I agree with little_rose, there's no use in forcing your wife to submit - she either likes it or not.

My advice would be to talk to her about your desires, maybe share a few light fantasies and see whether she responds to them...or even trying a few more mainstream BDSM things, like holding her down during sex, getting her all hot and bothered and then teasing her for a while...anything that makes her feel good and beg for more. Find out what she truely likes and see how you can use that for kinky play...

But force? You'd probably destroy more than you achieve with that...especially the trust she has in you. And once that trust is damaged you won't get anywhere and above all risk losing her completely.

Just my thoughts.