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Mesh-Less Analysis of Products: A Revolution within Computer Based Design Analysis
Halmstad University, School of Business, Engineering and Science, The Rydberg Laboratory for Applied Sciences (RLAS).ORCID iD: 0000-0002-6438-2621
2019 (English)In: Proceedings of the ASME 2019 International Mechanical Engineering Congress and Exposition  (IMECE2019): November 11-14, 2019, Salt Lake City, UT, USA, 2019, Vol. 1, article id 11550Conference paper, Published paper (Refereed)
Abstract [en]

For many years, FEA (finite element analysis) has been the dominant way of evaluating the mechanical properties of products. Engineers and design analysts are well familiar with the technology, and it is used for a lot of different types of phenomena. It is not easy to use FEA as it requires a lot of knowledge and skills for the analysis to be successful. One of the many problems is that it quickly becomes a large model with a large number of equations that have to be solved. A computer with a large internal memory, a fast CPU and fast hard disk drives is expensive to purchase and to keep up to date.

Another problem is when thin-walled solids have to be analyzed. You usually need 2-3 elements in thickness to be able to obtain all stresses, which requires a lot of elements and nodes and makes the computations large or even too large. To solve these types of problem, a conversion to surfaces has to be made, where 2D shell elements may be used. Converting solids to surfaces can be demanding and time-consuming. It is a compromise, but it is solvable as a 2D model. As we all know, all body-in-white, e.g., automotive and aerospace industry, is analyzed by this method.

A new type of software has recently reached the market, mesh-less design analysis, which makes it possible to perform design analysis in all kind of solids, very quickly and by using much less solving time and computer power. As this type of software doesn’t mesh the geometry, much time can be saved both on the geometry but also on waiting time for the problem to be solved. The main question is, “is it too good to be true”?

In this paper, the focus is on comparing two types of design analysis software, traditional FEA, and mesh-less design analysis. Different samples of design problems have been analyzed and compared; results and conclusions are reported. © 2019 by ASME

Place, publisher, year, edition, pages
2019. Vol. 1, article id 11550
National Category
Other Mechanical Engineering
Identifiers
URN: urn:nbn:se:hh:diva-41020OAI: oai:DiVA.org:hh-41020DiVA, id: diva2:1372456
Conference
ASME 2019 International Mechanical Engineering Congress and Exposition (IMECE2019), Salt Lake City, UT, USA, November 11-14, 2019
Available from: 2019-11-23 Created: 2019-11-23 Last updated: 2019-11-25

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Petersson, Håkan

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