Variable pitch spring calculations

AI Thread Summary
Calculating the spring constant of a variable pitch spring under compression is complex due to the changing stiffness as coils become inactive. The spring's effective stiffness increases with compression, necessitating a specific equation to determine the new spring constant after compression by a distance x. Resources such as academic papers on variable stiffness coil springs, particularly in vehicle applications, can provide insights and methodologies for these calculations. The discussion emphasizes the need for precise formulas to account for the unique behavior of variable pitch springs. Understanding these calculations is crucial for optimizing designs in engineering applications.
Malaps
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Hi,
does anyone know how to calculate the current spring constant of a variable pitch spring when under compression. Since some of its coils get inactive when compressed the stiffness is increasing and consequently “k” is changing as well, is there an equation I can use to calculate the new spring value after the spring is compressed by a distance x?
 
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