MATHEMATICAL MODEL FOR RUBBER HYSTERESIS, In addition to the aid received from the doctor alcommittee and the technicians of the Applied Mechanics Department, there are several people who require specialthanks. Professor S. K. Clark, who has served as chairman on this project, has also provided financial support and valuable experience through other research projects over the last five years. Dr. K. K. Wyckoff served as a constant source of advice and assurance. Remo Luchini aided in the construction of the load cell and provided other special services. And last, but not least, is my wife, Tamara. Providing words of encouragement and financial support, she has typed and edited this dissertation and will present me with our first child about the same time Rackham will be presenting me with my degree. Thus, I dedicate this work to you, Tamara.