Sadek, E.; Fouad, N.A.: Finite element modeling of compression behavior of extruded polystyrene foam using X-ray tomography. In: Journal of Cellular Plastics 49 (2013), Nr. 2, S. 161-191. DOI: https://doi.org/10.1177/0021955X13477436
Abstract: | |
Extruded polystyrene rigid foams have attracted a great attention as a superior load-bearing thermal insulation material since their implementation in building construction. One of the most common application areas of this type of thermal insulation material is under raft foundations, where the foam normally undergoes high levels of compression loads. The purpose of this research is to determine how to simulate and optimize the structural response of extruded polystyrene under compression stresses. The optimization has been achieved through investigating the relation between the foam microstructure and the global mechanical properties. The foam was first examined using X-ray tomography imaging technique to acquire some morphological information about the microstructure. The obtained morphological data of extruded polystyrene boards were then utilized to develop microstructure-based finite element models based on the so-called idealized realistic Kelvin cell. The finite element simulation was accomplished with the help of the nanoindentation technology to explore the mechanical properties of the cell wall material. The finite element models were validated by comparisons between the simulated and the experimental results. It has been found that the mechanical properties of the foam in different loading directions can be adequately simulated using the approach of the idealized realistic Kelvin cell. With the help of these models, a parameter study was carried out. This study included the effect of cell size and cell anisotropy on the mechanical response of extruded polystyrene boards under compression stresses. Charts relating between the foam microstructure characteristics and the compression behavior were generated based on the parametric study. © The Author(s) 2013. Reprints and permissions: sagepub.co.uk/journalsPermissions. nav. | |
License of this version: | Es gilt deutsches Urheberrecht. Das Dokument darf zum eigenen Gebrauch kostenfrei genutzt, aber nicht im Internet bereitgestellt oder an Außenstehende weitergegeben werden. Dieser Beitrag ist aufgrund einer (DFG-geförderten) Allianz- bzw. Nationallizenz frei zugänglich. |
Document Type: | Article |
Publishing status: | publishedVersion |
Issue Date: | 2013 |
Appears in Collections: | Fakultät für Bauingenieurwesen und Geodäsie |
pos. | country | downloads | ||
---|---|---|---|---|
total | perc. | |||
1 | Germany | 192 | 32.43% | |
2 | United States | 76 | 12.84% | |
3 | No geo information available | 33 | 5.57% | |
4 | France | 26 | 4.39% | |
5 | China | 20 | 3.38% | |
6 | Russian Federation | 18 | 3.04% | |
7 | Iran, Islamic Republic of | 17 | 2.87% | |
8 | Vietnam | 15 | 2.53% | |
9 | Czech Republic | 15 | 2.53% | |
10 | Canada | 12 | 2.03% | |
other countries | 168 | 28.38% |
Hinweis
Zur Erhebung der Downloadstatistiken kommen entsprechend dem „COUNTER Code of Practice for e-Resources“ international anerkannte Regeln und Normen zur Anwendung. COUNTER ist eine internationale Non-Profit-Organisation, in der Bibliotheksverbände, Datenbankanbieter und Verlage gemeinsam an Standards zur Erhebung, Speicherung und Verarbeitung von Nutzungsdaten elektronischer Ressourcen arbeiten, welche so Objektivität und Vergleichbarkeit gewährleisten sollen. Es werden hierbei ausschließlich Zugriffe auf die entsprechenden Volltexte ausgewertet, keine Aufrufe der Website an sich.