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

Stress Concentrations in Circular Shafts01:18

Stress Concentrations in Circular Shafts

524
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...
524
Mechanical Efficiency of Real Machines01:14

Mechanical Efficiency of Real Machines

1.2K
The mechanical efficiency of a machine is a fundamental concept that describes how effectively a machine can convert input work into output work. According to this concept, the efficiency of a machine is equal to the ratio of the output work to the input work. An ideal machine, meaning a machine that has no energy losses, has an efficiency of one. This implies that the input work and the output work are equal.
However, in reality, no machine can be truly ideal, and all of them experience some...
1.2K
Static and Kinetic Frictional Force01:05

Static and Kinetic Frictional Force

25.1K
One of the simpler characteristics of sliding friction is that it is parallel to the contact surfaces between systems, and is always in a direction that opposes the motion or attempted motion of the systems relative to each other. If two systems are in contact and moving relative to one another, then the friction between them is called kinetic friction. For example, kinetic friction slows a hockey puck sliding on ice.
However, if two systems are in contact and are stationary relative to one...
25.1K
Frictional Forces on Screws01:17

Frictional Forces on Screws

1.5K
Screws are characterized by a helical ridge known as a thread wrapped around a cylindrical shaft. They are commonly used as fasteners to hold objects together or to transmit power and motion in machines. One type of screw that is particularly useful for transmitting power is the square-threaded screw.
A jack with a square-threaded screw is a mechanical device used to lift heavy loads by applying a force at its handle. When the force is applied, the screw turns, raising the load. The screw can...
1.5K
Design Example: Deciding Thickness of Lubricating Fluid in a Shaft01:23

Design Example: Deciding Thickness of Lubricating Fluid in a Shaft

322
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...
322
Deformation in a Circular Shaft01:10

Deformation in a Circular Shaft

825
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...
825

You might also read

Related Articles

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

Sort by
Same author

Real-Time Lightweight Weld Seam Keypoint Detection and Tracking via an Improved SimCC with a Unified Three-Keypoint Formulation.

Sensors (Basel, Switzerland)·2026
Same author

WeldLight: A Lightweight Weld Classification and Feature Point Extraction Model for Weld Seam Tracking.

Sensors (Basel, Switzerland)·2025
Same author

Design and Modelling of Continuum Robot for Endoscopic Submucosal Dissection Surgery With Lifting Force Estimation.

The international journal of medical robotics + computer assisted surgery : MRCAS·2024
Same author

Compound continuum manipulator for surgery: Efficient static-based kinematics.

The international journal of medical robotics + computer assisted surgery : MRCAS·2023
Same author

Coupling Analysis of Compound Continuum Robots for Surgery: Another Line of Thought.

Sensors (Basel, Switzerland)·2023
Same author

YOLO-Weld: A Modified YOLOv5-Based Weld Feature Detection Network for Extreme Weld Noise.

Sensors (Basel, Switzerland)·2023
Same journal

Compliance Control of a Robotic Breast Ultrasound System Based on Variable Admittance Control.

The international journal of medical robotics + computer assisted surgery : MRCAS·2026
Same journal

Short-Term Outcomes of Upper-Dome Overlap Single-Flap Valvuloplasty Versus Kamikawa Anastomosis in Robotic Proximal Gastrectomy.

The international journal of medical robotics + computer assisted surgery : MRCAS·2026
Same journal

Adaptive Admittance Control for Robotic Ultrasound Examination Based on a Breast Biomechanical Model.

The international journal of medical robotics + computer assisted surgery : MRCAS·2026
Same journal

Robotic Choledochal Cyst Excision With Intracorporeal Roux-en-Y Hepaticojejunostomy in Adolescent and Adult Patients: Clinical and Quality-of-Life Outcomes.

The international journal of medical robotics + computer assisted surgery : MRCAS·2026
Same journal

Short-Term Outcomes and Quality of Life After Robotic Versus Laparoscopic Double-Flap Technique for Proximal Gastrectomy: A Retrospective Cohort Study.

The international journal of medical robotics + computer assisted surgery : MRCAS·2026
Same journal

Dual-Modal Safety Framework for Robotic-Assisted Bronchoscopy via Endoscopic Vision and Haptic Feedback.

The international journal of medical robotics + computer assisted surgery : MRCAS·2026
See all related articles

Related Experiment Video

Updated: Jan 12, 2026

Experiments on Ultrasonic Lubrication Using a Piezoelectrically-assisted Tribometer and Optical Profilometer
09:21

Experiments on Ultrasonic Lubrication Using a Piezoelectrically-assisted Tribometer and Optical Profilometer

Published on: September 28, 2015

13.0K

Optimising the Accuracy of Concentric Tube Robots: Using Vibration Friction Reduction.

Yao Wang1, Fuxin Du2,3, Gang Zhang2

  • 1Control Science Engineering Department, Shandong University, Jinan, China.

The International Journal of Medical Robotics + Computer Assisted Surgery : MRCAS
|November 6, 2025
PubMed
Summary
This summary is machine-generated.

This study introduces a vibration friction reduction (VFR) method to decrease friction in concentric tube robots (CTRs). The VFR approach successfully reduced positional errors in CTRs by 36.5%, enhancing surgical precision.

Keywords:
concentric tube robotsfriction analysismodellingvibration friction reduction

More Related Videos

Parametric Optimization Design Method for Friction Plates of Hydro-Viscous Clutches
10:58

Parametric Optimization Design Method for Friction Plates of Hydro-Viscous Clutches

Published on: July 22, 2025

590
A Method for Evaluating Timeliness and Accuracy of Volitional Motor Responses to Vibrotactile Stimuli
07:28

A Method for Evaluating Timeliness and Accuracy of Volitional Motor Responses to Vibrotactile Stimuli

Published on: August 2, 2016

7.6K

Related Experiment Videos

Last Updated: Jan 12, 2026

Experiments on Ultrasonic Lubrication Using a Piezoelectrically-assisted Tribometer and Optical Profilometer
09:21

Experiments on Ultrasonic Lubrication Using a Piezoelectrically-assisted Tribometer and Optical Profilometer

Published on: September 28, 2015

13.0K
Parametric Optimization Design Method for Friction Plates of Hydro-Viscous Clutches
10:58

Parametric Optimization Design Method for Friction Plates of Hydro-Viscous Clutches

Published on: July 22, 2025

590
A Method for Evaluating Timeliness and Accuracy of Volitional Motor Responses to Vibrotactile Stimuli
07:28

A Method for Evaluating Timeliness and Accuracy of Volitional Motor Responses to Vibrotactile Stimuli

Published on: August 2, 2016

7.6K

Area of Science:

  • Robotics
  • Medical Devices
  • Surgical Technology

Background:

  • Concentric tube robots (CTRs) offer significant advantages for minimally invasive surgery due to their compact size and flexibility.
  • High friction between robot tubes is a primary cause of accuracy degradation in CTR systems.
  • Reducing friction is crucial for improving the precision and effectiveness of CTRs in surgical procedures.

Purpose of the Study:

  • To investigate the efficacy of a novel vibration friction reduction (VFR) method for mitigating friction in CTRs.
  • To enhance the overall accuracy and precision of concentric tube robots for surgical applications.

Main Methods:

  • A CTR system integrated with a VFR mechanism, comprising four vibration motors and a 3D-printed component, was designed.
  • A variable-friction coefficient kinematic model for CTRs was developed to analyze vibration's impact on friction.
  • Experimental validation was performed to assess the performance of the VFR method.

Main Results:

  • The VFR method demonstrated a significant reduction in the positional error of CTRs.
  • Positional errors were reduced by approximately 36.5% using the VFR technique.
  • The study confirms the effectiveness of vibration-based friction reduction in improving CTR accuracy.

Conclusions:

  • This research presents a pioneering application of VFR for enhancing the accuracy of concentric tube robots.
  • The findings offer a new strategy for improving CTR performance in minimally invasive surgery.
  • The VFR method represents a promising advancement in robotic surgery technology.