Resolution Of The Twentieth Century Conundrum In Elastic Stability
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Resolution Of The Twentieth Century Conundrum In Elastic Stability
Author: Isaac E Elishakoff
language: en
Publisher: World Scientific
Release Date: 2014-05-29
There have been stability theories developed for beams, plates and shells — the most significant elements in mechanical, aerospace, ocean and marine engineering. For beams and plates, the theoretical and experimental values of buckling loads are in close vicinity. However for thin shells, the experimental predictions do not conform with the theory, due to presence of small geometric imperfections that are deviations from the ideal shape.This fact has been referred to in the literature as ‘embarrassing’, ‘paradoxical’ and ‘perplexing’. Indeed, the popular adage, “In theory there is no difference between theory and practice. In practice there is”, very much applies to thin shells whose experimental buckling loads may constitute a small fraction of the theoretical prediction based on classical linear theory; because in practice, engineers use knockdown factors that are not theoretically substantiated.This book presents a uniform approach that tames this prima-donna-like and capricious behavior of structures that has been dubbed the ‘imperfection sensitivity’ — thus resolving the conundrum that has occupied the best minds of elastic stability throughout the twentieth century.
Colourful Views Of Stability And Chaos
Author: J Michael T Thompson
language: en
Publisher: World Scientific
Release Date: 2025-05-07
This book provides a glimpse of the author JMT Thompson's lifetime work on the buckling of thin shell structures, the general theory of elastic stability, chaos theory and some aspects of nonlinear dynamics relevant to the escape from a potential well.Besides the traditional topics that will be useful to readers who are engineers and researchers, the compilation also includes a paper on climate predictions, showcasing the prolific interest of the author who has published more than 200 research papers throughout his scientific career. The introductory chapter includes the biographical details. Well-illustrated by many colourful figures and photographs, the reader will find a lively introduction to topics in the fields of physics, engineering and nonlinear dynamics.
Shell and Spatial Structures
This volume collects the latest advances, innovations, and applications in the field of shell and spatial structures, as presented by leading international researchers at the 2nd Italian Workshop on Shell and Spatial Structures (IWSS), held in Turin, Italy on June 26-28, 2023. The conference was meant to give an overview on experimental and theoretical studies, analysis methods and approaches for the design, computational form finding, structural optimization, manufacturing, testing and maintenance techniques and historical reviews of all types of shell and spatial structures. These include, but are not limited to, tension and membrane structures, framed and lattice structures, gridshells and active-bending structures, shell roofs, tensegrity structures, pneumatic and inflatable structures, active and deployable structures, concrete, metal, masonry, timber and bio-based, spatial structures. The contributions, which were selected by means of a rigorous international peer-review process, present a wealth of exciting ideas that will open novel research directions and foster multidisciplinary collaboration among different specialists.