TY - GEN

T1 - Grain flow for rough surfaces considering elastic/inelastic grain collision

AU - Jeng, Yeau Ren

AU - Tsai, Hung Jung

PY - 2004/12/1

Y1 - 2004/12/1

N2 - Previous work by this group on an average lubrication equation for grain flow with roughness effects is extended to include grain-grain collision elasticity ranging from perfectly elastic to perfectly inelastic. The average lubrication equation is based on Haff's grain flow theory, with flow factors from Patir and Cheng and Tripp's use of perturbation. The derived flow factors are obtained as functions of rough surface characteristics, grain size and collision pattern. As collision energy loss approaches zero, the inelastic results approach those for perfectly elastic grain collision. The mathematical formulae for flow factors, grain/grain collision elasticity, grain size and roughness are presented, discussed. Predictions for the elastic and inelastic cases are graphically demonstrated and compared.

AB - Previous work by this group on an average lubrication equation for grain flow with roughness effects is extended to include grain-grain collision elasticity ranging from perfectly elastic to perfectly inelastic. The average lubrication equation is based on Haff's grain flow theory, with flow factors from Patir and Cheng and Tripp's use of perturbation. The derived flow factors are obtained as functions of rough surface characteristics, grain size and collision pattern. As collision energy loss approaches zero, the inelastic results approach those for perfectly elastic grain collision. The mathematical formulae for flow factors, grain/grain collision elasticity, grain size and roughness are presented, discussed. Predictions for the elastic and inelastic cases are graphically demonstrated and compared.

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M3 - Conference contribution

AN - SCOPUS:21244485873

SN - 0791841812

T3 - Proceedings of the ASME/STLE International Joint Tribology Conference, IJTC 2004

SP - 1353

EP - 1360

BT - Proceedings of the ASME/STLE International Joint Tribology Conference, IJTC 2004

T2 - 2004 ASME/STLE International Joint Tribology Conference

Y2 - 24 October 2004 through 27 October 2004

ER -