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Plasticity

Plasticity

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...

Neuroplasticity

Neuroplasticity

Neuroplasticity reflects the brain's remarkable capacity to adapt and evolve, responding dynamically to learning, experiences, or injury by reorganizing its neural circuitry. This reorganization involves creating new neural connections and refining old ones through a series of biological processes that contribute to the brain's lifelong development and adaptability.

Plastic Behavior

Plastic Behavior

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 reloaded.

Plastic Deformations of Members with a Single Plane of Symmetry

Plastic Deformations of Members with a Single Plane of Symmetry

When a structural member undergoes plastic deformation due to bending, it is crucial to understand the position of the neutral axis and the stress distribution. This member, characterized by a single plane of symmetry, exhibits a uniform stress distribution, with negative stress above the neutral axis and positive stress below. Notably, the neutral axis does not align with the centroid of the cross-section. This misalignment is typical in cases where the cross-section is not rectangular or...

Plastic Deformations

Plastic Deformations

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 original...

Plastic Deformations

Plastic Deformations

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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Related Experiment Video

Updated: Jun 21, 2026

Slice Patch Clamp Technique for Analyzing Learning-Induced Plasticity

Slice Patch Clamp Technique for Analyzing Learning-Induced Plasticity

Published on: November 11, 2017

Hierarchical plasticity from pair distance fluctuations.

S A Menor¹, Adam M R de Graff, M F Thorpe

¹Department of Physics and Center for Biological Physics, Arizona State University, Tempe, AZ 85287-1504, USA.

Physical Biology

|July 15, 2009

Summary

This study introduces a new statistical method to identify plastic clusters in complex systems by analyzing relative motion between constituents across multiple snapshots. This tool, TIMME, helps understand evolving molecular dynamics.

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Area of Science:

Computational physics and chemistry
Statistical mechanics
Biophysics

Background:

Analyzing large datasets from simulations and experiments is crucial for understanding complex systems.
Extracting meaningful information from temporal snapshots requires advanced analytical methods.
Focusing on relative motion of constituents reveals key dynamic behaviors.

Purpose of the Study:

To develop a novel statistical method for identifying hierarchies of plastically connected objects.
To create a tool for analyzing the relative motion and plastic deformation of clusters in dynamic systems.
To apply this method to diverse systems including polymer chains, interacting bodies, and proteins.

Main Methods:

A statistical approach analyzing multiple system configurations (snapshots).
Identification of "plastic clusters" characterized by loose connectivity and deformability.
Implementation of the method as the Tool for Identifying Mobility in Macromolecular Ensembles (TIMME).

Main Results:

Successfully identified hierarchies of plastically connected objects in various systems.
Demonstrated the method's applicability to polymer models, 2D simulations, and protein dynamics.
TIMME effectively captures the relative motion and collective behavior of system constituents.

Conclusions:

The developed statistical method provides a powerful way to analyze complex system dynamics.
TIMME enables deeper insights into the collective motion and plastic deformation of molecular ensembles.
This approach is valuable for documenting and understanding the evolution of many-body systems.