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Related Concept Videos

Virtual Work for a System of Connected Rigid Bodies01:06

Virtual Work for a System of Connected Rigid Bodies

471
Virtual work is a powerful method used to solve problems involving several connected rigid bodies. When the system is in equilibrium, virtual work is zero. This allows the calculation of the resulting forces when a system undergoes a virtual displacement. When attempting to analyze such a system, first, use a free-body diagram, where an independent coordinate represents the configuration of the links, and mark its deflected position resulting from the positive virtual displacement.
Next,...
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Virtual Work01:20

Virtual Work

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The principle of virtual work states that if a body is in static and dynamic equilibrium, then the sum of all the virtual work done by all external forces and couple moments for any given virtual displacement must be zero.
In static equilibrium, a body can experience an imaginary or virtual movement, such as displacement or rotation. The virtual work done by a force is equal to the dot product of force and virtual displacement in the direction of the force. When it comes to virtually rotating a...
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Unsymmetric Loading of Thin-Walled Members: Problem Solving01:07

Unsymmetric Loading of Thin-Walled Members: Problem Solving

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The shear center of a channel section with uniform thickness, height, and width, is determined by computing the shear force in the member and calculating the moments of inertia of the sections.
To compute the shear forces, find the shear flow at a specific distance from the endpoint using the vertical shear and the moment of inertia values. The total shear force on the flange is calculated by integrating the shear flow from one end of the flange to the other.
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Principle of Virtual Work: Problem Solving01:13

Principle of Virtual Work: Problem Solving

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The principle of virtual work is an essential concept in the field of mechanics and engineering. This is used to solve problems related to the equilibrium of a structure or system. It is based on the assumption that if a system is in equilibrium, the work done by all the forces during a virtual displacement is zero. This principle is applied by considering virtual displacements of the system and the corresponding work done by internal and external forces.
To apply the principle of virtual work,...
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Unsymmetric Loading of Thin-Walled Members01:23

Unsymmetric Loading of Thin-Walled Members

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Thin-walled members with non-symmetrical cross-sections are vital to engineering structures, offering material efficiency and structural integrity. However, unsymmetrical loading on these members leads to complex stress distributions, resulting in simultaneous bending and twisting can cause deformation or structural failure. The interaction between bending and twisting requires detailed analysis to ensure structural resilience.
The concept of the shear center is crucial in countering the...
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Machines: Problem Solving II01:30

Machines: Problem Solving II

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Machines are complex structures consisting of movable, pin-connected multi-force members that work together to transmit forces. Consider a lifting tong carrying a 100 kg load. It comprises movable sections DAF and CBG linked together with member AB.
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Related Experiment Video

Updated: Sep 10, 2025

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Application of virtual assembly for complex mechanical structures based on digital twin technology.

Jin Chuyun1, Lin Mu2

  • 1Zhejiang Institute of Communications, Hangzhou, 311112, Zhejiang, China.

Scientific Reports
|August 19, 2025
PubMed
Summary

This study introduces advanced virtual assembly methods using digital twin technology for complex mechanical structures. The approach enhances assembly efficiency and accuracy through high-fidelity models and improved human-computer interaction.

Keywords:
Complex mechanical structuresDigital twin technologyGesture recognition technologyHuman-computer interaction optimizationVirtual assembly methods

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Area of Science:

  • Mechanical Engineering
  • Computer-Aided Engineering
  • Digital Manufacturing

Background:

  • Traditional mechanical assembly faces challenges in efficiency and accuracy for complex structures.
  • Digital twin technology offers potential for virtualizing and optimizing manufacturing processes.

Purpose of the Study:

  • To develop advanced virtual assembly methodologies for complex mechanical structures.
  • To enhance human-computer interaction in virtual assembly environments.
  • To improve the precision and efficiency of mechanical assembly operations.

Main Methods:

  • Application of digital twin technology for creating high-fidelity virtual assembly models.
  • Integration of multi-level information modeling techniques.
  • Incorporation of gesture recognition technology for enhanced human-computer interaction.

Main Results:

  • Demonstrated significant improvements in the efficiency and accuracy of mechanical assembly.
  • Validated the feasibility and robustness of the proposed virtual assembly method.
  • Provided a foundation for advanced virtual assembly systems.

Conclusions:

  • The digital twin-driven virtual assembly approach enhances mechanical engineering processes.
  • Gesture recognition improves human-computer interaction in virtual assembly.
  • The methodology offers practical insights for optimizing complex mechanical assembly.