Abstract
We propose a modified Laurent series for investigating the elastic field around holes/inclusions under plane deformation by dividing the classical Laurent series over the first derivative of the conformal mapping, which is justified from a mathematical point of view. Through a group of numerical examples concerning the stress concentration around holes of common shapes, the accuracy of the modified Laurent series is verified. It is also demonstrated that the use of the modified Laurent series as compared with the classical one generally leads to significantly more accurate results with even much fewer terms of the series. Utilizing the modified Laurent series, we revisit the stress field around an irregularly shaped elastic inclusion embedded in an infinite matrix and effectively eliminate the severe interfacial stress fluctuation reported earlier in the literature. More importantly, the modified Laurent series may be very useful for a highly accurate prediction of the physical field in particulate composites with densely packed inclusions.
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Acknowledgements
Li and Cai acknowledge the partial supports from the National Natural Science Foundation of China (Grant No. 52005256), the Natural Science Foundation of Jiangsu Province (Grant No. BK20190394), the Jiangsu Post-doctoral Research Funding Program (Grant No. 2020Z437) and the Priority Academic Program Development of Jiangsu Higher Education Institutions. Huang appreciates the support from the National Natural Science Foundation of China (Grant No. 11802040) and the Natural Science Foundation of the Jiangsu Higher Education Institutions of China (Grant No. 18KJB130001). Wang thanks the support from the National Natural Science Foundation of China (Grant No. 12002004).
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Li, C., Huang, C., Wang, S. et al. A modified Laurent series for hole/inclusion problems in plane elasticity. Z. Angew. Math. Phys. 72, 124 (2021). https://doi.org/10.1007/s00033-021-01552-4
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DOI: https://doi.org/10.1007/s00033-021-01552-4