Thickness of materials in space?

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Discussion Overview

The discussion centers around the structural requirements for materials, specifically a 4'x8' aluminum plate and a 4'x8' sheet of glass, to withstand 1 atmosphere of pressure in the vacuum of space. Participants explore the thickness needed for these materials, considering their flat nature and potential applications in larger structures.

Discussion Character

  • Exploratory, Technical explanation, Debate/contested

Main Points Raised

  • One participant questions the thickness required for a 4'x8' aluminum plate and a glass sheet to hold 1 atmosphere in space.
  • Another participant suggests that researching 'plate theory' could provide useful insights.
  • A participant reiterates the initial question about thickness and emphasizes that flat materials need to be significantly thicker and heavier compared to curved surfaces, noting the rarity of flat surfaces in pressurized vessels.
  • Further discussion highlights the difficulty in finding information specific to flat materials, with one participant mentioning the availability of calculators for other shapes like cylinders and domes, but not for flat panels.
  • There is a consideration of using flat panels as part of a larger arced structure in space, suggesting a potential application for the thickness calculations.

Areas of Agreement / Disagreement

Participants express uncertainty regarding the specific thickness required for flat materials in a vacuum, with no consensus reached on the exact values or methods to determine them.

Contextual Notes

The discussion lacks specific calculations or established formulas for determining the thickness of flat materials under pressure in space, and the assumptions regarding material properties and structural design are not fully explored.

Who May Find This Useful

Individuals interested in aerospace engineering, materials science, or structural engineering may find this discussion relevant, particularly those exploring the design of pressurized structures in space environments.

Physt
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How thick would a 4'x8' aluminum plate need to be to hold 1 atmosphere in space?

What about a 4'x8' sheet of glass?
 
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What have you tried so far? Googling 'plate theory' would be a good start.
 
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Physt said:
How thick would a 4'x8' aluminum plate need to be to hold 1 atmosphere in space?

What about a 4'x8' sheet of glass?

It needs to be a lot thicker and heavier when it is a flat piece of material. That's why you don't see many flat surfaces on pressurized vessels... :smile:
 
berkeman said:
It needs to be a lot thicker and heavier when it is a flat piece of material. That's why you don't see many flat surfaces on pressurized vessels... :smile:

Yeah, that's why I'm having a tough time finding any information on the subject. I've found online calculators for cylinders, domes, elliptical arcs, pretty much anything that isn't flat - but I'm wondering if you were to build a massive structure with 4'x8' panels as a relatively small portion of it (not that they would be a complete wall, but that they would comprise maybe 3 degrees of a larger arced surface (or some other arbitarily massive structure for space).
 

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