黑龙江科技大学学报2024，Vol.34Issue(3)：380-386,7.DOI:10.3969/j.issn.2095-7262.2024.03.008
基于损伤因子修正本构关系的煤岩截割载荷数值模拟
Numerical simulation of coal-rock cutting load based on damage factor-corrected constitutive relation
摘要
Abstract
This paper inteds to explore the impairment effect of the cutter for breaking coal rock on coal rocks.The study involves introducing the damage factor correction method to numerically simulate the cutting process of disc cutter;providing the calculation methods of damage factors by Weibull distri-bution and acoustic emission ringing counting respectively based on Mohr-Coulomb criterion;introducing damage factor parameters by using ABAQUS software to numerically simulate the load characteristics be-hind disc cutter cutting coal and rock with varying thicknesses;and comparing it with the experiment.The findings indicate that in the presence of the cutting thickness of 5,10,15,20 and 25 mm,the peak mean errors of numerical simulation and experimental radial load are 4.27%,0.45%,13.45%,8.50%and 12.22%,respectively;and the average error of load prediction of the modified model is 7.78%,which meets the requirements of engineering practice and verifies the feasibility and effective-ness of introducing damage factor into ABAQUS.关键词
碟盘刀具/损伤因子/煤岩/截割载荷Key words
disc cutter/damage factor/coal-rock/cutting load分类
矿业与冶金引用本文复制引用
郝鑫,刘春生,赵迎港,程硕..基于损伤因子修正本构关系的煤岩截割载荷数值模拟[J].黑龙江科技大学学报,2024,34(3):380-386,7.基金项目
国家自然科学基金项目(51974111) （51974111）
