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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.
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It is essential to understand how structural members behave under plastic deformation when the bending stress exceeds the material's yield strength. This state of deformation permanently alters the shape of the member, in contrast to the linear elastic behavior observed before yielding. The strain at any point in the member is expressed in terms of maximum strain. Notably, the neutral axis, which coincides with the centroid during elastic bending, shifts away from the centroid under plastic...
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Material Removal Modeling for Free-Form Rubber Materials.

Yaodong Zhang1, Weiqi Fu1, Yanzhao Ma1

  • 1School of Power and Mechanical Engineering, Wuhan University, Wuhan 430072, China.

Materials (Basel, Switzerland)
|April 24, 2025
PubMed
Summary
This summary is machine-generated.

This study develops a material removal model for robot disc grinding of rubber materials. The model optimizes robot grinding parameters and path planning for precise, efficient, and uniform shallow grinding of curved surfaces.

Keywords:
free-form workpiecematerial removal modelingrobotic grindingrubber grinding

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Area of Science:

  • Materials Science
  • Robotics
  • Manufacturing Engineering

Background:

  • Manual grinding of curved rubber is imprecise and inefficient.
  • Existing material removal models are unsuitable for rubber and shallow grinding applications.
  • Robotic grinding offers potential for improved precision and efficiency.

Purpose of the Study:

  • To develop a precise material removal model for robot disc grinding of rubber.
  • To optimize robot grinding parameters and path planning for curved rubber surfaces.
  • To address limitations of existing models for rubber materials and shallow grinding.

Main Methods:

  • Investigated contact mechanics during disc grinding of rubber.
  • Quantified grinding pressure and speed distributions.
  • Developed a material removal model based on the Preston equation.
  • Experimentally verified the model's validity.

Main Results:

  • Developed and validated a material removal model for free-form rubber surfaces.
  • The model accounts for elastic deformation and wear stages.
  • Demonstrated a negative correlation between grinding width/pressure and curvature radius for different surface shapes.

Conclusions:

  • The developed model enables precise and efficient robot grinding of curved rubber.
  • The findings facilitate optimization of robotic grinding processes for rubber materials.
  • This research advances the application of robotics in precision manufacturing of elastomers.