Calculating Tension Life of a Spring

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To calculate the tension life of a spring for a valve application, it is essential to reference a material chart that correlates fatigue life with stress levels. If the spring's stress is below the curve, it is expected to last indefinitely, while intersection with the curve indicates a failure at a specific number of cycles. Detailed explanations and guidance can be found in the Material Science section, and resources like Mechanical Design or Theory of Machines textbooks are recommended for in-depth formulas. The calculations involve multiple variables, often exceeding eight, depending on the spring's material and application. Understanding these principles is crucial for ensuring the spring's reliability in its intended use.
araanandv2
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hi,

Our counterparts have designed a spring for a valve application.
the entire component depends on the tension of the spring
We need to calculate the tension life of a spring(i.e the duration for which the tension in a spring remains a constant)
Please provide me a solution

Thanks
 
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You need to find a chart of the material the spring is made out of that graphs the fatigue life vs. the stress. If your stress falls under the curve, it will last forever. If it intercepts the curve, it will fail at N-cycles.

Astronuc can give you a better explination. Thats a question for Material Science section.
 
try finding books of Mechanical Design subjects, or Theory of Machines. they usually contain such answers, they are long formulas with many many variables sometimes more than 8 variables that depend on the materials and applications of the spring. good luck
 
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