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

Magnetic Damping01:17

Magnetic Damping

990
Eddy currents can produce significant drag on motion, called magnetic damping. For instance, when a metallic pendulum bob swings between the poles of a strong magnet, significant drag acts on the bob as it enters and leaves the field, quickly damping the motion.
If, however, the bob is a slotted metal plate, the magnet produces a much smaller effect. When a slotted metal plate enters the field, an emf is induced by the change in flux; however, it is less effective because the slots limit the...
990
Stresses in a Shaft01:18

Stresses in a Shaft

801
The shaft PQ is subjected to a twisting force when equal and opposite torques are applied on either side. A section that cuts perpendicular to the shaft's axis at any arbitrary point R is examined to understand this. When the free-body diagram of the QR segment is analyzed, it reveals the shearing forces exerted by the PR portion onto the QR segment as the shaft experiences twisting.
Applying equilibrium conditions to the QR segment establishes that the internal shearing forces within the...
801
Stress Concentrations in Circular Shafts01:18

Stress Concentrations in Circular Shafts

503
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...
503
Eccentric Axial Loading in a Plane of Symmetry01:16

Eccentric Axial Loading in a Plane of Symmetry

522
Eccentric axial loading occurs when an axial load is applied away from the centroidal axis of a structural member. This scenario is common in engineering, where structural elements may not be directly aligned due to various design or functional requirements.
522
Bending and Torsional Moments01:20

Bending and Torsional Moments

5.4K
Bending and torsional moments are two fundamental concepts in structural engineering. They play an important role in understanding the behavior of materials and structures under different loading conditions.
The reaction developed in a structural element when subjected to an external force causes the element to bend. When a structural element bends upwards, it creates compressive normal forces on the top and tensile normal forces on the bottom, resulting in a couple that determines the bending...
5.4K
Residual Stresses in Circular Shafts01:10

Residual Stresses in Circular Shafts

496
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...
496

You might also read

Related Articles

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

Sort by
Same author

Outcomes of transanal vs laparoscopic total mesorectal excision for mid and low rectal cancer under routine clinical practice conditions.

Surgical endoscopy·2026
Same author

NUSAP1 mediates enzalutamide resistance in prostate cancer via Wnt/β-catenin signalling-dependent regulation of AR and AR-V7.

Cellular signalling·2026
Same author

Does higher HBeAg seroclearance mean better clinical response?

Clinics and research in hepatology and gastroenterology·2026
Same author

Characterization of T5DL·5DS-2RS, a wheat-rye chromosomal translocation with enhanced grain hardness and pre-harvest sprouting resistance.

TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik·2026
Same author

Comparative Transcriptomic Analysis of Chlorophyll Metabolism in Broccoli Under Preharvest 1-MCP Application Versus Pre-Cooling Combined with Cold Chain Storage.

Foods (Basel, Switzerland)·2026
Same author

Letter to the editor: Toward precision use of antibiotic bead pouches in severe open lower extremity fractures.

Injury·2026

Related Experiment Video

Updated: Jan 9, 2026

Optimization, Test and Diagnostics of Miniaturized Hall Thrusters
12:22

Optimization, Test and Diagnostics of Miniaturized Hall Thrusters

Published on: February 16, 2019

9.5K

Microvibration Testing and Decoupling for Space Payloads with Large Inertia, High Stiffness, and Discrete Interfaces.

Renkui Jiang1, Wei Liang1, Libin Wang1

  • 1Institute of Optics and Electronics, Chinese Academy of Sciences, Chengdu 610209, China.

Sensors (Basel, Switzerland)
|December 11, 2025
PubMed
Summary
This summary is machine-generated.

A new semi-physical simulation method accurately measures microvibrations from the China Space Station Telescope's Survey Camera (SC). This technique overcomes structural coupling issues, ensuring precise imaging quality evaluation for space telescopes.

Keywords:
China Space Station Telescopecoupled microvibration analysismicrovibration testingsemi-physical simulation

More Related Videos

A Vibrotactile Feedback Device for Seated Balance Assessment and Training
09:13

A Vibrotactile Feedback Device for Seated Balance Assessment and Training

Published on: January 20, 2019

6.8K
Real-Time DC-dynamic Biasing Method for Switching Time Improvement in Severely Underdamped Fringing-field Electrostatic MEMS Actuators
11:44

Real-Time DC-dynamic Biasing Method for Switching Time Improvement in Severely Underdamped Fringing-field Electrostatic MEMS Actuators

Published on: August 15, 2014

10.7K

Related Experiment Videos

Last Updated: Jan 9, 2026

Optimization, Test and Diagnostics of Miniaturized Hall Thrusters
12:22

Optimization, Test and Diagnostics of Miniaturized Hall Thrusters

Published on: February 16, 2019

9.5K
A Vibrotactile Feedback Device for Seated Balance Assessment and Training
09:13

A Vibrotactile Feedback Device for Seated Balance Assessment and Training

Published on: January 20, 2019

6.8K
Real-Time DC-dynamic Biasing Method for Switching Time Improvement in Severely Underdamped Fringing-field Electrostatic MEMS Actuators
11:44

Real-Time DC-dynamic Biasing Method for Switching Time Improvement in Severely Underdamped Fringing-field Electrostatic MEMS Actuators

Published on: August 15, 2014

10.7K

Area of Science:

  • Space optics and instrumentation
  • Vibrational analysis and structural dynamics
  • Finite element modeling

Background:

  • Microvibrations from the Survey Camera (SC) of the China Space Station Telescope (CSST) degrade imaging quality.
  • Accurate microvibration evaluation is critical for telescope performance.
  • Structural coupling between large payloads and test systems distorts microvibration test results.

Purpose of the Study:

  • To develop a semi-physical simulation method for microvibration decoupling.
  • To accurately extract the intrinsic microvibration responses of the SC.
  • To enable dynamic decoupling analysis of complex coupled systems.

Main Methods:

  • Establish a coupled finite element model of the SC and the test system.
  • Iteratively modify the model using modal and transmissibility test results.
  • Validate the model through microvibration response tests.

Main Results:

  • The modified coupled model accurately reflects the dynamic characteristics of the actual coupled system.
  • Microvibration response tests showed good agreement between the model and the actual system (RMS force/torque deviation < 5%).
  • The intrinsic microvibration responses of the SC were successfully extracted after decoupling.

Conclusions:

  • The proposed semi-physical simulation method effectively achieves dynamic decoupling for complex coupled systems.
  • This approach enables accurate microvibration analysis of space-based optical instruments like the CSST SC.
  • The findings are crucial for ensuring high-quality imaging in space telescopes.