By combining with contact and impact dynamic theories

the development about rub-impact between the rotating blade and casing was summarized.Different blade-casing rub-impact models were discussed emphatically and researches of the blade-casing rub-impact model were divided into five types:normal rub-impact model based on the collision energy conservation

smearing and abradable blade-casing rub interface models

continuous elastic collision force model

pulse force local rub-impact model

rub-impact model based on contact dynamics.The defects and proper scopes of these five types of models were pointed out by comparing with one another and the experiments on blade-casing rub-impact were also introduced.Finally

new research directions about the blade-casing rub-impact models were suggested:establishment of detailed normal and tangential rub-impact models including the influence of multiple parameters

collision process simulation based on contact theory

revision of existing rub-impact models by the experiment data.