The mating force is proportional to the interference, which is very sensitive to plastic part dimensional error.
Since uncertain mating force is minimized without demanding precise interference, we expect this mechanism to provide a ready alternative to existing snap-fit assembly applications.
Regarding ring assembly, equilibrium equations of force and moment considering mating force from the hollow are shown as follows.
Illustrated simulations and experiments show that the mating force of the constant-force snap-fit is less sensitive to interference uncertainty than are typical snap-fits.
A condition is that mating and insertion force is minimum in a process of assembly.
The direction of the pulling force was carefully mated with the long axis of the bone tunnel by multidirectional inspection.
Force was Newtonian force.
Assuming again that the population is large, mating is random, evolutionary forces are absent, and Mendel's law of segregation holds, then in the offspring generation the frequency of the AiAi genotype will be pi2, and the frequency of the (unordered) AiAj genotype (i ≠ j) will be 2pipj.
The final advantage is giving optimal mating force to a ring part.
Female mate choice after mating is a strong force in sexual selection and could lead to coevolution of mating traits between the sexes.
