Buckling of carbon fiber composite pyramidal truss core sandwich columns
LOU Jia, WANG Bing, MA Li, WU Lin-zhi
Center for Composite Materials and Structures, Harbin Institute of Technology, Harbin 150001, China
Abstract:
This paper deals with the theoretical prediction of global buckling loads for carbon fiber composite pyramidal truss core sandwich columns. Different from thin plate structures, transverse shear effect can not be neglected for sandwich structures. In addition, the attributes of the laminated face sheets are considered in the present paper. A zig-zag displacement approximation is made. Based on the principle of minimum potential energy, equilibrium equations and boundary conditions are derived via the variational method. The critical buckling loads under various boundary conditions are presented. In order to validate the reasonableness of the equivalent-core method, the strain energies stored in the actual discrete truss members and the equivalent continuous homogenous core layer are calculated respectively and compared, and a good agreement is obtained. The proposed analytical method is verified by comparing with the published theoretical predictions and experimental results.
Key words: composites sandwich structures buckling
DOI：10.11916/j.issn.1005-9113.2012.06.007
Clc Number:V214; V229; V214
Fund:
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Buckling of carbon fiber composite pyramidal truss core sandwich columns
本站小编 哈尔滨工业大学/2019-10-23
相关话题/Buckling carbon fiber composite pyramidal
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