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Related Concept Videos

Relation between Poisson's ratio, Modulus of Elasticity and Modulus of Rigidity01:15

Relation between Poisson's ratio, Modulus of Elasticity and Modulus of Rigidity

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Deformation occurs in axial and transverse directions when an axial load is applied to a slender bar. This deformation impacts the cubic element within the bar, transforming it into either a rectangular parallelepiped or a rhombus, contingent on its orientation. This transformation process induces shearing strain. Axial loading elicits both shearing and normal strains. Applying an axial load instigates equal normal and shearing stresses on elements oriented at a 45° angle to the load axis.
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Strain and Elastic Modulus01:15

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The quantity that describes the deformation of a body under stress is known as strain. Strain is given as a fractional change in either length, volume, or geometry under tensile, volume (also known as bulk), or shear stress, respectively, and is a dimensionless quantity. The strain experienced by a body under tensile or compressive stress is called tensile or compressive strain, respectively. In contrast, the strain experienced under bulk stress and shear stress is known as volume and shear...
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The dynamic modulus of elasticity assesses how a concrete structure deforms under impact or dynamic loads. It is typically higher than the static modulus of elasticity, measured under slow, steady loading conditions.
The sonic test is a common method to determine the dynamic modulus. In this test, a concrete beam, sized either 6 x 6 x 30 inches or 4 x 4 x 20 inches, is clamped at its center. Vibrations are initiated at one end of the beam by an electromagnetic exciter unit powered by...
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Members Made of Elastoplastic Material01:19

Members Made of Elastoplastic Material

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The behavior of elastoplastic materials under bending stresses, particularly in structural members with rectangular cross-sections, is crucial for predicting material responses and understanding failure modes. Initially, when a bending moment is applied, the stress distribution across the section follows Hooke's Law and is linear and elastic. This distribution means the stress increases from the neutral axis to the maximum at the outer fibers, up to the elastic limit.
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Elasticity in Concrete01:20

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Upon subjecting concrete to moderate or high uniaxial compressive or tensile stresses, the strain response is non-linear relative to the stress applied. As the stress is removed, the resulting stress-strain curve deviates from the original path traced during loading, creating a hysteresis loop, indicative of the concrete's non-linear and non-elastic properties. Typically, a material's modulus of elasticity, which is a measure of the material's stiffness, is inferred from the linear...
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Hooke's Law01:26

Hooke's Law

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Hooke's law, a pivotal principle in material science, establishes that the strain a material undergoes is directly proportional to the applied stress, defined by a factor called the modulus of elasticity or Young's modulus.
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Related Experiment Video

Updated: May 23, 2025

Characterizing Dissipative Elastic Metamaterials Produced by Additive Manufacturing
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Characterizing Dissipative Elastic Metamaterials Produced by Additive Manufacturing

Published on: June 28, 2024

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3D Printed Materials with Nanovoxelated Elastic Moduli.

Peter L H Newman1,2, Mohammad Mirkhalaf3, Steven C Gauci4

  • 1The School of Biomedical Engineering, The University of Sydney, Sydney, Australia.

Advanced Materials (Deerfield Beach, Fla.)
|March 7, 2025
PubMed
Summary

Researchers developed a new method to fabricate 3D materials with precisely controlled nanoscale mechanical properties. This breakthrough enables the creation of advanced materials with superior strength-to-weight ratios for novel applications.

Keywords:
3d printingarchitectured materialselastic modulusmetamaterialsnanoscale materials

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Area of Science:

  • Materials Science
  • Nanotechnology
  • Mechanical Engineering

Background:

  • Advanced fabrication techniques are crucial for synthesizing complex materials at the nanoscale.
  • Controlling mechanical properties of 3D materials at the nanoscale remains a significant challenge.
  • Precise nanoscale mechanical control can unlock theoretical material strengths and mimic natural structures.

Purpose of the Study:

  • To present a novel method for fabricating materials with nanovoxelated elastic moduli.
  • To demonstrate precise programming of material mechanics at the nanoscale.
  • To achieve significant improvements in mechanical property transitions within materials.

Main Methods:

  • Utilized a volume-conserving photoresist composed of a copolymer hydrogel.
  • Employed OpenScribe, an open-source software for programming material mechanics.
  • Fabricated materials with periodic unit cells featuring heteromechanically tessellated soft-stiff structures.

Main Results:

  • Achieved a mechanical transition over an order-of-magnitude change in elastic modulus within 770 nm.
  • Demonstrated a 130-fold improvement compared to previous reports in mechanical property control.
  • Successfully created complex 3D materials with tailored nanoscale mechanical properties.

Conclusions:

  • This work critically advances material design through unparalleled control over nanoscale mechanics.
  • Opens new avenues for fabricating materials with specifically tailored properties and functionalities.
  • Enables the development of materials with enhanced strength-to-weight ratios.