Table 3 The relative displacement of the head and shaft fragments in 4 models

20N axial compression

0.317 mm

0.248 mm

0.163 mm

0.123 mm

50N axial compression

0.675 mm

0.562 mm

0.388 mm

0.263 mm

1 N∙m torsion moments

0.126 mm

0.081 mm

0.108 mm

0.033 mm

1 N∙m lateral bending moments

0.154 mm

0.088 mm

0.414 mm

0.318 mm

1 N∙m extension bending moments

0.475 mm

0.346 mm

0.135 mm

0.065 mm