Buckling-induced smart applications: recent advances and trends
TL;DR: In this article, the authors highlight the recent advances in buckling-induced smart applications and explain why buckling responses have certain advantages and are especially suitable for these particular applications, and identify potential research avenues and emerging trends for using buckling and other elastic instabilities for future innovations.
Abstract: A paradigm shift has emerged over the last decade pointing to an exciting research area dealing with the harnessing of elastic structural instabilities for ‘smart’ purposes in a variety of venues. Among the different types of unstable responses, buckling is a phenomenon that has been known for centuries, and yet it is generally avoided through special design modifications. Increasing interest in the design of smart devices and mechanical systems has identified buckling and postbuckling response as a favorable behavior. The objective of this topical review is to showcase the recent advances in buckling-induced smart applications and to explain why buckling responses have certain advantages and are especially suitable for these particular applications. Interesting prototypes in terms of structural forms and material uses associated with these applications are summarized. Finally, this review identifies potential research avenues and emerging trends for using buckling and other elastic instabilities for future innovations.
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TL;DR: A snapping mechanical metamaterial is designed, which exhibits a sequential snap-through behavior under tension, and can be altered by tuning the architecture of the snapping segments to achieve a range of nonlinear mechanical responses, including monotonic, S-shaped, plateau, and non-monotonic snap-Through behavior.
Abstract: A snapping mechanical metamaterial is designed, which exhibits a sequential snap-through behavior under tension. The tensile response of this mechanical metamaterial can be altered by tuning the architecture of the snapping segments to achieve a range of nonlinear mechanical responses, including monotonic, S-shaped, plateau, and non-monotonic snap-through behavior.
312 citations
TL;DR: Whitesides et al. as mentioned in this paper proposed the Whitesides Wyss Institute for Biologically Inspired Engineering at Harvard University, which is an extension of the Wyss Institutes of Biomedical Engineering.
Abstract: Dr. D. Yang, Dr. M. S. Verma, Dr. J.-H. So, Prof. B. Mosadegh, Prof. C. Keplinger, B. Lee, F. Khashai, E. Lossner, Prof. G. M. Whitesides Department of Chemistry and Chemical Biology Harvard University 12 Oxford Street , Cambridge , MA 02138 , USA E-mail: gwhitesides@gmwgroup.harvard.edu Dr. D. Yang, Prof. Z. Suo School of Engineering and Applied Sciences Harvard University 29 Oxford Street , Cambridge , MA 02138 , USA Prof. B. Mosadegh, Prof. G. M. Whitesides Wyss Institute for Biologically Inspired Engineering Harvard University 60 Oxford Street , Cambridge , MA 02138 , USA Prof. Z. Suo, Prof. G. M. Whitesides Kavli Institute for Bionano Science & Technology Harvard University 29 Oxford Street , Cambridge , MA 02138 , USA
227 citations
TL;DR: Shape memory polymers (SMPs) are a class of active, deformable materials that can switch between a temporary shape, which can be freely designed, and their original shape.
202 citations
Cites background from "Buckling-induced smart applications..."
...However, bending analysis in geometry and mechanics, specifically postbending theory, has been a widespread focus in recent decades and has become the common focus of subjects including applied math, biology, material science, mechanics, physics and engineering [216]....
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TL;DR: A survey of the state-of-the-art design advances in this research area over the past 20 years is presented and can be helpful to those engaged in the topology optimization of compliant mechanisms who desire to be apprised of the field’s recent state and research tendency.
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TL;DR: It became apparent that the adoption of morphing concepts for routine use on aerial vehicles is still scarce, and some reasons holding back their integration for industrial use are given.
186 citations
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17 Sep 2011
TL;DR: In this article, the authors proposed a topology optimization by distribution of isotropic material for truss structures with anisotropic materials, based on the topology design of truss structure.
Abstract: 1 Topology optimization by distribution of isotropic material- 2 Extensions and applications- 3 Design with anisotropic materials- 4 Topology design of truss structures- 5 Appendices- 6 Bibliographical notes- References- Author Index
4,881 citations
TL;DR: Shape memory alloys (SMAs) are a class of shape memory materials (SMMs) which have the ability to "memorise" or retain their previous form when subjected to certain stimulus such as thermomechanical or magnetic variations.
2,818 citations
TL;DR: The field of power harvesting has experienced significant growth over the past few years due to the ever-increasing desire to produce portable and wireless electronics with extended lifespans as mentioned in this paper, and the use of batteries can be troublesome due to their limited lifespan, thus necessitating their periodic replacement.
Abstract: The field of power harvesting has experienced significant growth over the past few years due to the ever-increasing desire to produce portable and wireless electronics with extended lifespans. Current portable and wireless devices must be designed to include electrochemical batteries as the power source. The use of batteries can be troublesome due to their limited lifespan, thus necessitating their periodic replacement. In the case of wireless sensors that are to be placed in remote locations, the sensor must be easily accessible or of a disposable nature to allow the device to function over extended periods of time. Energy scavenging devices are designed to capture the ambient energy surrounding the electronics and convert it into usable electrical energy. The concept of power harvesting works towards developing self-powered devices that do not require replaceable power supplies. A number of sources of harvestable ambient energy exist, including waste heat, vibration, electromagnetic waves, wind, flowing water, and solar energy. While each of these sources of energy can be effectively used to power remote sensors, the structural and biological communities have placed an emphasis on scavenging vibrational energy with piezoelectric materials. This article will review recent literature in the field of power harvesting and present the current state of power harvesting in its drive to create completely self-powered devices.
2,438 citations
TL;DR: This paper is intended to serve as a summary review of the collective experience the structural engineering community has gained from the use of wireless sensors and sensor networks for monitoring structural performance and health.
Abstract: In recent years, there has been an increasing interest in the adoption of emerging sensing technologies for instrumentation within a variety of structural systems. Wireless sensors and sensor networks are emerging as sensing paradigms that the structural engineering field has begun to consider as substitutes for traditional tethered monitoring systems. A benefit of wireless structural monitoring systems is that they are inexpensive to install because extensive wiring is no longer required between sensors and the data acquisition system. Researchers are discovering that wireless sensors are an exciting technology that should not be viewed as simply a substitute for traditional tethered monitoring systems. Rather, wireless sensors can play greater roles in the processing of structural response data; this feature can be utilized to screen data for signs of structural damage. Also, wireless sensors have limitations that require novel system architectures and modes of operation. This paper is intended to serve as a summary review of the collective experience the structural engineering community has gained from the use of wireless sensors and sensor networks for monitoring structural performance and health.
1,497 citations