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

Bending of Members Made of Several Materials01:11

Bending of Members Made of Several Materials

In analyzing a structural member composed of two different materials with identical cross-sectional areas, it is crucial to understand how their distinct elastic properties affect the member's response under load. The analysis involves assessing stress and strain distributions using the transformed section concept, which accounts for variations in material properties.
Hooke's Law determines stress in each material, stating that stress is proportional to strain but varies due to each material's...
Bending of Material: Problem Solving01:09

Bending of Material: Problem Solving

In this lesson, determine the ratio of the maximum bending moments applied to two metal pipes, given that both pipes can withstand a maximum stress of 100 MPa. Both pipes have an outer radius of 1.8 cm. Pipe A has an inner radius of 1.5 cm, and Pipe B has an inner radius of 1 cm. The ratio of the maximum bending moment applied to two metallic pipes, each with a different inner and outer radius, is determined by considering their dimensions. The inner radius of the first pipe is 1.5 cm, and for...
Design Consideration01:22

Design Consideration

Designing a structure involves a series of considerations, primarily the material's ultimate strength, calculated through tests that measure changes under increased force until the material reaches its breaking point or limit. The ultimate load, where the material breaks, is divided by its original cross-sectional area, resulting in the ultimate normal stress or strength. The ultimate shearing stress is another significant factor taken into account.
The factor of safety is another key aspect...
Fatigue01:21

Fatigue

Fatigue occurs when materials rupture under repeated or fluctuating loads, even at stress levels far below their static breaking strength. It typically results in brittle failure, even for ductile materials. It is a critical consideration in designing machines and structural components subjected to repetitive or varying loads. The nature of these loadings can range from fluctuating loads like unbalanced pump impellers causing vibrations to repeatedly bending a thin steel rod wire back and forth...
Yield Criteria for Ductile Materials under Plane Stress01:25

Yield Criteria for Ductile Materials under Plane Stress

In designing structural elements and machine parts using ductile materials, it is crucial to ensure that these components withstand applied stresses without yielding. Yielding is initially determined through a tensile test, which evaluates the material's response to uniaxial stress. However, tensile stress is insufficient when components face biaxial or plane stress conditions This condition requires advanced criteria to predict failure.
The Maximum Shearing Stress Criterion, also known as the...
Thin-Walled Hollow Shafts01:15

Thin-Walled Hollow Shafts

In analyzing a thin-walled hollow shaft subjected to torsional loading, a segment with width dx is isolated for examination. Despite its equilibrium state, this segment faces torsional shearing forces at its ends. These forces are quantitatively described by the product of the longitudinal shearing stress on the segment's minor surface and the area of this surface, leading to the concept of shear flow. This shear flow is consistent throughout the structure, indicating a uniform distribution of...

You might also read

Related Articles

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

Sort by
Same author

Development, Fabrication and Application of a Sectioned 3D-Printed Human Nasal Cavity Model for In Vitro Nasal Spray Deposition Studies.

Biomedicines·2026
Same author

Bioinspired Design of Ergonomic Tool Handles Using 3D-Printed Cellular Metamaterials.

Biomimetics (Basel, Switzerland)·2025
Same author

Bioinspired Design of 3D-Printed Cellular Metamaterial Prosthetic Liners for Enhanced Comfort and Stability.

Biomimetics (Basel, Switzerland)·2024
Same author

Thermo-Mechanical Behavior and Strain Rate Sensitivity of 3D-Printed Polylactic Acid (PLA) below Glass Transition Temperature (T<sub>g</sub>).

Polymers·2024
Same author

Development, fabrication and mechanical characterisation of auxetic bicycle handlebar grip.

Scientific reports·2023
Same author

Numerical Analysis of a Transtibial Prosthesis Socket Using 3D-Printed Bio-Based PLA.

Materials (Basel, Switzerland)·2023

Related Experiment Video

Updated: May 8, 2026

A Coupled Experiment-finite Element Modeling Methodology for Assessing High Strain Rate Mechanical Response of Soft Biomaterials
11:28

A Coupled Experiment-finite Element Modeling Methodology for Assessing High Strain Rate Mechanical Response of Soft Biomaterials

Published on: May 18, 2015

Recommendations for tool-handle material choice based on finite element analysis.

Gregor Harih1, Bojan Dolšak1

  • 1Laboratory for Intelligent CAD Systems, Faculty of Mechanical Engineering, University of Maribor, Smetanova ulica 17, SI-2000 Maribor, Slovenia.

Applied Ergonomics
|August 27, 2013
PubMed
Summary
This summary is machine-generated.

New composite materials for tool handles significantly reduce fingertip pressure, lowering the risk of trauma disorders. These advanced materials enhance user comfort and tool stability during manual work.

Keywords:
ErgonomicsFinite element analysisTool-handle material

More Related Videos

Knowledge Based Cloud FE Simulation of Sheet Metal Forming Processes
11:05

Knowledge Based Cloud FE Simulation of Sheet Metal Forming Processes

Published on: December 13, 2016

Cutting Procedures, Tensile Testing, and Ageing of Flexible Unidirectional Composite Laminates
07:53

Cutting Procedures, Tensile Testing, and Ageing of Flexible Unidirectional Composite Laminates

Published on: April 27, 2019

Related Experiment Videos

Last Updated: May 8, 2026

A Coupled Experiment-finite Element Modeling Methodology for Assessing High Strain Rate Mechanical Response of Soft Biomaterials
11:28

A Coupled Experiment-finite Element Modeling Methodology for Assessing High Strain Rate Mechanical Response of Soft Biomaterials

Published on: May 18, 2015

Knowledge Based Cloud FE Simulation of Sheet Metal Forming Processes
11:05

Knowledge Based Cloud FE Simulation of Sheet Metal Forming Processes

Published on: December 13, 2016

Cutting Procedures, Tensile Testing, and Ageing of Flexible Unidirectional Composite Laminates
07:53

Cutting Procedures, Tensile Testing, and Ageing of Flexible Unidirectional Composite Laminates

Published on: April 27, 2019

Area of Science:

  • Ergonomics and Human Factors
  • Materials Science
  • Biomechanics

Background:

  • Manual labor relies heavily on hand tools, with handle design impacting user performance and injury risk.
  • Existing research on tool handles focuses on size and shape, with less attention paid to material properties.
  • Optimizing tool handle materials is crucial for reducing acute and cumulative trauma disorders.

Purpose of the Study:

  • To investigate the impact of different tool handle materials on fingertip contact pressure using finite-element analysis.
  • To evaluate the effectiveness of composite materials in reducing pressure compared to homogeneous materials.
  • To understand the relationship between material deformation, contact pressure, and hand tool stability.

Main Methods:

  • Finite-element modeling of human fingertip grasping tool handles.
  • Simulation of homogeneous materials (steel, EPDM rubber) and composite materials (EPDM/EPDM foam, EPDM/PU foam).
  • Application of simulated finger forces to achieve contact pressures of 20, 40, 80, and 100 kPa.

Main Results:

  • EPDM rubber offered only a marginal reduction in contact pressure.
  • Both composite materials significantly reduced contact pressure, mitigating pressure-dependent trauma risks.
  • The PU foam composite demonstrated distinct deformation characteristics, deforming less at lower strain rates.

Conclusions:

  • Hyper-elastic foam composites effectively lower fingertip contact pressure, reducing trauma risks and enhancing comfort.
  • These materials maintain tool stability by controlling deformation rates.
  • Optimized tool handle materials are key to improving user safety and performance in manual tasks.