机电工程技术2025，Vol.54Issue(4)：118-122,5.DOI:10.3969/j.issn.1009-9492.2024.00134
基于离散元法的强制搅拌机叶片磨损数值研究
Numerical Study on Wear Characteristics of Forced Mixer Based on Discrete Element Method
摘要
Abstract
The wear failure of the forced mixer blades under complex working conditions will directly reduce the quality and production efficiency of the asphalt mixture.To reveal the wear characteristics of the mixer blades during the asphalt mixture stirring process and to ensure the safe and efficient production of the mixer,a coupled model of the asphalt mixture stirring motion process is established using the discrete element software EDEM,considering the temperature of the asphalt mixture.Based on the Archerd wear model and the discrete element method,numerical simulation is conducted on the mixing drum and the blades.The results show that the wear degree of the mixing blades is much greater than that of the mixing drum,with the wear depth of the mixing blade 4 being the greatest and most prone to failure.The greatest wear occurs at the outer edge of the mixing blade,and the tangential wear is greater than the normal wear.The wear caused by tangential force can be reduced by increasing the installation angle.The installation angle of the mixing blade 4 is optimized from 0° to 30°.After the optimization of the installation angle,the service life can be increased by 15.5%.It is estimated that after the optimization,the mixing blades need to be replaced after working for 415 days under the maximum working conditions,providing a basis for improving the service life and replacement time of the mixing blades.关键词
搅拌机/磨损/离散元法/Archard磨损模型Key words
mixer/wear/discrete element method/Archard wear model分类
化学化工引用本文复制引用
滕云来,武祥林,杨绍普,李韶华..基于离散元法的强制搅拌机叶片磨损数值研究[J].机电工程技术,2025,54(4):118-122,5.基金项目
中央引导地方科技发展资金项目(226Z1904G) （226Z1904G）
河北省高等学校科学技术研究项目(KJZX202202) （KJZX202202）
