Torsional vibration of a shaft with a circumferential crack

摘要: Abstract The influence of a circumferential crack upon the torsional dynamic behavior shaft is studied. Introduction such results in lower natural frequencies due to added flexibility. strain energy release function related compliance cracked shaft, that local flexibility introduction crack. This stress intensity factor which for torsion with has known expression. As result, presence been computed. result can be further utilized yield response complex geometry. frequency expected decrease increasing depth. To establish function, continuous was analyzed. fundamental showed strong dependence on smaller as order increases. Experimental are close agreement analysis. show change high enough allow detection and estimation its location or magnitude.