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On the measurement of Poisson's ratio for modeling clay
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In this paper, a simple but effective test configuration for measuring Poisson's ratio is described and test results are displayed, which is necessary to take special precautions to eliminate large straining between small-strain tests of different tensorial character.Abstract:
Resonance testing of Plasticine clay indicates that, for small strains (≤10−5) in the frequency range 100–3000 Hz, the material can be considered to be a linear viscoelastic solid with parameters which depend on temperature, frequency and prior large-strain history. In order to measure Poisson's ratio, it is necessary to take special precautions to eliminate large straining between small-strain tests of different tensorial character. A simple but effective test configuration for measuring Poisson's ratio is described and test results are displayed.read more
Citations
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Measurement of eggshell strength
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TL;DR: In this paper, a review of methods used to measure the eggshell strength and associated parameters is presented, including specific gravity of the egg and shell deformation under a non-destructive force.
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Material Model for Modeling Clay at High Strain Rates
TL;DR: In this paper, a high-speed camera is used to record the penetration of a gas-gun launched cylindrical mass with a hemispherical cap into a block of clay.
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Dynamic characterization of Roma Plastilina No. 1 from Drop Test and inverse analysis
TL;DR: In this paper, the authors presented a characterization method for soft malleable materials to determine the material parameters associated with a given constitutive model, formulated as an inverse problem of Drop Test and solved as an optimization procedure.
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Two new penetration models for ballistic clay incorporating strain-hardening, strain-rate and temperature effects
TL;DR: In this article, two analytical solutions for dynamic spherical cavity expansion in an infinite elastic-plastic solid are first derived by including the strain-hardening effect, strain-rate dependence and temperature influence.
Journal ArticleDOI
Dynamische Wechselwirkung eines Fundamentes mit dem viskoelastischen Halbraum
TL;DR: In this paper, wechselwirkung von Fundament and Baugrund is behandelt in der Kontinuumstheorie basierendes Verfahren zur Berechnung von Vertikal and Kippschwingungen.
References
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Book
Theory of elasticity
TL;DR: The theory of the slipline field is used in this article to solve the problem of stable and non-stressed problems in plane strains in a plane-strain scenario.
Journal ArticleDOI
Analysis of moiré fringe multiplication phenomena.
TL;DR: The theory of moiré fringes is extended to this case of grossly dissimilar grating frequencies and the combination of a symmetrical double-order blazed reference grating with a coarse bar-and-space active grating appears most attractive for many metrological applications.
Journal ArticleDOI
Moire Fringe Multiplication with a Nonsymmetrical Doubly Blazed Reference Grating
TL;DR: A fine reference grating and coarse specimen grating in series are illuminated so that two dominant diffraction sequences take symmetrical paths in the intergrating space in this optimum configuration, observation is on or near the axis of symmetry.
Journal ArticleDOI
New optical methods of moiré fringe multiplication
TL;DR: In this paper, three methods are described and multiplication by factors as high as 30 are demonstrated. But they apply to both bar-and-space screens and transparent diffraction gratings.
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