Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Elastic Strain Energy for Shearing Stresses01:20

Elastic Strain Energy for Shearing Stresses

623
As discussed in previous lessons, strain energy in a material is the energy stored when it is elastically deformed, a concept crucial in materials science and mechanical engineering. This energy results from the internal work done against the cohesive forces within the material. When a material undergoes shearing stress and corresponding shearing strain, the strain energy density, which is the energy stored per unit volume, is calculated. Within the elastic limit, where the stress is...
623
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

745
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.
745
Three-Dimensional Analysis of Strain01:29

Three-Dimensional Analysis of Strain

734
Three-dimensional strain analysis is crucial for understanding how materials deform under stress, particularly in elastic, homogeneous materials. This method employs principal stress axes to simplify complex stress states into more understandable forms. Subjected to stress, a small cubic element within a material either expands or contracts along these axes, transforming into a rectangular parallelepiped. This transformation effectively illustrates the material's deformation. The principal...
734
Normal Strain under Axial Loading01:20

Normal Strain under Axial Loading

1.6K
Normal strain under axial loading is an important concept in the field of mechanics of materials. Axial loading implies the application of a force along the axis of a material, like a column or bar. This force can either compress or stretch the material. In the context of axial loading, normal strain is the deformation experienced by the material in the direction of the loading force. It's calculated as the change in length divided by the original length of the material. This unitless ratio...
1.6K
Plastic Deformations01:14

Plastic Deformations

649
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...
649
Transformation of Plane Strain01:12

Transformation of Plane Strain

625
When analyzing elongated structures like bars subjected to uniformly distributed loads, it is essential to understand the transformation of plane strain when coordinate axes are rotated. This transformation helps to assess how material deformation characteristics vary with orientation, which is crucial in materials science and structural engineering.
Under plane strain conditions, typical for members where one dimension significantly exceeds the others, deformations and resultant strains are...
625

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Dual reactivity of several monoclonal anti-nucleosome autoantibodies for double-stranded DNA and a short segment of histone H3.

The Journal of biological chemistry·1996
Same author

A rapid screening procedure to identify mini-Tn10 insertion mutants of Escherichia coli K-12 with altered adhesion properties.

FEMS microbiology letters·1996
Same author

Inhibition of submandibular and lacrimal gland infiltration in nonobese diabetic mice by transgenic expression of soluble TNF-receptor p55.

The Journal of clinical investigation·1996
Same author

Regulation of adenine nucleotide translocase and glycerol 3-phosphate dehydrogenase expression by thyroid hormones in different rat tissues.

The Biochemical journal·1996
Same author

Molecular cloning and characterization of a putative glutathione reductase gene, the PfGR2 gene, from Plasmodium falciparum.

European journal of biochemistry·1996
Same author

Interspecies comparison of in vitro plasma degradation of dynorphin A 1-13.

Die Pharmazie·1996

Related Experiment Video

Updated: Apr 6, 2026

Full-field Strain Measurements for Microstructurally Small Fatigue Crack Propagation Using Digital Image Correlation Method
07:37

Full-field Strain Measurements for Microstructurally Small Fatigue Crack Propagation Using Digital Image Correlation Method

Published on: January 16, 2019

10.2K

Size effects and strain localization in atomic-scale cleavage modeling.

B A M Elsner1, S Müller

  • 1Institute of Advanced Ceramics, Hamburg University of Technology, Denickestraße 15, 21073 Hamburg, Germany.

Journal of Physics. Condensed Matter : an Institute of Physics Journal
|July 30, 2015
PubMed
Summary

Density functional theory (DFT) reveals how copper surfaces break apart. Structural relaxations and energy barriers influence decohesion, showing strain localization similar to crack propagation.

More Related Videos

Probing C84-embedded Si Substrate Using Scanning Probe Microscopy and Molecular Dynamics
13:58

Probing C84-embedded Si Substrate Using Scanning Probe Microscopy and Molecular Dynamics

Published on: September 28, 2016

12.3K
Investigating Receptor-ligand Systems of the Cellulosome with AFM-based Single-molecule Force Spectroscopy
11:34

Investigating Receptor-ligand Systems of the Cellulosome with AFM-based Single-molecule Force Spectroscopy

Published on: December 20, 2013

7.9K

Related Experiment Videos

Last Updated: Apr 6, 2026

Full-field Strain Measurements for Microstructurally Small Fatigue Crack Propagation Using Digital Image Correlation Method
07:37

Full-field Strain Measurements for Microstructurally Small Fatigue Crack Propagation Using Digital Image Correlation Method

Published on: January 16, 2019

10.2K
Probing C84-embedded Si Substrate Using Scanning Probe Microscopy and Molecular Dynamics
13:58

Probing C84-embedded Si Substrate Using Scanning Probe Microscopy and Molecular Dynamics

Published on: September 28, 2016

12.3K
Investigating Receptor-ligand Systems of the Cellulosome with AFM-based Single-molecule Force Spectroscopy
11:34

Investigating Receptor-ligand Systems of the Cellulosome with AFM-based Single-molecule Force Spectroscopy

Published on: December 20, 2013

7.9K

Area of Science:

  • Materials Science
  • Computational Physics
  • Surface Science

Background:

  • Understanding surface adhesion and decohesion is crucial for materials engineering.
  • Previous models, like the Universal Binding Energy Relation (UBER), have limitations in capturing complex surface behaviors.

Purpose of the Study:

  • To investigate the adhesion and decohesion mechanisms of Copper (Cu)(100) surfaces.
  • To address the unphysical size effects observed in decohesion models when including structural relaxations.

Main Methods:

  • Utilizing density functional theory (DFT) calculations for atomic-level simulations.
  • Employing the nudged elastic band (NEB) method to analyze transition pathways and energy barriers.
  • Comparing simulation results with principles of linear elastic fracture mechanics.

Main Results:

  • The Universal Binding Energy Relation (UBER) provides an initial estimate but is limited to rigid surfaces.
  • Including structural relaxations reveals an unphysical size effect in simple decohesion models.
  • The nudged elastic band (NEB) method demonstrates that energy barriers exhibit size-dependency, counteracting the apparent size effect.
  • Observed bond strain localization near the cleavage plane mimics crack tip behavior.

Conclusions:

  • Decohesion in Cu(100) surfaces is a complex process influenced by structural relaxations and energy barriers.
  • The study highlights the importance of advanced computational methods like NEB for accurate modeling of surface separation.
  • Findings suggest a mechanical analogy between surface decohesion and crack propagation in materials.