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Related Concept Videos

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.
As the bending moment...
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Bending of Members Made of Several Materials01:11

Bending of Members Made of Several Materials

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In analyzing a structural member composed of two different materials with identical cross-sectional areas, it is crucial to understand how their distinct elastic properties affect the member's response under load. The analysis involves assessing stress and strain distributions using the transformed section concept, which accounts for variations in material properties.
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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

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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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Yield Criteria for Ductile Materials under Plane Stress01:25

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In designing structural elements and machine parts using ductile materials, it is crucial to ensure that these components withstand applied stresses without yielding. Yielding is initially determined through a tensile test, which evaluates the material's response to uniaxial stress. However, tensile stress is insufficient when components face biaxial or plane stress conditions This condition requires advanced criteria to predict failure.
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Polymers are classified as linear or branched on the basis of their chain architecture. The polymer chains in linear polymers have a long chain-like structure with minimal to no branching at all. Even if a polymer features large substituent groups on the monomer, which appear as branches to the skeleton, it is not considered a branched polymer. A branched polymer contains secondary polymer chains that arise from the main polymer chain. The branching occurs when the polymer growth shifts from...
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Updated: Nov 10, 2025

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Mechanical Properties and Reliability of Parametrically Designed Architected Materials Using Urethane Elastomers.

Jun Morita1, Yoshihiko Ando1, Satoshi Komatsu1

  • 1JSR Corporation, Yokkaichi, Mie 510-8552, Japan.

Polymers
|April 3, 2021
PubMed
Summary

3D printed architected materials using UV-cured urethane elastomers offer customizable properties for insoles. These advanced materials demonstrate superior durability and UV resistance compared to traditional foams, ensuring long-term reliability.

Keywords:
3D printingAsker hardnessadditive manufacturingarchitected materialelastomerfoaminsolelatticemetamaterialreliability

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Area of Science:

  • Materials Science
  • Additive Manufacturing
  • Biomedical Engineering

Background:

  • Achieving multiple physical properties from a single material via 3D printing is crucial for advanced manufacturing.
  • Industrial-level durability and reliability are essential for individualized device manufacturing.

Purpose of the Study:

  • To investigate the properties of architected materials made from UV-cured urethane elastomers for insole applications.
  • To compare the durability and reliability of these architected materials against conventional foamed materials used in medical insoles.

Main Methods:

  • Fabrication of microlattice and metafoam architected materials using UV-cured urethane elastomers.
  • Evaluation of material properties including hardness, rebound resilience, fatigue testing, and UV resistance.
  • Comparison with existing foamed materials like polyethylene and ethylene vinyl acetate.

Main Results:

  • Continuous adjustment of hardness was achieved by controlling design parameters.
  • Combining materials effectively controlled rebound resilience.
  • Architected materials exhibited superior fatigue and UV resistance compared to conventional plastic foams (polyethylene, ethylene vinyl acetate).

Conclusions:

  • 3D printed architected urethane elastomers offer tunable properties for customized insoles.
  • These materials demonstrate enhanced durability and UV resistance, making them suitable for long-term use.
  • The findings support the potential of these advanced materials for reliable, individualized medical device manufacturing.