Abstract: This paper is the first of a series of two dealing with spiral power springs (i.e., motor springs or clock springs). A new theoretical treatment is presented which, neglecting friction, predicts ...

Abstract: The theoretical model developed in a preceding companion paper for predicting the torque-turn behavior of a spiral power spring is extended in an effort to improve the practical applicability. ...

Abstract: A theoretical model is developed in an effort to predict the effect of various design and operating parameters on the mechanics of punching circular holes in relatively ductile, nonmetallic ...