Abstract：The joint effi ciency of gap joining of composite material structure is infl uenced because the permissible strain of composite material can not display completely, although composite material has been widely used in the key structure of aircraft. As a result, the interference joining fastening system is used in composite structures in order to improve the state of stress ,the stress concentration factor at the round of hole. The pin load distribution and load-carrying ability of composite material structure are raised by using the interference joining fastening system.
2011, 
