Journal of Dalian Maritime University >
2020 , Vol. 46 >Issue 4: 112 - 117
DOI: https://doi.org/10.16411/j.cnki.issn1006-7736.2020.04.014
Double-point contact friction test device based on resistance method
Received date: 2020-09-01
Revised date: 2020-10-21
Online published: 2020-10-21
Aiming at the problems of measurement difficulty and wiring interference in singlepoint contact test device which has been widely used at present, a new type of resistance test device was developed and constructed based on the framework of double point contact. The bottomup loading method was adopted to reduce the influence of device weight on the test results; the resistance was measured on the relatively static double lower test piece to avoid wiring on the moving part and simplify the circuit; the selfadaptive floating mechanism was used to realize the automatic adjustment balance to ensure the consistency of the twopoint contact state; the data collection system was independently developed, which could automatically collect and preserve the physical quantities in the test, and convenient postprocessing. The test results show that the variation law of friction coefficient in the test is similar to Stribeck curve, and the contact resistance has a high correlation with the changes of load and friction force, which can provide a basis for judging the lubrication state. The device has the advantages of simple structure, obvious phenomenon and guaranteed measurement accuracy as an effective experimental device for studying the tribological behavior of friction pairs.
Key words： resistance method; double-point contact; friction test; floating support
LIU De-liang , GUO Chen , LIU Zhen , YAN zhi-jun , XU Jiu-jun . Double-point contact friction test device based on resistance method[J]. Journal of Dalian Maritime University, 2020 , 46(4) : 112 -117 . DOI: 10.16411/j.cnki.issn1006-7736.2020.04.014
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