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Iterative solution technique in selective mass scaling
Linköping University, The Institute of Technology. Linköping University, Department of Mechanical Engineering, Solid Mechanics.
2006 (English)Article in journal (Refereed) Published
Abstract [en]

Selective mass scaling in explicit finite element analyses is a method to increase the critical time step by modifying the mass matrix while at the same time leaving the rigid body translational behaviour unaffected. In an earlier work it has been suggested to calculate the global acceleration vector as a = M̄-1 f where M̄ is the selectively scaled global mass matrix and where f is the global node force vector. However, dealing with large models, the mass matrix inversion is computationally costly and the storage of M̄ -1 requires a considerable amount of memory space. In this context it is here shown that an iterative solution technique, where M̄a = f is solved every time step, can be an attractive alternative to inverting the mass matrix. Copyright © 2005 John Wiley & Sons, Ltd.

Place, publisher, year, edition, pages
2006. Vol. 22, no 1, 77-82 p.
National Category
Engineering and Technology
URN: urn:nbn:se:liu:diva-33938DOI: 10.1002/cnm.806Local ID: 20031OAI: diva2:254786
Available from: 2009-10-10 Created: 2009-10-10 Last updated: 2011-01-11

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Simonsson, Kjell
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The Institute of TechnologySolid Mechanics
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ReferencesLink to record
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