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Effect of microcracking on the uniaxial tensile response of beta-eucryptite ceramics
- A constitutive model for the nonlinear or "pseudoplastic" mechanical behavior in a linear-elastic solid with thermally induced microcracks is developed and applied to experimental results. The model is termed strain dependent microcrack density approximation (SDMDA) and is an extension of the modified differential scheme that describes the slope of the stress-strain curves of microcracked solids. SDMDA allows a continuous variation in the microcrack density with tensile loading. Experimental uniaxial tensile response of beta-eucryptite glass and ceramics with controlled levels of microcracking is reported. It is demonstrated that SDMDA can well describe the extent of non-linearity in the experimental uniaxial tensile response of beta-eucryptite with varying levels of microcracking. The advantages of the SDMDA are discussed in regard to tensile loading.
Author details: | Ryan C. CooperORCiD, Giovanni BrunoORCiDGND, M. R. Wheeler, A. Pandey, T. R. Watkins, A. Shyarn |
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DOI: | https://doi.org/10.1016/j.actamat.2017.06.033 |
ISSN: | 1359-6454 |
ISSN: | 1873-2453 |
Title of parent work (English): | Acta Materialia |
Subtitle (English): | Experiments and constitutive model |
Publisher: | Elsevier |
Place of publishing: | Oxford |
Publication type: | Article |
Language: | English |
Date of first publication: | 2017/06/15 |
Publication year: | 2017 |
Release date: | 2022/04/11 |
Tag: | behavior |
Volume: | 135 |
Number of pages: | 11 |
First page: | 361 |
Last Page: | 371 |
Funding institution: | U.S. Department of Energy, Office of Vehicle Technologies, as part of the Propulsion Materials Program |
Organizational units: | Mathematisch-Naturwissenschaftliche Fakultät / Institut für Physik und Astronomie |
DDC classification: | 5 Naturwissenschaften und Mathematik / 53 Physik / 530 Physik |
Peer review: | Referiert |