Featured Research

from universities, journals, and other organizations

New modelling technique could bypass the need for engineering prototypes

Date:
November 19, 2013
Source:
University of Bristol
Summary:
A new modelling technique has been developed that could eliminate the need to build costly prototypes, which are used to test engineering structures such as airplanes.

A new modelling technique has been developed that could eliminate the need to build costly prototypes, which are used to test engineering structures such as aeroplanes.

Related Articles


The study, by Dr Rσbert Szalai at the University of Bristol, is published in the latest issue of the Proceedings of the Royal Society A.

Most engineering structures, for example airplane landing gear, jet engines and gearboxes, involve friction and impact among their components. Traditionally these harsh phenomena are difficult to design for and introduce a great deal of uncertainty in the final product.

The new research offers an alternative view on this problem by providing a modelling technique that allows for more accurate predictions than methods currently available. The proposed method also offers a better understanding of contact mechanics, which might be used to achieve a better design.

Dr Rσbert Szalai, Lecturer in the Department of Engineering Mathematics, said: "One of the greatest concerns of engineers is modelling friction and impact.

"Building prototypes to test engineering structures can be extremely expensive and this new modelling technique could mean a prototype does not need to be built."

Alan Champneys, Professor of Applied Non-linear Mathematics in the Department of Engineering Mathematics, added: "Strongly nonlinear behaviour, such as stick-slip motion and impact, are a huge cause of uncertainty in engineering systems.

"The findings from this paper provide a key breakthrough in research that is being pursued by a consortium of major universities and industrialists to address these problems as part of an EPSRC programme grant."

In the paper, the researcher has presented a general mechanical model and described a model reduction technique. The new model includes a memory term to account for effects that traditional models ignore. The study has also discussed the convergence of the method and its implications to non-smooth systems.

The derivation of the memory term is illustrated through the examples of a pre-tensed string and a cantilever beam. The paper has used the example of a bowed string and has demonstrated the properties of the transformed equation of motion, in particular its convergence as the number of vibration modes goes to infinity.


Story Source:

The above story is based on materials provided by University of Bristol. Note: Materials may be edited for content and length.


Journal Reference:

  1. Rσbert Szalai. Modelling elastic structures with strong nonlinearities with application to stick–slip friction. Proceedings of the Royal Society A, 20 November 2013

Cite This Page:

University of Bristol. "New modelling technique could bypass the need for engineering prototypes." ScienceDaily. ScienceDaily, 19 November 2013. <www.sciencedaily.com/releases/2013/11/131119193912.htm>.
University of Bristol. (2013, November 19). New modelling technique could bypass the need for engineering prototypes. ScienceDaily. Retrieved February 28, 2015 from www.sciencedaily.com/releases/2013/11/131119193912.htm
University of Bristol. "New modelling technique could bypass the need for engineering prototypes." ScienceDaily. www.sciencedaily.com/releases/2013/11/131119193912.htm (accessed February 28, 2015).

Share This


More From ScienceDaily



More Matter & Energy News

Saturday, February 28, 2015

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Elon Musk's Hyperloop Moves Forward

Elon Musk's Hyperloop Moves Forward

Buzz60 (Feb. 27, 2015) — Zipping around at 800-miles an hour is coming closer to reality in California. An entire town is being built around Elon Musk&apos;s Hyperloop concept and it wants you to stop in for a ride when it&apos;s ready. Brett Larson is on board. Video provided by Buzz60
Powered by NewsLook.com
Vibrating Bicycle Senses Traffic

Vibrating Bicycle Senses Traffic

Reuters - Innovations Video Online (Feb. 26, 2015) — Dutch scientists have developed a smart bicycle that uses sensors, wireless technology and video to warn riders of traffic dangers. Ben Gruber reports. Video provided by Reuters
Powered by NewsLook.com
In Japan, Robot Dogs Are for Life -- And Death

In Japan, Robot Dogs Are for Life -- And Death

AFP (Feb. 25, 2015) — Robot dogs are the perfect pet for some in Japan who go to repairmen-turned-vets when their pooch breaks down - while a full Buddhist funeral ceremony awaits those who don&apos;t make it. Duration: 02:40 Video provided by AFP
Powered by NewsLook.com
London Show Dissects History of Forensic Science

London Show Dissects History of Forensic Science

AFP (Feb. 25, 2015) — Forensic science, which has fascinated generations with its unravelling of gruesome crime mysteries, is being put under the microscope in an exhibition of real criminal investigations in London. Duration: 00:53 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:

Strange & Offbeat Stories

 

Space & Time

Matter & Energy

Computers & Math

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