150 橡 胶 工 业 2019年第 66卷 Analysis of Mechanical Properties of Top Cover of Tire Mold HU Haiming ,WANG Shasha (Qingdao University of Science and Technology ,Qingdao 266061,China) Abstract :Based on the stress analysis of the top cover of the tire mold under curing conditions and according to the elastic - plastic mechanics theory of thin plate ,the simplified mechanical model of top cover was estab