Abstract
This research is motivated by the increase use of composite sandwich structures in a wide range of industries such as automotive, aerospace and civil infrastructure. To maximise stiffness at minimum weight, the paper develops a minimum weight optimization method for sandwich structure under combined torsion and bending loads. We first extend the minimum-weight design of sandwich structures under bending load to the case of torsional deformation and then present optimum solutions for the combined requirements of both bending and torsional stiffness. Three design cases are identified for a sandwich structure required to meet multiple design constraints of torsion and bending stiffness. The optimum solutions for all three cases are derived. To illustrate the newly developed optimum design solutions, numerical examples are presented for sandwich structures made of either isotropic face skins or orthotropic composite face skins.
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Acknowledgment
The financial supports of the Chinese Scholarship Council (Project ID: CSC 2009103812), the Fundamental Research Funds for the Central Universities, Wuhan University of Technology Innovation Research Fund of P.R. China (Project ID: 2010-JL-15) and the National Natural Science Foundation of China (Project ID: 50975160) are gratefully acknowledged. The authors would also like to acknowledge the support by the AutoCRC under the light-weight modular vehicle project.
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Li, X., Li, G., Wang, C.H. et al. Optimum Design of Composite Sandwich Structures Subjected to Combined Torsion and Bending Loads. Appl Compos Mater 19, 315–331 (2012). https://doi.org/10.1007/s10443-011-9204-0
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DOI: https://doi.org/10.1007/s10443-011-9204-0