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Related Concept Videos

Bending of Members Made of Several Materials01:08

Bending of Members Made of Several Materials

248
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.
Hooke's Law determines stress in each material, stating that stress is proportional to strain but varies due to each...
248
Behavior of Concrete Under Compressive Load01:23

Behavior of Concrete Under Compressive Load

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Concrete exhibits specific behaviors under different compressive loads. Understanding this is crucial for understanding its structural integrity. When concrete undergoes uniaxial compression, it tends to develop cracks that run parallel to the direction of the force. These parallel cracks stem from localized tensile stresses that occur perpendicular to the compression direction. Additionally, angled cracks may appear due to the formation of shear planes.
As the concrete specimen fractures under...
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Stresses under Combined Loadings01:23

Stresses under Combined Loadings

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When analyzing a bent tube with a circular cross-section subjected to multiple forces, it is crucial to determine the stress distribution in order to maintain structural integrity under varied load conditions.
The process begins by slicing the tube at critical points and analyzing the internal forces and stress components at these sections, focusing on the centroid. Normal stresses, generated by axial forces and bending moments, are either compressive or tensile and vary across the section from...
220
Members Made of Elastoplastic Material01:19

Members Made of Elastoplastic Material

132
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...
132
Principal Stresses: Problem Solving01:15

Principal Stresses: Problem Solving

284
When analyzing two planes intersecting at right angles under the influence of shearing, tensile, and compressive stresses, it is essential to identify principal planes, maximum shearing stress, and principal stresses. To find the principal planes, apply a formula that equates them to twice the shearing stress divided by the difference between tensile and compressive stresses.
284
Shear and Bending Moment Diagram: Problem Solving01:24

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When analyzing a beam supporting concentrated loads and a distributed load, drawing the shear and bending moment diagrams is essential. These diagrams help understand the internal forces and moments acting on the beam, which is crucial for designing safe and efficient structures. Follow these steps to create the shear and bending moment diagrams:
Draw a Free-Body Diagram: Start by drawing a free-body diagram of the entire beam, including the concentrated loads, distributed load, and reaction...
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A Coupled Experiment-finite Element Modeling Methodology for Assessing High Strain Rate Mechanical Response of Soft Biomaterials
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Computer Simulation of Composite Materials Behavior under Pressing.

Khrystyna Berladir1, Dmytro Zhyhylii2, Jiří Brejcha3

  • 1Department of Applied Materials Science and Technology of Constructional Materials, Sumy State University, 2, Rymskogo-Korsakova St., 40007 Sumy, Ukraine.

Polymers
|December 11, 2022
PubMed
Summary
This summary is machine-generated.

Computer simulations reveal how composite material behavior during pressing and sintering is influenced by filler shape. This research aids in optimizing composite manufacturing for enhanced properties.

Keywords:
ANSYS WorkbenchPoisson’s ratiobearing capacitypolymer matrixpressingprocess innovationsimulationsinteringstrain capabilitystress-train curvesultimate stress

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Area of Science:

  • Materials Science
  • Computational Mechanics
  • Polymer Engineering

Background:

  • Composite materials offer diverse functional properties achieved through advanced manufacturing techniques.
  • Composition formation technology is crucial for tailoring composite structure and performance.
  • Understanding material behavior during processing is key to optimizing final properties.

Purpose of the Study:

  • To simulate and analyze the behavior of polymer composites during pressing and sintering.
  • To identify key dependencies between processing parameters and composite material responses.
  • To evaluate the impact of filler morphology on material behavior during manufacturing.

Main Methods:

  • Finite element modeling (FEM) using ANSYS Workbench.
  • Micromechanical approach to analyze composite structures with spherical and cylindrical fillers.
  • Simulation of material response under tensile loading to obtain stress-strain curves and Poisson's ratios.
  • Modeling of mechanical pressing to assess residual strain accumulation.

Main Results:

  • Obtained true stress-strain curves, Poisson's ratios, and ultimate stresses for composites based on matrix and filler properties.
  • Predicted residual strain accumulation during the pressing stage before sintering.
  • Demonstrated the enhancement of total strain capability in composite materials post-sintering.

Conclusions:

  • Computer simulations provide critical insights into composite material behavior during manufacturing processes.
  • Filler type significantly influences the mechanical response and strain accumulation in composites.
  • The study highlights the importance of processing simulation for predicting and improving composite material performance.