Buckling, postbuckling and imperfection-sensitivity: Old questions and some new answers.

*(English)*Zbl 1158.74361Summary: From the point-of-view of economy and safety it is desirable to employ structural configurations with a favorable strength-to-weight ratio and a sufficiently small imperfection-sensitivity. The presentation focuses on two examples falling into this category: The axially compressed cylindrical shell filled with – and/or surrounded by – a compliant core, and auxetic structures. Both exhibit unexpected aspects in their load-carrying behavior and have a significant weight-savings potential.

##### MSC:

74G60 | Bifurcation and buckling |

74H55 | Stability of dynamical problems in solid mechanics |

74K25 | Shells |

##### Keywords:

buckling; postbuckling; imperfection-sensitivity; circular cylindrical shell; axial compression; compliant core; auxetic structures
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\textit{H. Obrecht} et al., Comput. Mech. 37, No. 6, 498--506 (2006; Zbl 1158.74361)

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