tensile fracture shear fracture bearing failure (insufficient number (necessary to reinforce (insufficient thickness) ofo°plies) ±45°plies) tensile and normal fracture fracture of bolt bolt lifting Figure 6.4 Different Types of Bolt Joint Failures Condition of nonbearing pressure:In Figure 6.7,F and T designate the normal and shear loads respectively,that are applied on the assembly over a width equal to one pitch distance. The equivalent bearing pressure which leads to the crushing of the wall of the hole of diameter is F/(x e).It must remain smaller than an admissible maximum,as: F admistble bearing pressure carbon:admistble bearing 500 MPa glass:Tadmistble bearng =300 MPa 2003 by CRC Press LLC Condition of nonbearing pressure: In Figure 6.7, F and T designate the normal and shear loads respectively, that are applied on the assembly over a width equal to one pitch distance. The equivalent bearing pressure which leads to the crushing of the wall of the hole of diameter Ø, is F/(Ø ¥ e). It must remain smaller than an admissible maximum, as: Figure 6.4 Different Types of Bolt Joint Failures F fe -----£sadmissible bearing pressure carbon: sadmissible bearing = 500 MPa glass: tadmissible bearing = 300 MPa © 2003 by CRC Press LLC