Featured Research

from universities, journals, and other organizations

Explanation for friction: Origin of sliding friction between solid objects

Date:
May 28, 2012
Source:
Technical Research Centre of Finland (VTT)
Summary:
Friction is a key phenomenon in applied physics, whose origin has been studied for centuries. Until now, it has been understood that mechanical wear-resistance and fluid lubrication affect friction, but the fundamental origin of sliding friction has been unknown. Scientists have now explained the origin of sliding friction between solid objects. According to his theory, the amount of friction depends on the surface energy of the materials in question.

Friction is a key phenomenon in applied physics, whose origin has been studied for centuries. Until now, it has been understood that mechanical wear-resistance and fluid lubrication affect friction, but the fundamental origin of sliding friction has been unknown. Dr. Lasse Makkonen, Principal Scientist at VTT Technical Research Centre of Finland, has now presented an explanation for the origin of sliding friction between solid objects.

According to his theory, the amount of friction depends on the surface energy of the materials in question.

Friction has a substantial effect on many everyday phenomena, such as energy consumption. Makkonen's model is the first to enable quantitative calculation of the friction coefficient of materials.

According to Makkonen's theory, the amount of friction is related to the material's surface energy. Friction originates in nanoscale contacts, as the result of new surface formation. The theory explains the generation of frictional force and frictional heating in dry contact. It can be applied in calculating the friction coefficient of various material combinations.

The model also enables the manipulation of friction by selecting certain surface materials or materials used in lubrication layers, on the basis of the surface energy between them.

Makkonen's theory on sliding friction was published in the journal AIP Advances of the American Institute of Physics. The research was funded by the Academy of Finland and the Jenny and Antti Wihuri Foundation.


Story Source:

The above story is based on materials provided by Technical Research Centre of Finland (VTT). Note: Materials may be edited for content and length.


Journal Reference:

  1. Lasse Makkonen. A thermodynamic model of sliding friction. AIP Advances, 2012; 2 (1): 012179 DOI: 10.1063/1.3699027

Cite This Page:

Technical Research Centre of Finland (VTT). "Explanation for friction: Origin of sliding friction between solid objects." ScienceDaily. ScienceDaily, 28 May 2012. <www.sciencedaily.com/releases/2012/05/120528100250.htm>.
Technical Research Centre of Finland (VTT). (2012, May 28). Explanation for friction: Origin of sliding friction between solid objects. ScienceDaily. Retrieved September 21, 2014 from www.sciencedaily.com/releases/2012/05/120528100250.htm
Technical Research Centre of Finland (VTT). "Explanation for friction: Origin of sliding friction between solid objects." ScienceDaily. www.sciencedaily.com/releases/2012/05/120528100250.htm (accessed September 21, 2014).

Share This



More Matter & Energy News

Sunday, September 21, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Thousands March in NYC Over Climate Change

Thousands March in NYC Over Climate Change

AP (Sep. 21, 2014) — Accompanied by drumbeats, wearing costumes and carrying signs, thousands of demonstrators filled the streets of Manhattan and other cities around the world on Sunday to urge policy makers to take action on climate change. (Sept. 21) Video provided by AP
Powered by NewsLook.com
What This MIT Sensor Could Mean For The Future Of Robotics

What This MIT Sensor Could Mean For The Future Of Robotics

Newsy (Sep. 20, 2014) — MIT researchers developed a light-based sensor that gives robots 100 times the sensitivity of a human finger, allowing for "unprecedented dexterity." Video provided by Newsy
Powered by NewsLook.com
MIT BioSuit A New Take On Traditional Spacesuits

MIT BioSuit A New Take On Traditional Spacesuits

Newsy (Sep. 19, 2014) — The MIT BioSuit could be an alternative to big, bulky traditional spacesuits, but the concept needs some work. Video provided by Newsy
Powered by NewsLook.com
New Music With Recycled Instruments at Colombia Fest

New Music With Recycled Instruments at Colombia Fest

AFP (Sep. 19, 2014) — Jars, bottles, caps and even a pizza box, recovered from the trash, were the elements used by four musical groups at the "RSFEST2014 Sonorities Recycling Festival", in Colombian city of Cali. Duration: 00:49 Video provided by AFP
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
 
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:  

Breaking News:
from the past week

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:  

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile iPhone Android Web
Follow Facebook Twitter Google+
Subscribe RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins