An Experimental Investigation Of The Oblique Impact Of Spheres Upon Simply Supported Steel Beams

Author:  Goldsmith, W. and Cunningham, D.M.
Source:  SESA, Vol. XIV, No. 1
Doc ID:  1956020
Year of Publication:  1956
Abstract:  
A cpmprehensive program of study cncerning the impact of spheres upon simply supported beams at oblique angles of incidence has been initiated. The initial impact velocity of 150ft/sec for a 1/2 in diameter steel ball is such as to generate permanent indentation at the contact point. The present paper describes the equipment and instrumentation employed in the investigation as well as the results obtained for a typical test run. The experimental data permit the construction of the complete stress and deflection history o the beam and the trajectory of the ball, including the contour and topography of the groove created at the impact point. Quantitative information concerining the propagation of flexural waves, the excitation of mide frequencies and the amplitude of the displacements. and stresses produced in the beam are derived from test results. The analysis of the data is based upon a resolution of the resultant forces into components nromal and tangential to the beam.