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Related Concept Videos

Plastic Behavior01:21

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A material's elastic behavior is characterized by the disappearance of stress once the load is removed, allowing the material to return to its original state. However, when stress surpasses the yield point, yielding commences, marking the onset of plastic deformation or permanent set. This change from elastic to plastic behavior is influenced by the peak stress value and the duration before the load is removed. An intriguing observation occurs when a specimen is loaded, unloaded, and...
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Plasticity is the property where an object loses its elasticity and undergoes irreversible deformation, even after the deformation forces are eliminated. If a material deforms irreversibly without increasing stress or load, then this is called ideal plasticity. For example, when a force is applied to an aluminum rod, it changes its shape, but it does not return to its original shape once the force is removed. Plastic deformation or ductility is thus a permanent deformation or change in the...
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Water-reducers, or plasticizers, are chemical admixtures used in concrete to improve strength and workability. These additives reduce the water-cement ratio without compromising workability, lower the cement content while maintaining the same workability, or increase workability to assist concrete placement in inaccessible areas.
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It is essential to understand how structural members behave under plastic deformation when the bending stress exceeds the material's yield strength. This state of deformation permanently alters the shape of the member, in contrast to the linear elastic behavior observed before yielding. The strain at any point in the member is expressed in terms of maximum strain. Notably, the neutral axis, which coincides with the centroid during elastic bending, shifts away from the centroid under plastic...
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Plastic deformation represents a fundamental concept in materials science, which explains the irreversible change in the shape of a material when it experiences stress beyond its elastic capability. This phenomenon is important in structural engineering, especially in designing and analyzing cantilever beams—structures that are securely fixed at one end and bear loads at the opposite end. When these beams are subjected to loads within their elastic range, they will return to their...
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When materials are subjected to forces that surpass their yield strength, they undergo a process known as plastic deformation. This results in a permanent alteration or strain in their structure. This concept can be specifically applied to circular shafts, where the deformation leads to a change in its shape. The precise evaluation of this plastic deformation requires understanding the stress distribution within the circular shaft, which is achieved by calculating the maximum shearing stress in...
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Updated: Feb 14, 2026

Extraction of Organochlorine Pesticides from Plastic Pellets and Plastic Type Analysis
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Temperature-Dependent Plastic Behavior of ASA: Johnson-Cook Plasticity Model Calibration and FEM Validation.

Peter Palička1, Róbert Huňady1,2, Martin Hagara1

  • 1Department of Applied Mechanics and Mechanical Engineering, Faculty of Mechanical Engineering, Technical University of Košice, 042 00 Košice, Slovakia.

Materials (Basel, Switzerland)
|February 13, 2026
PubMed
Summary

This study calibrates the temperature-dependent Johnson-Cook (J-C) plasticity model for Acrylonitrile Styrene Acrylate (ASA) below its glass transition temperature. The calibrated model accurately predicts ASA

Keywords:
ASAFEAJohnson–Cook hardening modelmaterial modelnumerical modelplasticityuniaxial tensile test

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Area of Science:

  • Materials Science
  • Mechanical Engineering
  • Polymer Science

Background:

  • Acrylonitrile Styrene Acrylate (ASA) is crucial for outdoor applications due to its durability.
  • Accurate characterization of ASA's temperature-dependent plastic behavior is needed for reliable simulations.
  • Existing models lack sufficient data for ASA under varying thermal conditions.

Purpose of the Study:

  • To calibrate the temperature-dependent Johnson-Cook (J-C) plasticity model for ASA.
  • To investigate ASA's plastic response across a practical temperature range (-10°C to +65°C).
  • To provide reliable material parameters for simulation-driven design of ASA components.

Main Methods:

  • Performed uniaxial tensile tests on ASA at -10°C, +23°C, and +65°C with a strain rate of 0.01 s-1.
  • Identified J-C model parameters (A, B, n) using least-squares optimization in MATLAB R2024b.
  • Validated the calibrated J-C model in Abaqus 2024 via finite element simulations.

Main Results:

  • The J-C model parameters were successfully calibrated, showing good agreement with experimental stress-strain curves.
  • Finite element simulations using the calibrated J-C model closely matched experimental data across all tested temperatures.
  • The J-C model effectively captures the strain hardening behavior of ASA.

Conclusions:

  • The study presents a validated, temperature-dependent J-C plasticity model for ASA.
  • The developed methodology and parameter set enable accurate numerical simulations of ASA.
  • This work supports improved design, forming analysis, and structural assessment of ASA under thermal variations.