The impacts on joint structure strength of the dentiform basic parameters

such as wedge angle

blade root neck width

disc groove height

top flank angle

bottom flank angle and skew angle

were studied by lots of finite element and optimization design numerical methods.Based on the calculated results

a new model was established and verified experimentally

indicating that the maximum stress has been reduced.Results show that two-dimensional finite element analysis can be used to study the influence of dentiform basic parameters on the joint structure stress distribution

but this does not reflect changes of the stress in the axial direction.