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Related Concept Videos

Deformation of Member under Multiple Loadings01:11

Deformation of Member under Multiple Loadings

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When a rod is made of different materials or has various cross-sections, it must be divided into parts that meet the necessary conditions for determining the deformation. These parts are each characterized by their internal force, cross-sectional area, length, and modulus of elasticity. These parameters are then used to compute the deformation of the entire rod.
In the case of a member with a variable cross-section, the strain is not constant but depends on the position. The deformation of an...
499
Temperature Dependent Deformation01:12

Temperature Dependent Deformation

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In a nonhomogeneous rod made up of steel and brass, restrained at both ends and subjected to a temperature change, several steps are involved in calculating the stress and compressive load. Due to the problem's static indeterminacy, one end support is disconnected, allowing the rod to experience the temperature change freely. Next, an unknown force is applied at the free end, triggering deformations in the rod's steel and brass portions. These deformations are then calculated and added...
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Deformation in a Circular Shaft01:10

Deformation in a Circular Shaft

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One of the distinctive characteristics of circular shafts is their ability to maintain their cross-sectional integrity under torsion. In other words, each cross-section continues to exist as a flat, unaltered entity, simply rotating like a solid, rigid slab. To understand the distribution of shearing stress within such a shaft, consider a cylindrical section inside this circular shaft. This section has a length of L and a radius of R, with one end fixed. The radius of the cylindrical section is...
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Plastic Deformations01:19

Plastic Deformations

480
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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Plastic Deformations01:14

Plastic Deformations

487
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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Deformations in a Transverse Cross Section01:21

Deformations in a Transverse Cross Section

662
When a material is subjected to uniaxial stress, it elongates or contracts in the direction of the applied force, and also undergoes changes in the perpendicular directions. This behavior is crucial for understanding how materials behave under stress and is governed by mechanical properties such as Poisson's ratio v, which measures the ratio of transverse strain to axial strain.
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Related Experiment Video

Updated: Feb 16, 2026

Quantification of Strain in a Porcine Model of Skin Expansion Using Multi-View Stereo and Isogeometric Kinematics
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Dynamic Volume Completion and Deformation.

Peter Ulric Tse1

  • 1Dartmouth College, Hanover, NH, USA.

I-Perception
|December 23, 2017
PubMed
Summary
This summary is machine-generated.

Illusory volumes can be perceived through dynamic visual cues, not just object outlines. This research shows 3D shape construction relies on motion, even without clear contour connections.

Keywords:
3D perceptionbinocular visioncontours/surfacesdepthgroupinghigher order motionshape

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Area of Science:

  • Cognitive psychology
  • Computational neuroscience
  • Visual perception

Background:

  • Previous research on visual perception focused on contour-based completion for object recognition.
  • The role of dynamic cues in 3D shape construction was not fully understood.

Purpose of the Study:

  • To introduce a novel class of dynamic volume completion.
  • To investigate the influence of dynamic cues on the perception of illusory volumes.
  • To challenge the notion that volume completion relies solely on contour relatability.

Main Methods:

  • Demonstrations involving occluding semi-ellipses at object edges.
  • Utilizing relative motion of image elements to induce dynamic cues.
  • Observing the perception of illusory volumes and their deformation.

Main Results:

  • Dynamic volume completion was observed, where elements linked across gaps to form illusory volumes.
  • These illusory volumes deformed with the relative motion of image elements.
  • Perception of 3D shape was influenced by dynamic cues, independent of contour relatability.

Conclusions:

  • Volume completion is a dynamic process, not solely based on static contour relationships.
  • Dynamic visual cues play a crucial role in 3D shape construction.
  • Illusory volumes can be generated and perceived through motion-based cues.