Every conflict can be solved by talking and making a deal around the matter at hand. Usually resolving to violence means that at least one person feels like the conflict can't be solved in its favor. Violent responses can also mean that the person is repressing negative emotions, sometimes these emotions are not even from the person that ends as a target of the violent rage.
If you find yourself unable to communicate on the right level with your partner, if your partner keeps avoiding a certain subject, or even if you find out that your partner had violent past experiences. In this case, it is best for you to be tactful and try not to provoke your partner's anger. Sometimes the most peaceful person can erupt in devastating rage if that person doesn't vent out all the daily bad feelings that life threw at him. In the end, if you can't convince your partner to visit anger therapy, maybe it will be best to end any future interactions.