Estimation of virgin state of stress and determination of final rock stress model

Rock Stress ◽  
2020 ◽  
pp. 49-60
Author(s):  
O. Stephansson
Keyword(s):  
Stress Model ◽  
Rock Stress ◽  
State Of Stress ◽  
Virgin State

Determination of Contact Pressure during Double-T Section Rolling in Universal Beam Groove

2020 ◽  
Vol 299 ◽  
pp. 546-551
Author(s):  
Danil L. Shvarts ◽  
Sergey O. Nepriakhin
Keyword(s):  
Equations Of State ◽  
Rolling Force ◽  
Theoretical Method ◽  
Stress And Strain ◽  
Calculation Error ◽  
State Of Stress ◽  
H Beam ◽  
Section Rolling ◽  
Contact Pressures

Based on application the physical constraint equations of state of stress and strain of the metal for the isotropic medium, we get expressions for components of stress tensor. The new theoretical method for calculation of contact pressures and rolling force during rolling of double-T section in a universal beam groove was developed. Reliability of the method is confirmed by the results of experimental verification for conditions of rolling of H-beam No 35B1, 40K2 and 45B2 from steel 15CrSiNiCu on the universal beam mill of "NTMK". The average calculation error is 6.4%. The new method is recommended for calculation pass design and technological modes of H-beam rolling on rail-beam and section mills, equipped with universal stands.

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