Spring Volume: Solving Intro to Design Problem

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To find the volume of a spring, the formula used is (π*d²/4) * π*D*Nt, where Nt represents the number of turns. The instructor specified that the volume of a cylinder method is not applicable for this problem. Key design goals for springs under static loading include the spring constant, material suitability for environmental conditions, and dimensions. Additionally, considerations like free height, solid height, working height, and stress relaxation are crucial for static springs. Understanding these factors is essential for effective spring design.
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For Intro to Design I am working a problem where I need to find the volume of a spring. The instructor hinted that you CANNOT use volume of a cylinder and subtract inner diameter. Please help. Thanks
 
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joeTTU said:
For Intro to Design I am working a problem where I need to find the volume of a spring. The instructor hinted that you CANNOT use volume of a cylinder and subtract inner diameter. Please help. Thanks

What information is given in your problem statement?

CS
 
NVM got it the formula for vol is =(pi*d^2)/(4)*pi*D*Nt

Nt=# of turns
 
joeTTU said:
NVM got it the formula for vol is =(pi*d^2)/(4)*pi*D*Nt

Nt=# of turns

Correct!

CS
 
Let me ask you this though any insight in what you consider design goals for springs with static loading?
 
joeTTU said:
Let me ask you this though any insight in what you consider design goals for springs with static loading?

Well off of the top of my head I would say the spring constant, material (e.g. will it be used in a corrosive environment), and dimensions. Probably some more that I can't think of right now!

CS
 
On top of what Stewartcs mentioned, free height vs. solid height vs. working height are very important. Also, in static springs, stress relaxation is always a concern.
 

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