Hollow Metal disc loading - the needed thickness of the disc?

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SUMMARY

The discussion focuses on calculating the necessary thickness of a hollow metal disc to support a load of 1 kg distributed over its surface area. The disc has an outer diameter (OD) of 10 cm and an inner diameter (ID) of 5 cm, and is supported by three bars along its ring. To determine the required thickness, users are directed to Roark's Formulas for Stress and Strain, specifically Chapter 11, which provides the necessary formulas and guidance for such calculations.

PREREQUISITES
  • Understanding of basic mechanics of materials
  • Familiarity with stress and strain concepts
  • Knowledge of Roark's Formulas for Stress and Strain
  • Ability to perform calculations involving circular plates and load distribution
NEXT STEPS
  • Study Roark's Formulas for Stress and Strain, Chapter 11 for detailed calculations
  • Learn about the mechanics of circular plates under load
  • Research material properties relevant to hollow metal discs
  • Explore finite element analysis (FEA) tools for simulating load conditions
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Mechanical engineers, structural engineers, and materials scientists interested in load-bearing calculations for hollow structures.

ambroa
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Hi,
how to calculate the limit of load you can place on the top of the circular plate with a quite big circular hole in it (OD 10 cm, ID 5 cm)? the question is how to calculate the thickness needed to bear 1 kg which is spread on the whole area (1 kg heavy object with the same shape as the plate, a hollow cylinder 10 cm x 5 cm x some height). The plate is in the air, supported by 3 bars on the ring of the plate.
thank you for any help/advice! This is not a homework, I don't want to "get the solution" but be able to compute it for material I'd use than.

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Roark's Formulas for Stress and Strain Chapter 11 has this.
 

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