How can I determine the maximum load on a surface?

In summary, the individual is seeking help in determining the equations to use for calculating the maximum load (in pounds) on a sheet of plexiglass. They have a 10" x 10" x 1/8" sheet held by 4 screws and want to know the maximum weight their robotic arm can carry while on top of the plate. They mention knowing that the arm can theoretically carry up to 1 pound, but are looking for guidance in the right direction. The suggestion is made to do load testing instead of trying to calculate the maximum weight, and to be cautious of any impulse that may cause the sheet to break.
  • #1
r19ecua
17
0
I'm trying to determine what equations I can use in order to calculate the maximum load (in pounds) across a sheet of plexiglass. Could anyone help me look in the right direction? This is just a sheet that's 10" x 10" x 1/8", that's held by 4 screws. You see, my project involves placing my robotic arm on top of this sheet, but I want to know the maximum weight my arm can carry while on top of this plate! I know (theoretically) that my arm can carry up to 1 pound (approximately). Any direction?
 
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  • #2
Well, there are a lot of variables here. I would recommend you do load testing to find the maximum weight, rather than trying to calculate it.
The other thing you should watch out for is if your robot lifts something while it sits on your sheet, there will be an impulse that will make it 'weigh' more than it does, briefly, especially if the motion is rigid (not smooth and slow) - that will likely be the time it breaks.
 

Related to How can I determine the maximum load on a surface?

1. How do I calculate the maximum load on a surface?

The maximum load on a surface can be calculated by dividing the ultimate tensile strength of the material by the safety factor. The ultimate tensile strength can be found in material specifications and the safety factor is determined based on the specific application and level of risk.

2. What factors influence the maximum load on a surface?

The maximum load on a surface can be influenced by various factors such as the type and quality of the material, the geometry and dimensions of the surface, the temperature and environmental conditions, and the type and direction of applied force.

3. How can I test the maximum load on a surface?

The maximum load on a surface can be tested through various methods such as destructive testing where the surface is subjected to increasing loads until failure occurs, non-destructive testing where the surface is monitored for any deformations or changes under a specific load, or simulation using computer software.

4. Is the maximum load on a surface always the same for different materials?

No, the maximum load on a surface can vary for different materials as each material has its own unique properties and can withstand different levels of stress and force. It is important to determine the maximum load for each specific material and application.

5. How does the maximum load on a surface affect its durability?

The maximum load on a surface can affect its durability by causing deformation, cracking, or failure if the load exceeds the material's strength. It is important to consider the maximum load in the design and construction of surfaces to ensure their durability and longevity.

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