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Related Concept Videos

Temperature Dependent Deformation01:12

Temperature Dependent Deformation

138
In a nonhomogeneous rod made up of steel and brass, restrained at both ends and subjected to a temperature change, several steps are involved in calculating the stress and compressive load. Due to the problem's static indeterminacy, one end support is disconnected, allowing the rod to experience the temperature change freely. Next, an unknown force is applied at the free end, triggering deformations in the rod's steel and brass portions. These deformations are then calculated and added...
138
Stress Concentrations in Circular Shafts01:18

Stress Concentrations in Circular Shafts

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Consider the elastic torsion formula, which applies to a circular shaft with a consistent cross-section. This formula assumes that the shaft's ends are loaded with rigid plates firmly attached. However, in many cases, torques are applied to the shaft through mechanisms like flange couplings or gears, which are connected by keys inserted into keyways. This application method modifies the stress distribution near the point of torque application, causing it to deviate from the distributions...
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Bearings: Problem Solving01:24

Bearings: Problem Solving

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Understanding the calculations and concepts related to double-collar bearings is essential for engineers and designers to optimize the performance of these components in various applications. By analyzing the bearing under different conditions, one can ensure that it can withstand the forces and moments experienced during operation. This knowledge enables better decision-making when designing and selecting bearings for specific purposes and configurations. Consider a double-collar bearing with...
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Rolling Resistance01:21

Rolling Resistance

271
When a solid cylinder rolls steadily on a rigid surface, the normal force applied by the surface on the cylinder is perpendicular to the tangent at the contact point. However, since no materials are entirely rigid, the surface's reaction to the cylinder involves a range of normal pressures.
For instance, imagine a hard cylinder rolling on a comparatively soft surface. The cylinder's weight compresses the surface beneath it. As the cylinder moves, the material in front of it slows down...
271
Rolling Resistance: Problem Solving01:17

Rolling Resistance: Problem Solving

293
Rolling resistance, also known as rolling friction, is the force that resists the motion of a rolling object, such as a wheel, tire, or ball, when it moves over a surface. It is caused by the deformation of the object and the surface in contact with each other, as well as other factors like internal friction, hysteresis, and energy losses within the materials. Rolling resistance opposes the object's motion, requiring additional energy to overcome it and maintain movement. In practical...
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Stresses under Combined Loadings01:23

Stresses under Combined Loadings

140
When analyzing a bent tube with a circular cross-section subjected to multiple forces, it is crucial to determine the stress distribution in order to maintain structural integrity under varied load conditions.
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Related Experiment Video

Updated: Jun 2, 2025

A Novel Biaxial Testing Apparatus for the Determination of Forming Limit under Hot Stamping Conditions
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ATKB-PID: an adaptive control method for micro tension under complex hot rolling conditions.

Xinkai Xu1,2,3, Xiangrong Song1,2,3, Zheng Qi4,5

  • 1State Key Laboratory of Metallurgical Intelligent Manufacturing System, Beijing, 100071, China.

Scientific Reports
|January 15, 2025
PubMed
Summary

This study introduces an adaptive micro tension control method for hot rolling, improving width accuracy and production stability. The new approach enhances control system performance in dynamic industrial environments.

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Area of Science:

  • Materials Science
  • Mechanical Engineering
  • Control Systems

Background:

  • Current hot rolling roughing microtension control systems lack adaptive parameter adjustment.
  • This limitation negatively impacts width accuracy and production stability.

Purpose of the Study:

  • To develop an adaptive micro tension control method for hot rolling roughing processes.
  • To improve width accuracy and production stability by addressing limitations in existing control systems.

Main Methods:

  • Introduction of the ATKB-PID adaptive micro tension control method.
  • Integration of a linear attention layer and K-Nearest Neighbors (KNN) algorithm for parameter prediction.
  • Development of an objective function tailored to production indices.

Main Results:

  • The ATKB-PID method demonstrated a smaller steady-state error compared to existing controllers.
  • The proposed method achieved a quicker adjustment time.
  • Experimental validation confirmed the effectiveness of the ATKB-PID approach.

Conclusions:

  • The ATKB-PID control method is suitable for the dynamic demands of thermal roughing microtension control.
  • This adaptive approach shows significant potential for industrial application in hot rolling.