Calculation
E = ½ · k · x²
Energy grows with deflection squared; doubling deflection stores four times as much.
E = ½kx²
Stored energy in a linear spring
Energy grows with deflection squared; doubling deflection stores four times as much.
MINTSI
02
Result
Select a target and calculate.
Understand the inputs
- Spring energy E — Reversibly stored elastic energy.
- Spring rate k — Force increase per metre deflection.
- Deflection x — Compression or extension from free length.
Example
½ · 1,000 N/m · 0.1² m² = 5 J.
Assumptions and limits
Linear spring without damping or permanent deformation.
Sources