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Measurement of Spatial Stability in Precision Grip
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An elastica arm scale.

F Bosi1, D Misseroni1, F Dal Corso1

  • 1DICAM , University of Trento , via Mesiano 77, 38123 Trento, Italy.

Proceedings. Mathematical, Physical, and Engineering Sciences
|September 9, 2014
PubMed
Summary
This summary is machine-generated.

A novel deformable arm scale, utilizing flexible elastic laminas instead of rigid arms, is introduced. This innovative design achieves accurate load measurement through nonlinear equilibrium kinematics, offering a new approach to weighing systems.

Keywords:
Eshelbian forcesdeformable mechanismelasticasnake locomotion

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Area of Science:

  • Mechanical Engineering
  • Physics
  • Materials Science

Background:

  • Traditional rigid arm balances rely on simple lever mechanics.
  • Nonlinear mechanics can lead to unexpected equilibrium configurations.
  • Existing weighing systems may have limitations in specific applications.

Purpose of the Study:

  • To introduce and validate the theoretical concept of a deformable arm scale.
  • To explore the nonlinear equilibrium kinematics governing such a system.
  • To demonstrate the feasibility and accuracy of a deformable scale prototype.

Main Methods:

  • Theoretical introduction of nonlinear equilibrium kinematics for flexible rods.
  • Experimental validation using prototypes with flexible elastic laminas and inclined sliding sleeves.
  • Analysis of system behavior under applied vertical dead loads.

Main Results:

  • The deformable arm scale achieves a unique equilibrium configuration due to configurational forces.
  • Prototypes demonstrate high accuracy in load measurement within a defined operational range.
  • The system's behavior is linked to the phenomenon of snaking in confined beams.

Conclusions:

  • Deformable arm scales offer a viable alternative to traditional rigid balances.
  • The underlying principles have potential applications in robotics, biomechanics, and industrial processes.
  • Further research can explore advanced materials and configurations for enhanced performance.