The macroscopic behavior of pantographic sheets depends mainly on their microstructure: experimental evidence and qualitative analysis of damage in metallic specimens
Article dans une revue avec comité de lecture
Auteur
DE ANGELO, MicheleSPAGNUOLO, MarioD’ANNIBALE, FrancescoPFAFF, AronHOSCHKE, KlausMISRA, AviralDUPUY, CorinnePEYRE, PatriceDIRRENBERGER, JustinPAWLIKOWSKI, MarekRésumé
Recently the exotic properties of pantographic metamaterials have been investigated, and various mathematical models (both discrete and continuous) have been introduced. However, the experimental evidence available up to now concerns only polyamide specimens. In this paper, we use specimens printed using metallic powder. We prove experimentally that the main qualitative and quantitative features of pantographic sheets in planar deformation are independent of the constituting materials, at least when they can be regarded as homogeneous and isotropic at micro-level. Of course, the absolute value of Young’s modulus of constituent material affects the overall reaction force needed to the hard device to impose a given displacement: A first investigation on this effect is also attempted.
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Advances in pantographic structures: design, manufacturing, models, experiments and image analyses Article dans une revue avec comité de lecture(Springer Verlag, 2019)In the last decade, the exotic properties of pantographic metamaterials have been investigated and different mathematical models (both discrete or continuous) have been introduced. In a previous publication, a large part ...
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Article dans une revue avec comité de lecture(Institute of Problems of Mechanical Engineering, 2019)The purpose of this article is to show the basic characteristics of the so-called pantographic metamaterial. Here we underline how the microstructure provides some exotic properties and, in principle, implies the second ...
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Article dans une revue avec comité de lecture(Elsevier, 2019)This article discusses the results of the first attempts to print metal pantographic structures with perfect pivots, i.e. with rotational hinges connecting the two families of fibers composing the network without any ...
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Article dans une revue avec comité de lecture; ; ; ; ; ;
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The systematic occurrence of porosities inside selective laser melted (SLM) parts is a well-known phenomenon. In order to improve the density of SLM parts, it is important not only to assess the physical origin of the ... -
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