性能的作用效果不同.利用离散元软件EDEM,选取合适的材料参数和接触模型进行数值模拟、仿真,对比分析传统螺旋叶片式搅拌筒与立刀叶片式搅拌筒的性能优良,为选取适合沥青养护车搅拌筒的叶片作为搅拌筒的内部设计提供参考.

The working efficiency of the asphalt maintenance vehicle and its mixing performance is directly related to the mixing drum, and the blades have a vital role in the mixing performance. The conventional spiral blade and the vertical bladesare now applied widely. However, the mixing performance and crushing performance are different for different blades. Using the discrete element simulation software EDEM, contrasting the traditional spiral blade drum with the new fly blade drum and finally select the suitable style of blade for mixing drum.