Topic
Smart material
About: Smart material is a research topic. Over the lifetime, 3704 publications have been published within this topic receiving 74280 citations. The topic is also known as: intelligent material & responsive material.
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TL;DR: In this article, the experimental results of uniaxial tensile tests of a sleeve filled with different granular materials are presented, and the results support the modeling of the mechanics of such a system with the Chaboche viscoplastic constitutive law.
Abstract: This work deals with novel “smart systems” that are based on granular materials. These systems consist of mechanical components, such as a beam or bar, enclosed in a tight flexible sleeve that is filled with a granular material. When air is pumped out of the sleeve, the resulting underpressure causes the compression of the granules making the system more rigid and changing its damping characteristics. This allows for quick, easy, and inexpensive control of the damping and stiffness of such a system. This paper presents the experimental results of uniaxial tensile tests of a sleeve filled with different granular materials. These results support the modeling of the mechanics of such a system with the Chaboche viscoplastic constitutive law. The experiments provide the quantitative and functional dependence of the model parameters on the underpressure, which acts as the control variable. The highly non-linear dependence of the system's fundamental mechanical properties on the underpressure is described and discussed. This basic work opens the way to applications in mechanical systems where effective control of vibrations or noise is important.
40 citations
TL;DR: This paper discusses several novel coupling mechanisms provided by these hybrid material systems and demonstrates how the formation and properties of a lipid bilayer can respond to a variety of stimuli including mechanical forces and electric fields.
Abstract: Membrane-based biomolecular materials are a new class of smart material that feature networks of artificial lipid bilayers contained within durable synthetic substrates. Bilayers contained within this modular material platform provide an environment that can be tailored to host an enormous diversity of functional biomolecules, where the functionality of the global material system depends on the type(s) and organization(s) of the biomolecules that are chosen. In this paper, we review a series of biomolecular material platforms developed recently within the Leo Group at Virginia Tech and we discuss several novel coupling mechanisms provided by these hybrid material systems. The platforms developed demonstrate that the functions of biomolecules and the properties of synthetic materials can be combined to operate in concert, and the examples provided demonstrate how the formation and properties of a lipid bilayer can respond to a variety of stimuli including mechanical forces and electric fields.
40 citations
01 Sep 2021
40 citations
TL;DR: In this paper, the authors consider the problem of shape control by nullifying structural deformations caused by certain external disturbances, mainly body forces and surface traction, in smart composites containing conventional ferroelectric polycrystals, natural crystals or special polymers.
40 citations
TL;DR: The MNP/PU composite material is a potential candidate to be used as a smart material under the influences of electric and/or magnetic fields over other existing dielectric materials.
40 citations