Stochastic finite element models of foam materials
2005 (English)In: SANDWICH STRUCTURES7: ADVANCING WITH SANDWICH STRUCTURES AND MATERIALS / [ed] Thomsen, OT; Bozhevolnaya, E; Lyckegaard, A, 2005, 935-943 p.Conference paper (Refereed)
Driven by the desire to understand the influence of various mechanical properties and geometric features of foam materials, on the stiffness, failure mechanisms and fatigue life of sandwich materials, 3D finite element models of amorphous cellular structures have recently been developed and analyzed. Different algorithms were used to generate seed points of Voronoi tessellations, such as randomly distorted regular lattice distributions and totally random distributions. Periodic boundary conditions were used on representative volume elements containing hundreds of cells. Some comparison with experimental data from real foam materials was made and the agreement was found to be good. In the presented paper discrepancies between the used models and real foams are discussed and it is concluded that the adopted approach has substantial potential although there are some obvious routes for further improvement.
Place, publisher, year, edition, pages
2005. 935-943 p.
finite element, foam, cellular, stochastic, Voronoi, periodic
IdentifiersURN: urn:nbn:se:kth:diva-42801DOI: 10.1007/1-4020-3848-8_94ISI: 000233234700094ISBN: 1-4020-3444-XOAI: oai:DiVA.org:kth-42801DiVA: diva2:447609
7th International Conference on Sandwich Structures Location: Aalborg Univ, Aalborg, DENMARK Date: AUG 29-31, 2005
QC 201110122011-10-122011-10-122016-05-16Bibliographically approved