Abstract
The deformation of the group bolted rectangular plate, which is used in large number as machine parts, is measured by the holographic-interferometry technique, and the behavior of the deformation is examined in detail. Furthermore the factors are examined which have effects on the spring characteristic of the joints, made up by the bolted plate and base. The following results are found. The tightening force, the length and thickness of the bolted plate, the position and number of bolts, and the combinations of the materials of plates and bases have the great effects on the deformation of the bolted plate. The proper design of the bolt position is enough to improve remarkably the flatness of the plate after tightened by bolts. The spring constant of the joint whoes interfaces are ground is determined mainly by the material of the base. The capability of the simulation of the bolted plate deformation by the theory of the beam on the elastic foundation is made sure, since the plate deformation obtained in the estimation of the spring constant agrees well with the one obtained in the experiment.
