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RISA Perspective on the Revival of Structural (In)Stability With Novel Opportunities for Function: From Buckliphobia to Buckliphilia
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Buckling of slender structures is traditionally regarded as a first route toward failure. Here, we provide an alternative perspective on a burgeoning movement where mechanical instabilities are exploited to devise new ...
Localized Structures in Indented Shells: A Numerical Investigation
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: We present results from a numerical investigation of the localization of deformation in thin elastomeric spherical shells loaded by differently shaped indenters. Beyond a critical indentation, the deformation of the shell ...
Comparing the Buckling Strength of Spherical Shells With Dimpled Versus Bumpy Defects
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: We investigate the effect of defect geometry in dictating the sensitivity of the critical buckling conditions of spherical shells under external pressure loading. Specifically, we perform a comparative study between shells ...
Defect–Defect Interactions in the Buckling of Imperfect Spherical Shells
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: We perform numerical experiments using the finite element method (FEM) to investigate the effect of defect–defect interactions on the pressure-induced buckling of thin, elastic, spherical shells containing two dimpled ...
A Geometric Model for the Coiling of an Elastic Rod Deployed Onto a Moving Substrate
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: We report results from a systematic numerical investigation of the nonlinear patterns that emerge when a slender elastic rod is deployed onto a moving substrate; a system also known as the elastic sewing machine (ESM). The ...
Extending the Reach of a Rod Injected Into a Cylinder Through Axial Rotation
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: We investigate continuous axial rotation as a mechanism for extending the reach of an elastic rod injected into a horizontal cylindrical constraint, prior to the onset of helical buckling. Our approach focuses on the ...
A Numerical Study on the Buckling of Near-Perfect Spherical Shells
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: We present the results from a numerical investigation using the finite element method to study the buckling strength of near-perfect spherical shells containing a single, localized, Gaussian-dimple defect whose profile is ...
Extending the Reach of a Rod Injected Into a Cylinder Through Distributed Vibration
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: We present results of an experimental investigation of a new mechanism for extending the reach of an elastic rod injected into a horizontal cylindrical constraint, prior to the onset of helical buckling. This is accomplished ...
The Geometric Role of Precisely Engineered Imperfections on the Critical Buckling Load of Spherical Elastic Shells
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: We study the effect of a dimplelike geometric imperfection on the critical buckling load of spherical elastic shells under pressure loading. This investigation combines precision experiments, finite element modeling, and ...
Technical Brief: Knockdown Factor for the Buckling of Spherical Shells Containing Large-Amplitude Geometric Defects
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: We explore the effect of precisely defined geometric imperfections on the buckling load of spherical shells under external pressure loading, using finite-element analysis that was previously validated through precision ...