A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Nonlinear bending and collapse of composite tubes
Cylindrical tubes of moderate wall thickness, such as those proposed for the original space station truss, may fail due to the gradual collapse of the tube cross-section as it distorts under load. Sometimes referred to as the Brazier instability, it is a nonlinear phenomenon. This paper presents an extension of an approximate closed-form solution of the collapse of isotropic tubes subject to end moments developed by Reissner in 1959 to include specially orthotropic material. The close-form solution was verified by an extensive nonlinear finite element analysis of the collapse of long tubes under applied end moments for radius-to-thickness ratios and composite layups in the range proposed for recent space station truss framework designs. The finite element analysis validated the assumption of inextensional deformation of the cylindrical cross-section and the approximation of the material as specially orthotropic.
Nonlinear bending and collapse of composite tubes
Cylindrical tubes of moderate wall thickness, such as those proposed for the original space station truss, may fail due to the gradual collapse of the tube cross-section as it distorts under load. Sometimes referred to as the Brazier instability, it is a nonlinear phenomenon. This paper presents an extension of an approximate closed-form solution of the collapse of isotropic tubes subject to end moments developed by Reissner in 1959 to include specially orthotropic material. The close-form solution was verified by an extensive nonlinear finite element analysis of the collapse of long tubes under applied end moments for radius-to-thickness ratios and composite layups in the range proposed for recent space station truss framework designs. The finite element analysis validated the assumption of inextensional deformation of the cylindrical cross-section and the approximation of the material as specially orthotropic.
Nonlinear bending and collapse of composite tubes
Nichtlineares Biegen und Versagen zusammengesetzter Rohre
Stockwell, A.E. (author)
MSC World User's Conference, 1992 ; 2 ; 1-16
1992
16 Seiten, 12 Bilder, 1 Tabelle, 6 Quellen
Conference paper
English
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