STRUCTURAL DAMPING IN PERMANENT JOINTS
FOREIGN TECHNOLOGY DIV WRIGHT-PATTERSON AFB OH
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Factors causing damping of vibrations of any system are influence of the medium in which the vibrations are performed aero- and hydrodynamic damping, internal friction in the material and, finally, friction in supports and couplings. It has at present become entirely clear that in the overwhelming majority of cases the most important role is played by friction losses in couplings of mechanical systems. Two classes of cases should be here distinctly distinguished 1 friction in moving couplings of the type of bearings, guides, etc. 2 friction in permanent joints press-fit, riveted, slotted, threaded and the like. While the problem of friction in moving joints has been studied for a long time, friction in permanent joints was subjected to investigation quite recently. The last type of damping is further called structural damping. The present work represents an attempt to generalize all the results obtained in this field, here the basic content of the book pertains to the theory of structural damping.
- Structural Engineering and Building Technology