How to obtain a more accurate maximum energy release rate for mixed mode fracture
Forces in Mechanics, ISSN: 2666-3597, Vol: 7, Page: 100077
2022
- 7Citations
- 1Captures
Metric Options: CountsSelecting the 1-year or 3-year option will change the metrics count to percentiles, illustrating how an article or review compares to other articles or reviews within the selected time period in the same journal. Selecting the 1-year option compares the metrics against other articles/reviews that were also published in the same calendar year. Selecting the 3-year option compares the metrics against other articles/reviews that were also published in the same calendar year plus the two years prior.
Example: if you select the 1-year option for an article published in 2019 and a metric category shows 90%, that means that the article or review is performing better than 90% of the other articles/reviews published in that journal in 2019. If you select the 3-year option for the same article published in 2019 and the metric category shows 90%, that means that the article or review is performing better than 90% of the other articles/reviews published in that journal in 2019, 2018 and 2017.
Citation Benchmarking is provided by Scopus and SciVal and is different from the metrics context provided by PlumX Metrics.
Example: if you select the 1-year option for an article published in 2019 and a metric category shows 90%, that means that the article or review is performing better than 90% of the other articles/reviews published in that journal in 2019. If you select the 3-year option for the same article published in 2019 and the metric category shows 90%, that means that the article or review is performing better than 90% of the other articles/reviews published in that journal in 2019, 2018 and 2017.
Citation Benchmarking is provided by Scopus and SciVal and is different from the metrics context provided by PlumX Metrics.
Article Description
Energy release rate (ERR) is considered one of the most widely employed fracture criteria. However, for mixed mode fracture situations, the exact computation of ERR for an infinitesimal branch crack is challenging. With some assumptions, Nuismer's theoretical expression (Int. J. Fracture. 11 (1975)) has been used to determine the ERR. In this work, we investigate its deviation. Based on St. Venant's theorem, it is first proved that the stress intensity factor (SIF) of a branch crack is almost independent of its length when the branch crack is small enough as compared to the main crack, which enables us to more accurately obtain the ERR and SIF of an infinitesimal branch crack by simulating a finitely short branch crack in finite element simulations. More accurate curves for the maximum ERR and the corresponding branch angle under any mixed mode are provided. From results of more accurate simulation, we find that Nuismer's model has the maximum difference of 11.2% in the maximum ERR and the 7.1% difference in the branch angle prediction. These are also the differences of predictions between the maximum circumferential stress criterion and the maximum energy release rate criterion.
Bibliographic Details
http://www.sciencedirect.com/science/article/pii/S2666359722000075; http://dx.doi.org/10.1016/j.finmec.2022.100077; http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=85126615658&origin=inward; https://linkinghub.elsevier.com/retrieve/pii/S2666359722000075; https://dx.doi.org/10.1016/j.finmec.2022.100077
Elsevier BV
Provide Feedback
Have ideas for a new metric? Would you like to see something else here?Let us know