High Strain-Rate Compressive Properties and Constitutive Modeling of Bulk Structural Adhesives
| Autor: | Norfazrina Hayati Mohd Yatim, Kenji Nakai, Takashi Yokoyama |
|---|---|
| Rok vydání: | 2012 |
| Předmět: |
Materials science
Strain (chemistry) Bar (music) Surfaces and Interfaces General Chemistry Split-Hopkinson pressure bar Epoxy Strain rate Methacrylate Surfaces Coatings and Films Stress (mechanics) Mechanics of Materials visual_art Materials Chemistry visual_art.visual_art_medium Adhesive Composite material |
| Zdroj: | The Journal of Adhesion. 88:471-486 |
| ISSN: | 1545-5823 0021-8464 |
| DOI: | 10.1080/00218464.2012.660813 |
| Popis: | The present paper is concerned with constitutive modeling of two different bulk structural adhesives at strain rates from 10−3 to 103/s using a modified Ramberg-Osgood equation. Commercially available two-part methacrylate structural adhesive and epoxy structural adhesive were tested. The high strain-rate compressive stress-strain loops for the two bulk structural adhesives were determined with a conventional split Hopkinson pressure bar using a tapered striker bar. Static and intermediate rate compressive stress-strain curves were measured in an Instron® testing machine. The five parameters for the modified Ramberg-Osgood equation were determined by fitting to the experimental stress-strain data using a least-squares fit. The compressive stress-strain curves at three different strain rates predicted from the modified Ramberg-Osgood model were compared with the experimental results. It is shown that the compressive stress-strain curves up to the maximum stress can successfully be predicted by the modified... |
| Databáze: | OpenAIRE |
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