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

Mechanical Systems01:22

Mechanical Systems

540
Mechanical systems are analogous to to electrical networks where springs and masses play similar roles to inductors and capacitors, respectively. A viscous damper in mechanical systems functions similarly to a resistor in electrical networks, dissipating energy. The forces acting on a mass in such systems include an applied force in the direction of motion, counteracted by forces from the spring, a viscous damper, and the mass's acceleration. This interplay of forces is mathematically...
540
Circular Shafts - Elastoplastic Materials01:24

Circular Shafts - Elastoplastic Materials

408
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...
408
Members Made of Elastoplastic Material01:19

Members Made of Elastoplastic Material

337
The behavior of elastoplastic materials under bending stresses, particularly in structural members with rectangular cross-sections, is crucial for predicting material responses and understanding failure modes. Initially, when a bending moment is applied, the stress distribution across the section follows Hooke's Law and is linear and elastic. This distribution means the stress increases from the neutral axis to the maximum at the outer fibers, up to the elastic limit.
As the bending moment...
337
Euler's Formula to Columns: Problem Solving01:23

Euler's Formula to Columns: Problem Solving

897
Euler's formula is used in structural engineering to determine the buckling load of columns under various conditions. However, when dealing with systems that incorporate both rigid elements and elastic components, such as springs, the analysis requires a finer approach to determine the critical load. The problem described involves two rigid bars connected at a pivot point with a spring attached and a vertical load applied at one end.
The system comprises two vertical rigid bars, AB and BC, of...
897
Electro-mechanical Systems01:19

Electro-mechanical Systems

1.6K
Electromechanical systems are intricate configurations that effectively combine electrical and mechanical elements to achieve a desired outcome. Central to many of these systems is the DC motor, a device that converts electrical energy into mechanical motion, enabling various applications ranging from simple fans to complex robotic mechanisms.
A key component of the DC motor is the armature, a rotating circuit positioned within a magnetic field. As an electric current passes through the...
1.6K
Design Example: Deciding Thickness of Lubricating Fluid in a Shaft01:23

Design Example: Deciding Thickness of Lubricating Fluid in a Shaft

305
Effective lubrication between a rotating shaft and its bearing housing is essential in rotating machinery to minimize friction, wear, and energy loss. With carefully controlled thickness and viscosity, the lubricant layer prevents metal-to-metal contact, ensuring smooth operation.
To calculate the required thickness of the lubricant layer, the tangential velocity at the shaft's surface must first be determined. This velocity is calculated by converting the rotational speed to angular velocity...
305

You might also read

Related Articles

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

Sort by
Same author

Dissipativity-Based Output Feedback Control of Networked Sampled-Data Systems Under Actuator Failures and Consecutive DoS Attacks.

IEEE transactions on cybernetics·2026
Same author

Accurate proteome-wide prediction of enzymes and catalytic sites using graph deep learning and protein language model.

GigaScience·2026
Same author

A Lightweight Multi-Articular Passive Exoskeleton Using a Single Elastic Band to Improve Crouch Gait Pattern: A Pilot Study.

IEEE transactions on neural systems and rehabilitation engineering : a publication of the IEEE Engineering in Medicine and Biology Society·2026
Same author

Correction: Development and validation of a sliding type continuous passive motion automation device for evaluation and rehabilitation of frozen shoulder.

Frontiers in rehabilitation sciences·2026
Same author

Double-Layer Self-Locking Origami Based on Opposite Folding Motion.

Soft robotics·2025
Same author

Foldable and rollable interlaced structure for deployable robotic systems.

Science robotics·2025

Related Experiment Video

Updated: Jan 5, 2026

Fabrication of Carbon-Based Ionic Electromechanically Active Soft Actuators
14:42

Fabrication of Carbon-Based Ionic Electromechanically Active Soft Actuators

Published on: April 25, 2020

8.7K

Interfacing Soft and Hard: A Spring Reinforced Actuator.

Hing-Choi Fu1, Justin D L Ho1, Kit-Hang Lee1

  • 1Department of Mechanical Engineering, The University of Hong Kong, Hong Kong, China.

Soft Robotics
|October 16, 2019
PubMed
Summary
This summary is machine-generated.

This study introduces a novel spring reinforced actuator (SRA) for soft robots, enhancing dynamic performance and force output while maintaining compliant bending. This innovation bridges the gap between muscular hydrostats and traditional robots.

Keywords:
bio-inspired robotcontinuum robotfluid-driven actuatorsoft material robotics

More Related Videos

Fabrication of Soft Pneumatic Network Actuators with Oblique Chambers
07:09

Fabrication of Soft Pneumatic Network Actuators with Oblique Chambers

Published on: August 17, 2018

9.5K
Rapid Manufacturing of Thin Soft Pneumatic Actuators and Robots
08:47

Rapid Manufacturing of Thin Soft Pneumatic Actuators and Robots

Published on: November 8, 2019

8.0K

Related Experiment Videos

Last Updated: Jan 5, 2026

Fabrication of Carbon-Based Ionic Electromechanically Active Soft Actuators
14:42

Fabrication of Carbon-Based Ionic Electromechanically Active Soft Actuators

Published on: April 25, 2020

8.7K
Fabrication of Soft Pneumatic Network Actuators with Oblique Chambers
07:09

Fabrication of Soft Pneumatic Network Actuators with Oblique Chambers

Published on: August 17, 2018

9.5K
Rapid Manufacturing of Thin Soft Pneumatic Actuators and Robots
08:47

Rapid Manufacturing of Thin Soft Pneumatic Actuators and Robots

Published on: November 8, 2019

8.0K

Area of Science:

  • Soft Robotics
  • Mechanical Engineering
  • Materials Science

Background:

  • Muscular hydrostats inspire compliant soft robots for unpredictable environments and gentle manipulation.
  • Existing soft robots lack high force output and fast-dynamic response capabilities.
  • A performance gap exists between compliant hydrostats and rigid endoskeletal mechanisms.

Purpose of the Study:

  • To propose and investigate a novel spring reinforced actuator (SRA) for soft robots.
  • To explore an intermediate design state between muscular hydrostats and endoskeletal mechanisms.
  • To significantly enhance dynamic performance and force capabilities in soft robotic actuators.

Main Methods:

  • Developed a novel spring reinforced actuator (SRA) design.
  • Created and experimentally validated an analytical model for the flexible backbone.
  • Performed detailed finite element analysis (FEA) on the braided bellow tube's strain-stress behavior, modeling complex thread contacts.
  • Experimentally evaluated SRA actuation force, stiffness, and dynamic response.

Main Results:

  • The SRA design dramatically enhances soft robot dynamic performance, achieving unprecedented speed and force.
  • The actuator retains compliant omnidirectional bending, characteristic of muscular hydrostats.
  • FEA provided insights into the complex mechanics of the braided bellow, crucial for actuator function.
  • Experimental results confirmed significant improvements in actuation force, stiffness, and dynamic response.

Conclusions:

  • The spring reinforced actuator (SRA) successfully bridges the performance gap in soft robotics.
  • SRAs offer enhanced dynamic capabilities while maintaining compliance, suitable for demanding applications.
  • This work paves the way for more versatile and powerful soft robotic systems in locomotion and manipulation.