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Bending of Material: Problem Solving01:09

Bending of Material: Problem Solving

177
In this lesson, determine the ratio of the maximum bending moments applied to two metal pipes, given that both pipes can withstand a maximum stress of 100 MPa. Both pipes have an outer radius of 1.8 cm. Pipe A has an inner radius of 1.5 cm, and Pipe B has an inner radius of 1 cm. The ratio of the maximum bending moment applied to two metallic pipes, each with a different inner and outer radius, is determined by considering their dimensions. The inner radius of the first pipe is 1.5 cm, and for...
177

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An Investigation into Sheet-Inconel 718 Forming with Flexible and Metal Tools-Simulation and Experiment.

Maciej Balcerzak1, Stanislav Rusz2, Radek Čada2

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Summary

This study explores plastic forming of Inconel 718 sheets using elastomeric punches. Punch hardness significantly impacts shape reproduction, requiring adaptation for optimal results in Guerin method forming.

Keywords:
3D optical scanningInconel 718elastomeric punchesmetallic diesnumerical simulationsheet metal forming

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Area of Science:

  • Materials Science
  • Mechanical Engineering
  • Manufacturing Processes

Background:

  • Inconel 718 is a challenging nickel alloy for plastic forming.
  • Elastomeric tooling offers potential for forming difficult materials.
  • The Guerin method is a viable technique for sheet metal forming.

Purpose of the Study:

  • To investigate the influence of elastomeric punch hardness on the plastic forming of Inconel 718 sheets.
  • To compare numerical simulations with experimental results for validation.
  • To determine optimal elastomeric punch properties for precise shape reproduction.

Main Methods:

  • Numerical simulations and experimental tests were conducted.
  • Elastomeric punches (50-90 Shore A) and steel dies were employed.
  • The Guerin method was utilized with a custom-built device.
  • Optical 3D scanning assessed the geometry of formed elements.

Main Results:

  • Elastomeric punch hardness significantly affects the final part geometry and shape reproduction.
  • Numerical modeling results were validated by experimental data.
  • Layered elastomer matrix hardness is crucial for achieving desired drawpiece geometry.

Conclusions:

  • The hardness of elastomeric punches must be tailored to the specific drawpiece shape for Inconel 718 forming.
  • Achieving diversified shapes in final elements is an important consideration in Guerin method plastic forming.
  • Optimized elastomeric punch design enhances the precision of forming difficult-to-deform alloys.