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This is a pre-copyedited, author-produced version of an article accepted for publication in Acta Mechanica Sinica/Lixue Xuebao following peer review. The version of record is available https://link.springer.com/article/10.1007%2Fs10409-019-00909-3
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© The Chinese Society of Theoretical and Applied Mechanics and Springer-Verlag GmbH Germany, part of Springer Nature 2019