caa a22 4500 445811943 CHVBK 20180317145214.0 cr unu---uuuuu 170323e20111001xx s 000 0 eng 10.1007/s00419-010-0491-y doi (NATIONALLICENCE)springer-10.1007/s00419-010-0491-y Postbuckling of imperfect rectangular composite plates under inplane shear closed-form approximate solutions [Elektronische Daten] [Christian Mittelstedt, Henrike Erdmann, Kai-Uwe Schröder] In this paper, the postbuckling behavior of rectangular orthotropic laminated composite plates with initial imperfections under inplane shear load is investigated in a closed-form analytical manner. The plates under consideration are assumed to be infinitely long in the longitudinal direction. At the longitudinal edges, two different sets of boundary conditions are considered, specifically 1) simply supported edges and 2) fully clamped edges. Using Timoshenko-type shape functions for both the initial bifurcational buckling analysis and the subsequent Marguerre-type postbuckling studies, closed-form analytical solutions for the buckling loads and for the postbuckling state variables are derived. A comparison with geometrically non-linear finite element computations shows that the derived analysis approaches are suitable for postbuckling studies in load ranges not too far beyond bifurcational buckling as they are currently relevant for e.g., composite airframe structural analysis and design. Due to their strictly closed-form analytical nature, the presented analysis methods can be used conveniently in engineering practice for all application purposes where computational time is a crucial factor, especially for preliminary analysis and design or optimization procedures. Springer-Verlag, 2010 Composites nationallicence Laminates nationallicence Buckling nationallicence Postbuckling nationallicence Stability nationallicence Shear nationallicence Mittelstedt Christian ELAN GmbH, Team Methods and Tools, Karnapp 25, 21079, Hamburg, Germany aut Erdmann Henrike ELAN GmbH, Team Methods and Tools, Karnapp 25, 21079, Hamburg, Germany aut Schröder Kai-Uwe Johannes Kepler University Linz, Altenbergerstr. 69, 4040, Linz, Austria aut Archive of Applied Mechanics Springer-Verlag 81/10(2011-10-01), 1409-1426 0939-1533 81:10<1409 2011 81 419 https://doi.org/10.1007/s00419-010-0491-y text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s00419-010-0491-y text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Mittelstedt Christian ELAN GmbH, Team Methods and Tools, Karnapp 25, 21079, Hamburg, Germany aut NATIONALLICENCE 700 1- Erdmann Henrike ELAN GmbH, Team Methods and Tools, Karnapp 25, 21079, Hamburg, Germany aut NATIONALLICENCE 700 1- Schröder Kai-Uwe Johannes Kepler University Linz, Altenbergerstr. 69, 4040, Linz, Austria aut NATIONALLICENCE 773 0- Archive of Applied Mechanics Springer-Verlag 81/10(2011-10-01), 1409-1426 0939-1533 81:10<1409 2011 81 419 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer