Optimum analysis of inclined angle of mixing blades in planetary mixer based on discrete element method

IF 2.1 4区工程技术

Advances in Mechanical Engineering Pub Date : 2024-08-08 DOI:10.1177/16878132241269238

Wenmin Lu, Shumei Chen, Jinan Zheng, Xinyuan Fu, Guohua Fu, Jia Zhong, Qingyang Li, Zhuangbin Zhen

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引用次数: 0

Abstract

Based on production practice, it is known that the mixing scraper is an important mechanical part that the planetary mixer directly contacts with the concrete. Its structural shape will directly affect the mixing effect of the mixer, and the inclination angle of the mixing scraper is one of the most important factors affecting the mixing efficiency of the mixer. In this paper, based on the discrete element numerical analysis method, a three-dimensional simulation model of the vertical axis planetary concrete mixer is established, and the concrete mixing process is simulated, and the inclination angle of the mixing scraper is optimized based on the simulation results. An automatic precast concrete mixing experiment platform was built, and the simulation results were verified experimentally. The research results show that the experimental data and the simulation results are very consistent, which verifies the accuracy of the discrete element dynamics simulation model. It can be seen from the simulation and experimental results that the mixing efficiency of the mixer is the highest when the inclination angle of the mixing blade is 45°, and the number of collisions between different types of material particles in the mixing tank is the highest.

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基于离散元素法的行星搅拌器搅拌叶片倾斜角优化分析

根据生产实践可知，搅拌刮板是行星搅拌机与混凝土直接接触的重要机械部件。其结构形状将直接影响搅拌机的搅拌效果，而搅拌刮板的倾角是影响搅拌机搅拌效率的重要因素之一。本文基于离散元数值分析方法，建立了立轴行星式混凝土搅拌机的三维仿真模型，模拟了混凝土搅拌过程，并根据仿真结果对搅拌刮板的倾斜角度进行了优化。建立了预制混凝土自动搅拌实验平台，并对仿真结果进行了实验验证。研究结果表明，实验数据与仿真结果非常吻合，验证了离散元动力学仿真模型的准确性。从仿真和实验结果可以看出，当搅拌叶片的倾斜角度为 45°时，搅拌机的搅拌效率最高，搅拌槽中不同类型材料颗粒之间的碰撞次数也最多。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Advances in Mechanical Engineering Engineering-Mechanical Engineering

自引率

4.80%

发文量

353

期刊介绍： Advances in Mechanical Engineering (AIME) is a JCR Ranked, peer-reviewed, open access journal which publishes a wide range of original research and review articles. The journal Editorial Board welcomes manuscripts in both fundamental and applied research areas, and encourages submissions which contribute novel and innovative insights to the field of mechanical engineering

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