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

Deformation in a Circular Shaft01:10

Deformation in a Circular Shaft

299
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...
299
Stress Concentrations in Circular Shafts01:18

Stress Concentrations in Circular Shafts

184
Consider the elastic torsion formula, which applies to a circular shaft with a consistent cross-section. This formula assumes that the shaft's ends are loaded with rigid plates firmly attached. However, in many cases, torques are applied to the shaft through mechanisms like flange couplings or gears, which are connected by keys inserted into keyways. This application method modifies the stress distribution near the point of torque application, causing it to deviate from the distributions...
184
Residual Stresses in Circular Shafts01:10

Residual Stresses in Circular Shafts

179
In materials that exhibit elastic and plastic behavior, known as elastoplastic materials, residual stresses can accumulate when these materials experience plastic deformation. This deformation arises from either high levels of shearing stress or significant strains. Residual stresses are internal stresses that persist within a material after removing the external force causing deformation. This phenomenon is demonstrated when observing the behavior of a shaft under torque; notably, the...
179
Circular Shafts - Elastoplastic Materials01:24

Circular Shafts - Elastoplastic Materials

107
The study of solid circular shafts under stress shows that within the elastic limit, stress increases directly to the distance from the shaft's center. This relationship holds until the shaft reaches a critical point of stress, beyond which it begins to yield, marking the transition from elastic to plastic deformation. At this crucial juncture, the maximum torque the shaft can endure without permanent deformation is determined, signifying the limit of its elastic behavior.
As torque on the...
107
Circular Shaft - Stresses in Linear Range01:13

Circular Shaft - Stresses in Linear Range

251
Consider a scenario where a circular shaft is subject to torque that remains within the boundaries of Hooke's Law, avoiding any permanent deformation. So, the formula for shearing strain is revisited. This formula is multiplied by the modulus of rigidity, and then Hooke's Law for the shearing stress and strain is applied. As a result, the equation for shearing stress in a shaft can be derived.
251
Plastic Deformation in Circular Shafts01:20

Plastic Deformation in Circular Shafts

191
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...
191

You might also read

Related Articles

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

Sort by
Same author

Pain and health-related quality of life for children with lower limb absence: An exploratory study.

Clinical rehabilitation·2026
Same author

A clinical applicable study on lower limb segmentation from CT images for total knee arthroplasty.

The Knee·2026
Same author

Comparing low-cost monocentric and polycentric prosthetic knees: User satisfaction among persons with unilateral above- and through-knee amputations.

Prosthetics and orthotics international·2026
Same author

Understanding long-term physical and psychosocial outcomes from conflict to rehabilitation through the ADVANCE cohort.

Communications medicine·2026
Same author

Children in Cambodia provide key design priorities for below-knee prostheses: Independence, functionality, comfort and cosmetic appearance.

Assistive technology : the official journal of RESNA·2026
Same author

Understanding the effects of suspension systems on lower-limb prosthesis rotation.

Prosthetics and orthotics international·2026

Related Experiment Video

Updated: Jul 11, 2025

Adjustable Stiffness, External Fixator for the Rat Femur Osteotomy and Segmental Bone Defect Models
10:09

Adjustable Stiffness, External Fixator for the Rat Femur Osteotomy and Segmental Bone Defect Models

Published on: October 9, 2014

22.6K

Developments in circular external fixators: A review.

Kithmi N D Widanage1, Manura Jithmal De Silva2, Thilina Dulantha Lalitharatne3

  • 1Department of Engineering and Design, University of Sussex, Falmer, Brighton, BN1 9RH, United Kingdom; Department of Mechanical Engineering, University of Moratuwa, Moratuwa, 10400, Sri Lanka.

Injury
|November 11, 2023
PubMed
Summary

This review analyzes circular external fixators (CEFs) for orthopedic use. It highlights design advancements and identifies research gaps in assembly, monitoring, and global participation for improved bone healing.

Keywords:
Circular external fixatorDesign of circular fixatorsExternal fixationIlizarov ring fixatorReviewTaylor spatial frame

More Related Videos

A Reliable and Reproducible Critical-Sized Segmental Femoral Defect Model in Rats Stabilized with a Custom External Fixator
08:20

A Reliable and Reproducible Critical-Sized Segmental Femoral Defect Model in Rats Stabilized with a Custom External Fixator

Published on: March 24, 2019

8.7K
An Efficient and Reproducible Protocol for Distraction Osteogenesis in a Rat Model Leading to a Functional Regenerated Femur
09:26

An Efficient and Reproducible Protocol for Distraction Osteogenesis in a Rat Model Leading to a Functional Regenerated Femur

Published on: October 23, 2017

7.6K

Related Experiment Videos

Last Updated: Jul 11, 2025

Adjustable Stiffness, External Fixator for the Rat Femur Osteotomy and Segmental Bone Defect Models
10:09

Adjustable Stiffness, External Fixator for the Rat Femur Osteotomy and Segmental Bone Defect Models

Published on: October 9, 2014

22.6K
A Reliable and Reproducible Critical-Sized Segmental Femoral Defect Model in Rats Stabilized with a Custom External Fixator
08:20

A Reliable and Reproducible Critical-Sized Segmental Femoral Defect Model in Rats Stabilized with a Custom External Fixator

Published on: March 24, 2019

8.7K
An Efficient and Reproducible Protocol for Distraction Osteogenesis in a Rat Model Leading to a Functional Regenerated Femur
09:26

An Efficient and Reproducible Protocol for Distraction Osteogenesis in a Rat Model Leading to a Functional Regenerated Femur

Published on: October 23, 2017

7.6K

Area of Science:

  • Orthopedic biomechanics
  • Biomaterials engineering
  • Medical device design

Background:

  • Circular external fixators (CEFs) offer superior stiffness for bone healing.
  • Optimal biomechanical performance through CEF structural and component design is not fully understood.
  • A comprehensive review is needed to consolidate current knowledge and identify future research directions.

Purpose of the Study:

  • To systematically review circular external fixator designs and their biomechanical implications.
  • To identify trends, research gaps, and future directions in CEF development.
  • To follow PRISMA guidelines for a rigorous and transparent review process.

Main Methods:

  • Systematic literature search on Scopus and PubMed using relevant keywords.
  • Patent search conducted on the Google Patent database.
  • PRISMA-compliant review of 126 eligible records, including bibliometric analysis.

Main Results:

  • Summarized and tabulated various CEF designs based on specific features.
  • Discussed developments in materials, automation, adjustment methods, component design, wire-clamping, and performance evaluation.
  • Identified significant research gaps, including ease of assembly, effective wire-clamping, and integrated patient-monitoring systems.

Conclusions:

  • CEF design has advanced significantly, but key areas require further research for enhanced clinical application.
  • Future research should focus on improving assembly, developing robust clamping mechanisms, and incorporating real-time monitoring.
  • Increased research engagement from low- and middle-income countries is crucial for global advancement in CEF technology.