A comparative analysis of magnetorheological energy absorber models under impact conditions

被引:12
作者
Shou, Mengjie [1 ]
Liao, Changrong [1 ]
Zhang, Honghui [1 ]
Xie, Lei [1 ]
机构
[1] Chongqing Univ, Key Lab Optoelect Technol & Syst, Minist Educ, Chongqing 400044, Peoples R China
基金
中国博士后科学基金; 中国国家自然科学基金;
关键词
magnetorheological energy absorber; comparative analysis; quantitative evaluation; dynamic model; quasi-steady model; inertia effect; FLUID; VIBRATIONS; FRICTION;
D O I
10.1088/1361-665X/ab1ad1
中图分类号
TH7 [仪器、仪表];
学科分类号
0804 ; 080401 ; 081102 ;
摘要
Theoretical models are of great significance in the development of magnetorheological energy absorbers (MREAs). There are two types of models, i.e., quasi-steady and dynamic models, depending on whether considering the inertia effect. It is necessary to perform comparative analysis between different models to determine the superiority of a model regarding a specific type of MREA. In our previous work, we proposed a dynamic model by using non-averaged acceleration (NA-BPIM model). This study focuses on giving a comprehensive comparative analysis for the NA-BPIM model with a quasi-steady and another dynamic model (considering inertia effect using area-averaged acceleration, AA-BPIM) for MREA under impact conditions. In order to evaluate the superiority of the models, the comparative analysis is qualitatively and quantitatively performed from the following three aspects: (1) the accuracy of theoretical model to predict MREA peak force, (2) the global agreement of dynamic force curves between model and experiment results and (3) the accuracy of theoretical model to predict the dynamic range. Specifically, the quantitative evaluations are conducted by means of the relative error, REPF, for MREA peak force, the mean absolute percentage error (MAPE), for the dynamic force curves and the relative error, REDR, for MREA dynamic range. The results show that the REPF, MAPE and REDR of the NA-BPIM model are the smallest when the test condition is given, demonstrating that the dynamic model incorporating non-averaged acceleration is the best to predict MREA dynamic force under high-speed impacts.
引用
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页数:11
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