scholarly journals Nonlinear elastic behavior of bitumen emulsion-stabilized materials with C&D waste aggregates

2015 ◽  
Vol 98 ◽  
pp. 853-863 ◽  
Author(s):  
B. Gómez-Meijide ◽  
I. Pérez
Keyword(s):  
Elastic Behavior ◽  
Bitumen Emulsion ◽  
Nonlinear Elastic

scholarly journals A set of measures for the systematic classification of the nonlinear elastic behavior of disparate rocks

2015 ◽  
Vol 120 (3) ◽  
pp. 1587-1604 ◽  
Author(s):  
Jacques Rivière ◽  
Parisa Shokouhi ◽  
Robert A. Guyer ◽  
Paul A. Johnson
Keyword(s):  
Elastic Behavior ◽  
Systematic Classification ◽  
Nonlinear Elastic

Digital image correlation to analyze nonlinear elastic behavior of materials

2017 ◽  
Author(s):  
Nirusha Phillips ◽  
Ghulam Mubashar Hassan ◽  
Arcady Dyskin ◽  
Cara MacNish ◽  
Elena Pasternak
Keyword(s):  
Digital Image Correlation ◽  
Digital Image ◽  
Image Correlation ◽  
Elastic Behavior ◽  
Nonlinear Elastic

scholarly journals Random Fiber Networks With Superior Properties Through Network Topology Control

2019 ◽  
Vol 86 (8) ◽  
Author(s):  
S. Deogekar ◽  
Z. Yan ◽  
R. C. Picu
Keyword(s):  
Network Architecture ◽  
Elastic Behavior ◽  
Fiber Networks ◽  
Linear Elastic ◽  
New Class ◽  
Link Density ◽  
Cross Link Density ◽  
Random Fiber Networks ◽  
Nonlinear Elastic ◽  
Poisson Contraction

In this work, we study the effect of network architecture on the nonlinear elastic behavior and strength of athermal random fiber networks of cellular type. We introduce a topology modification of Poisson–Voronoi (PV) networks with convex cells, leading to networks with stochastic nonconvex cells. Geometric measures are developed to characterize this new class of nonconvex Voronoi (NCV) networks. These are softer than the reference PV networks at the same nominal network parameters such as density, cross-link density, fiber diameter, and connectivity number. Their response is linear elastic over a broad range of strains, unlike PV networks that exhibit a gradual increase of the tangent stiffness starting from small strains. NCV networks exhibit much smaller Poisson contraction than any network of same nominal parameters. Interestingly, the strength of NCV networks increases continuously with an increasing degree of nonconvexity of the cells. These exceptional properties render this class of networks of interest in a variety of applications, such as tissue scaffolds, nonwovens, and protective clothing.

A Pump-Probe Analysis of Nonlinear Elastic Behavior on the San Andreas Fault

2020 ◽  
Author(s):  
Andrew Delorey
Keyword(s):  
San Andreas Fault ◽  
Earth Tides ◽  
Elastic Behavior ◽  
Fracture Networks ◽  
Pump Probe ◽  
San Andreas ◽  
The Earth ◽  
Probe Analysis ◽  
Highly Nonlinear ◽  
Nonlinear Elastic

<p>Fracture networks in the subsurface influence nearly every aspect of earthquakes and natural hazards.  These aspects, including stress, permeability and material failure, and are important for hazard assessment. However, our ability to monitor fracture behavior in the Earth is insufficient for any type of decision-making regarding hazard avoidance.  I propose a new method for probing the evolution of fracture networks in situ to inform public safety decisions and understand natural systems. </p><p>In heterogeneous, fractured materials, like those found in the Earth, the relationship between stress and strain is highly nonlinear.  This nonlinearity in the upper crust is almost entirely due to fractures.  By measuring to what extent Earth materials exhibit nonlinear elastic behavior, we can learn more information about them.  Directly, measuring physical properties may be more useful than just detecting that fractures are present or how they are shaped and oriented.  We measure nonlinearity by measuring the apparent modulus at different strains. </p><p>In this study we use a pump-probe analysis, which involves continuously probing velocity (as a proxy for modulus) while systematically straining the material.  We will use solid Earth tides as a strain pump and empirical Green’s functions (EGF) as a velocity probe.  We apply this analysis to the San Andreas Fault near Parkfield, California.  We chose Parkfield because there is a long-term deployment of borehole seismic instruments that recorded before and after a M6 earthquake.  We find evidence that nonlinear behavior is correlated with the seismic cycle and therefore it may contain information on the both the evolution and current state of stress on faults. </p>

A Robot Gripper in Polymeric Material for Solid Micro-Meso Parts

2017 ◽  
Vol 11 (2) ◽  
pp. 311-321 ◽  
Author(s):  
Francesco Aggogeri ◽  
◽  
Andrea Avanzini ◽  
Alberto Borboni ◽  
Stefano Pandini
Keyword(s):  
Polymeric Material ◽  
Low Cost ◽  
Material Model ◽  
Elastic Behavior ◽  
Mechanical Transmission ◽  
Element Analysis ◽  
Robot Gripper ◽  
Simple Geometry ◽  
Deformable Materials ◽  
Nonlinear Elastic

This paper proposes a robot gripper in polymeric material for solid micro-meso parts. The gripper is developed using a light-weight, highly deformable and low cost material, that allows elastic deformations. The proposed solution consists of a simple geometry, incorporating the complexity of the mechanical transmission in the non-linear high deformations of the flexible elements of the device. This choice permits to grip multi-sizes objects. The design approach focuses on Ludwick material model, that describes deformable materials with a nonlinear elastic behavior. The kinematics of the gripper is presented and the results are verified with the finite element analysis. Finally, the gripper was fabricated and validated through a set of experimetal tests. The obtained resulsts confirmed the theoretical and simultion models. The maximum opening and force of the gripping jaws are 1,500 μm and 155 mN, repsectively. Nevetheless further performances may be obtained using different geometrical choices developed in the kinematic analysis.

A New Model for the Cross Anisotropic Nonlinear Elastic Behavior of Unbounded Soils for Road Pavements

2014 ◽  
Vol 45 (4) ◽  
pp. 412-430 ◽  
Author(s):  
Adolfo Foriero ◽  
Joseph Tsafack ◽  
Felix Doucet
Keyword(s):  
Elastic Behavior ◽  
New Model ◽  
The Cross ◽  
Nonlinear Elastic

Publisher's Note: Nonlinear elastic behavior of two-dimensional molybdenum disulfide [Phys. Rev. B87, 035423 (2013)]

2013 ◽  
Vol 87 (7) ◽  
Author(s):  
Ryan C. Cooper ◽  
Changgu Lee ◽  
Chris A. Marianetti ◽  
Xiaoding Wei ◽  
James Hone ◽  
...  
Keyword(s):  
Molybdenum Disulfide ◽  
Elastic Behavior ◽  
Two Dimensional ◽  
Nonlinear Elastic

A New Constitutive Model for the Compressibility of Elastomers at Finite Deformations

2001 ◽  
Vol 74 (4) ◽  
pp. 541-559 ◽  
Author(s):  
Jeffrey E. Bischoff ◽  
Ellen M. Arruda ◽  
Karl Grosh
Keyword(s):  
Uniaxial Tension ◽  
Volume Change ◽  
Constitutive Models ◽  
Hydrostatic Compression ◽  
Constitutive Law ◽  
Elastic Behavior ◽  
Compression Tests ◽  
Volume Response ◽  
Using Data ◽  
Nonlinear Elastic

Abstract Although traditional constitutive models for rubbery elastic materials are incompressible, many materials that demonstrate nonlinear elastic behavior are somewhat compressible. Clearly important in hydrostatic deformations, compressibility can also significantly affect the response of elastomers in applications for which several boundaries are rigidly fixed, such as bushings, or triaxial states of stress are realized. Compressibility is also important for convergence of finite element simulations in which a rubbery elastic constitutive law is in use. Volume changes that reflect compressibility have been observed historically in both uniaxial tension and hydrostatic compression tests; however, there appear to be no data obtained from both types of tests on the same material by which to validate a compressible hyperelastic law. In this paper, we propose a new compressible hyperelastic constitutive law for elastomers and other rubbery materials in which entropy and internal energy changes contribute to the volume change. Using data from the literature, we show that this law is capable of reproducing both the pressure—volume response of elastomers in hydrostatic compression, as well as the stress—stretch and volume change—stretch data of elastomers in uniaxial tension.

scholarly journals The nonlinear elastic behavior of crystalline solids: An atomistic simulation study

2008 ◽  
Vol 57 (3) ◽  
pp. 1834
Author(s):  
Wen Yu-Hua ◽  
Zhang Yang ◽  
Zhu Zi-Zhong
Keyword(s):  
Simulation Study ◽  
Atomistic Simulation ◽  
Elastic Behavior ◽  
Crystalline Solids ◽  
Nonlinear Elastic
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