scholarly journals Mathematical Model for the Thin Strip Cold Rolling and Temper Rolling Process with the Influence Function Method

2005 ◽  
Vol 45 (8) ◽  
pp. 1173-1178 ◽  
Author(s):  
Yuli LIU ◽  
Won-Ho LEE
Keyword(s):  
Mathematical Model ◽  
Cold Rolling ◽  
Influence Function ◽  
Function Method ◽  
Rolling Process ◽  
Thin Strip ◽  
Temper Rolling ◽  
Influence Function Method

AN INFLUENCE FUNCTION METHOD ANALYSIS OF COLD STRIP ROLLING

2008 ◽  
Vol 22 (31n32) ◽  
pp. 5728-5733
Author(s):  
Z.Y. JIANG ◽  
D.W. WEI ◽  
A.K. TIEU
Keyword(s):  
Cold Rolling ◽  
Influence Function ◽  
Function Method ◽  
Rolling Force ◽  
Work Roll ◽  
Thin Strip ◽  
Traditional Theory ◽  
Influence Function Method ◽  
New Findings ◽  
Strip Crown

An influence function method has been developed to simulate the asymmetric cold rolling of thin strip with work roll kiss at edges. The numerical simulation model was obtained based on the deformation compatibility of the roll system in rolling and lateral directions. The strip plastic deformation has been considered in the formulation, which is significantly different from the traditional theory of metal rolling. The rolling mechanics and crown of the strip with work roll edge kiss, which are new findings for cold rolling of thin strip, are obtained. A comparison of the rolling force, roll edge kiss force and the strip crown after rolling has been conducted for various cross shear regions in the roll bite. Results show that the calculated strip crown is in good agreement with Ameasured value, and the rolling force and strip crown decrease with an increase of cross shear regions, as well as the work roll edge kiss force and edge wear decrease. The friction also has an influence on the profile of the rolled thin strip.

Rolling Force Calculation for Strip Cold Rolling Based on Influence Function Method

2014 ◽  
Vol 633-634 ◽  
pp. 791-794 ◽  
Author(s):  
Hai Zhou ◽  
Jin Lan Bai
Keyword(s):  
Cold Rolling ◽  
Influence Function ◽  
Function Method ◽  
Rolling Force ◽  
Force Model ◽  
Strip Rolling ◽  
Influence Function Method ◽  
Roll Flattening ◽  
Calculation Results ◽  
Force Calculation

The rolling force calculation procedure of strip cold rolling is developed based on influence function method, with consideration of the couple of roll flattening model and rolling force model. With the procedure total rolling force and the distribution of rolling force per width of each pass for HC mill are calculated using sampling data obtained from actual strip rolling. Comparing the calculation results with actual measured value, it is shown that the calculated total rolling forces are similar to actual data, and the distribution of rolling force per width is consistent with the actual status. It proved that the calculation method introduced in this paper is an effective method to calculate rolling force, and it can be used in the process control of strip cold rolling mill.

scholarly journals Predicting model of thickness distribution and rolling force in angular rolling process based on influence function method

2018 ◽  
Vol 19 (3) ◽  
pp. 302 ◽  
Author(s):  
Pujun Hao ◽  
Anrui He ◽  
Wenquan Sun
Keyword(s):  
Influence Function ◽  
Shape Control ◽  
Function Method ◽  
Rolling Force ◽  
Control Strategies ◽  
Thickness Distribution ◽  
Rolling Process ◽  
Influence Function Method ◽  
Customized Production ◽  
Two Sides

As a special rolling method, angular rolling can meet various gauge demands of customized production. Due to the asymmetry of angular rolling, the rolling forces on the two sides of the roll system are different and the thickness distribution of the plate will be complex. To accurately obtain the thickness distribution and predict the rolling force during the angular rolling process, a mathematical model based on the influence function method is developed. An experiment is also adopted to validate the results of the rolling force. The results show that the change in the total rolling force comprises three stages: increasing, stable, and decreasing. During most of the rolling time, the rolling forces on the two sides of the mill are different. Then the predicted results of the rolling force are validated by experiment. After the first pass of angular rolling, a serious wedge appears at the head and tail ends of the plate. But when the angular rolling is finished, the wedge has almost disappeared. Considering the short calculation time, this model can be applied in the actual production process for making effective shape control strategies and flexible rolling schedules to meet various gauge demands of customized production.

Analysis of the Effect of Natural Slope Stability due to Tunnel Excavation in Mountainous Areas

2013 ◽  
Vol 690-693 ◽  
pp. 938-942
Author(s):  
Xu Li Liang ◽  
Fei Wang ◽  
Gang Li Hao
Keyword(s):  
Slope Stability ◽  
Influence Function ◽  
Function Method ◽  
Mountainous Area ◽  
Mountainous Areas ◽  
Tunnel Excavation ◽  
Natural Slope ◽  
Influence Function Method ◽  
Theoretical Results ◽  
Good Agreement

The effect of natural slope stability due to the tunnel excavation in mountainous areas is studied used influence function method, and one tunnel excavation project in Hebei province was analyzed, the theoretical results obtained are in good agreement with the real monitoring data, therefore, the influence function method can be effectively used to predict the ground displacement caused by tunnel excavation in mountainous area, which could provide the basis for the evaluation of the safety of such works.

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