1. 辽宁工程技术大学机械工程学院
2. 煤炭工业协会高端综采成套装备动力学测试与大数据分析中心
3. .辽宁工程技术大学国家地方联合矿山液压技术与装备工程研究中心
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陈洪月, 张坤, 李恩东. 钢丝绳橡胶输送带动力学参数变化规律分析[J]. 机械强度, 2017,39(4):966-970.
CHEN HongYue, ZHANG Kun, LI EnDong. ANALYSIS OF DYNAMICS PARAMETERS FOR THE STEEL CORD RUBBER CONVEYOR BELT[J]. 2017,39(4):966-970.
陈洪月, 张坤, 李恩东. 钢丝绳橡胶输送带动力学参数变化规律分析[J]. 机械强度, 2017,39(4):966-970. DOI: 10.16579/j.issn.1001.9669.2017.04.039.
CHEN HongYue, ZHANG Kun, LI EnDong. ANALYSIS OF DYNAMICS PARAMETERS FOR THE STEEL CORD RUBBER CONVEYOR BELT[J]. 2017,39(4):966-970. DOI: 10.16579/j.issn.1001.9669.2017.04.039.
钢丝绳橡胶输送带动力学参数的确定是研究带式输送机动态特性和运行能耗的关键问题,首先根据橡胶输送带的松弛、时变特性对其动力学参数的过渡态和稳定态进行定义,再以标准固体模型作为钢丝绳输送带的粘弹性本构模型,推导出动应变作用下输送带的应力解析解,并根据解析解中衰减项的特征,对过渡态和稳定态进行分析,建立输送带标准固体模型参数的通用性辨识模型和简化辨识模型,最后对st1600型钢丝绳输送带进行动应变加载实验,并采用Matlab cftool工具箱对实验结果进行辨识。结果表明:在实验参数下,随着加载循环次数的增加,通用模型辨识结果与简化模型辨识结果的差值逐渐减小,当加载循环超过67次时,两种模型的辨识结果吻合,并保持稳定;可将通用模型辨识结果与简化模型辨识结果首次达到吻合时的循环加载次数或对应的加载时间,作为划分输送带动力学参数过渡态和稳定态的判别条件。
The determination of the dynamics parameters for the steel cord rubber conveyor belt is the key problem to research the dynamic characteristics and the operation energy consumption of the belt conveyor.Firstly,the transition state and the stable state for the dynamics parameters are defined according to the relaxation and the time-variant characteristics of the rubber conveyor belt.Secondly,the stress analytic solution of the conveyor belt under the dynamic strain is derived by taking the standard solid model as the viscoelastic constitutive model,the transition state and the stable state are analyzed according to the attenuation term in the analytic solution,and the general identification model and the simplified identification model for the standard solid model parameters of the conveyor belt are established.Finally,the dynamic strain loading experiment using st1600 steel cord rubber conveyor belt is performed,and the Matlab cftool tool box is employed to identify the experiment result.The result shows that under the experimental parameters,the difference between the general model identifying result and the simplified model identifying result decreases with the increase of loading cycling times,and the general model identifying result and the simplified model identifying result are the same and maintain stable when the loading cycling times is greater than 67.The loading cycling times or the loading cycling time that the general model identifying result and the simplified model identifying result are the same first can be taken as the criterion to distinguish the transition state and the stable state for the dynamics parameters of the conveyor belt.
输送带动力学参数粘弹性模型辨识模型
Conveyor beltDynamics parametersViscoelastic constitutive modelIdentification model
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