Influence of the Nut High on Load Distribution of Bolted Joint

Abstract

Many threaded fasteners are used for joining of machine structures. Therefore, development of the bolt and nut excellent in fatigue and fracture is very important. It is necessary to get to know the load distribution on the screw thread for the se researches. There are many researches which used an experiment, theory, and FEM analysis among the researches about the load distribution of the screw thread. However, since there are few examples of research about nut height, it solves about maximum load and its position for the difference in nut length. In this report, the method of measuring the load distribution using strain gauge was proposed, and it compared with the theory of Sopwith and the FEM analysis. The thread type compared with a triangle tooth thread about a case of a buttress tooth thread.