Abstract
This study defines an imaginary stiffness G to represent the overall stiffness for the grid shells. Through the linear buckling analysis, four kinds of grid patterns with different geometric parameters, in total 9100 cases, are analyzed to get their buckling load factors \({\lambda}\). Based on the regression analysis, four envelope equations are fitted with G, \({\lambda}\) and geometric parameters. The applicability of the equations is illustrated by the distribution of the difference \({r}_{\Delta{\lambda}}\).
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The author LIU would like to show his sincere gratitude to ASSURAN International Scholarship Foundation for supporting his life of studying abroad.
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Liu, B., Chen, PS., Jin, J., Yan, X. (2024). Approximate Estimation for Global Buckling Load of Cylindrical Single-Layer Grid Shells: Fitting of Envelope Equations Based on Regression Analysis. In: Strauss, E. (eds) Proceedings of the 7th International Conference on Civil Engineering. ICOCE 2023. Lecture Notes in Civil Engineering, vol 371. Springer, Singapore. https://doi.org/10.1007/978-981-99-4045-5_21
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DOI: https://doi.org/10.1007/978-981-99-4045-5_21
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