Related Experiment Video
Updated: Jul 19, 2025
09:21
Experiments on Ultrasonic Lubrication Using a Piezoelectrically-assisted Tribometer and Optical Profilometer
Published on: September 28, 2015
12.6K
A fractional order friction model
Tianzhu Xun1, Pengchong Chen2, Shaohua Wang1
1School of Mechanical Science and Engineering, Huazhong University of Science and Technology, Wuhan, 430074, China.
ISA Transactions
|August 9, 2023
Summary
A novel fractional order friction model (FOFM) accurately captures complex friction behaviors like hysteresis and the Stribeck effect using only 7 parameters. This dynamic model offers superior accuracy and simplicity compared to existing models.
Area of Science:
- Mechanical Engineering
- Control Systems
- Physics of Materials
Background:
- Friction modeling is crucial for dynamic systems.
- Existing models often require numerous parameters and struggle with complex behaviors.
Purpose of the Study:
- To propose a new dynamic model for friction.
- To achieve accurate friction modeling with fewer parameters.
- To validate the model's performance against experimental data.
Main Methods:
- Developed a fractional order friction model (FOFM).
- Utilized particle swarm optimization for parameter identification.
- Conducted simulations and experimental validation.
Main Results:
- The FOFM accurately models sliding and pre-sliding friction.
- It captures hysteresis, non-local memory, Stribeck effect, and friction lag.
- The model uses only 7 parameters, outperforming the GMS model in accuracy and complexity.
Conclusions:
- The proposed FOFM offers a superior approach to friction modeling.
- Its reduced parameter count and enhanced accuracy make it suitable for various applications.
Related Concept Videos
01:07Frictional Force
8.1K
When a body is in motion, it encounters resistance because the body interacts with its surroundings. This resistance is known as friction, a common yet complex force whose behavior is still not completely understood. Friction opposes relative motion between systems in contact, but also allows us to move. Friction arises in part due to the roughness of surfaces in contact. For one object to move along a surface, it must rise to where the peaks of the surface can skip along the bottom of the...
8.1K
01:27Types of Friction Problems
566
Friction is an essential concept in physics, engineering, and everyday life. It is the force that opposes the relative motion or tendency of such motion between two surfaces in contact. One of the most common types of friction encountered in various applications is dry friction. Dry friction problems can be broadly categorized into three types, each with unique characteristics and challenges.
The first type of dry friction problem involves situations where there is no apparent impending motion....
The first type of dry friction problem involves situations where there is no apparent impending motion....
566
01:26Kinetic Friction
955
Consider a truck trying to pull a stationary car. As the truck exerts a force on the car, static friction is created at the point of contact between the two surfaces. This frictional force resists the car's movement and keeps it at rest. However, when the applied force by the truck surpasses the limiting static frictional force, an interesting phenomenon occurs. The frictional force at the interface reduces to a lower value, known as the kinetic frictional force. At this point, the car...
955
01:18Static Friction
800
Static friction is a force that opposes the relative motion or tendency of motion between two surfaces in contact. It plays a crucial role in our daily lives, from walking on the ground to driving a car.
For example, consider a scenario where a truck is connected to a car by a rope, ready to tow it along a road. When no external force is applied by the truck, the car remains stationary and is said to be in static equilibrium. In this case, the forces acting on the car, such as gravity and the...
For example, consider a scenario where a truck is connected to a car by a rope, ready to tow it along a road. When no external force is applied by the truck, the car remains stationary and is said to be in static equilibrium. In this case, the forces acting on the car, such as gravity and the...
800
01:05Static and Kinetic Frictional Force
16.0K
One of the simpler characteristics of sliding friction is that it is parallel to the contact surfaces between systems, and is always in a direction that opposes the motion or attempted motion of the systems relative to each other. If two systems are in contact and moving relative to one another, then the friction between them is called kinetic friction. For example, kinetic friction slows a hockey puck sliding on ice.
However, if two systems are in contact and are stationary relative to one...
However, if two systems are in contact and are stationary relative to one...
16.0K
01:21Friction: Problem Solving
258
Friction is an essential force that influences the motion of objects in daily life. Depending on the situation, it can be either beneficial or problematic. Consider a bus with a mass of three megagrams and its center of mass at a specific point, moving along a banked road at a constant speed. The coefficient of static friction between the tires and the road is 0.5. Find the maximum angle of the banked road at which the bus would not slip or tip.
Initially, a visual representation of the...
Initially, a visual representation of the...
258