I am using an extension spring that absorbs shocks. It broke more often than we had calculated. How should we calculate the impact of shocks on the service?
Spring Newbie, is the shocks applied by the extension coil spring caused by the fact that when the tension is released, the coils move in the direction of contraction and the coils collide against each other? If it is the case, it is difficult to estimate the service life with high accuracy in anticipation of the degree of impact. The reason is that the effects of material flaws that occur during impact are unpredictable. If it is difficult to estimate the fatigue strength by calculation, we recommend that you check it by conducting a durability test.
In addition, as a countermeasure against early breakage, it is necessary to investigate the spring that caused the breakage and identify the cause. If it is fatigue fracture, it is necessary to reduce the load, and if it is from a defect, it is necessary to consider how to use it and protective measures that will not cause the defect. Thank you!
