The translation The primary function of a spring is to store elastic energy and—when required—release it again. The elastic energy stored per unit volume in a block of material stressed uniformly to a stress σ is Wv = 1 2 σ2 E
The translation The primary function of aspring is to store elastic energy and—whenrequired—release it again. The elastic energystored per unit volume in a block of materialstressed uniformly to a stress σ isWv = 12σ2E