摘要
Serious accidents of mine hoists caused by high-speed sliding between friction lining and wire rope are often seen in coal mines.In order to solve this problem,we analyzed the contact characteristics between friction lining and wire rope.Then we carried out a dynamic mechanical analysis(DMA) to explain the change in mechanical properties of the friction lining as function of temperature and load frequency and found that temperature has a stronger effect on the mechanical properties than the frequency.We used multiple regression analysis to obtain the thermoviscoelastic constitutive relations of the friction lining.As well we derived the analytic solution for the thermoviscoelastic contact radius and pressure by combining the theory of viscoelastic contact mechanics with thermoviscoelastic constitutive relations.
Serious accidents of mine hoists caused by high-speed sliding between friction lining and wire rope are often seen in coal mines. In order to solve this problem, we analyzed the contact characteristics between friction lining and wire rope. Then we carried out a dynamic mechanical analysis （DMA） to explain the change in mechanical properties of the friction lining as function of tem- perature and load frequency and found that temperature has a stronger effect on the mechanical properties than the frequency. We used multiple regression analysis to obtain the thermoviscoelastic constitutive relations of the friction lining. As well we derived the analytic solution for the thermoviscoelastic contact radius and pressure by combining the theory of viscoelastic contact mechanics with thermoviscoelastic constitutive relations.
基金
Projects 50875253 supported by the National Natural Science Foundation of China
20060290505 by the Research Fund for the Doctoral Program of Higher Education of China
107054 by the Key Project of Ministry of Education of China
BK2008127 by the Natural Science Foundation of Jiangsu Province
CX08B_042Z by the Scientific Innovation Program for Postgraduates in Colleges and Universities of Jiangsu Province
