Springs in Parallel
Springs in Parallel
Springs in parallel share the same deflection and their forces add, so the combination is stiffer than either spring.
The equivalent stiffness is k = k_1 + k_2. where k_1 and k_2 are the two spring rates.
Inputs
k_1 := 2000 N/m=2000 kg/s^2
k_2 := 3000 N/m=3000 kg/s^2
Parallel spring rates add.
k := k_1 + k_2=5000 kg/s^2
Results
The combined stiffness exceeds either spring — the way multiple suspension springs or bolts share and stiffen a load path.
Assumptions & limitations
- Linear springs.
- Common deflection.
- Rigid connection.