Abstract: The waviness is found commonly in surface morphology of joints. In this paper the behaviors of joint closure model, considering waviness , are analysed. The deformation mechanism and closure behaviors of this kind of joints are discussed. The effects of irregularity variance, amplitude and frequecy of waviness on closure behaviors of joints are studied. Finally the joint closure model,considering waviness, is compared with previous models which considered waviness as random irregularities of joint morphology.