The stern shaft of a ship is the transmission shaft that outputs power and drives the propellers.Hol-low design and manufacture can achieve a low weight of the stern shaft.This paper takes the hollow stern shaft of a ship as the analysis object.It analyzes the influence of different hollow coefficients on the strength and impact resis-tance of the stern shaft under the conditions of static load,dynamic load and shock load,to reveal the relationship between the hollow coefficient and the performance of the stern shaft,and provide a basis for determining the hollow coefficient during the design of the hollow stern shaft.The results show that after considering the lightweight,strength and impact resistance on the stern shaft,the hollow coefficient in the range of 0.55~0.65 can ensure good working performance.
stern shaft of a shiphollow coefficientlightweight designstrength analysisimpact resistance