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中文摘要：
为解决软固结气压砂轮不同成分组成的粘磨层（粘结剂与磨粒混合层）性能参数需经实验一一测量获得的问题,将离散元方法（DEM）应用于软固结气压砂轮光整加工领域中,采用离散元软件PFC2D建立了粘磨层模型,以圆形颗粒模拟磨粒和粘结剂,从微观角度开展了对粘磨层的力学性能的分析,提出了对粘磨层模型进行数值模拟双轴实验测量其劲度模量的方法,建立了磨粒粒度和粘磨层劲度模量之间的关系,根据测量结果与实验结果的相近程度对其可行性进行了评价,进行了粘磨层直接拉伸实验.实验及研究结果表明,仿真结果与实验结果误差在10％以内,验证了离散元方法（DEM）在该领域应用的可行性,同时该结果为利用离散元软件PFC3D软件进一步模拟软固结气压砂轮光整加工过程奠定了基础.
英文摘要：
In order to solve the problem that the abrasives layers of soft consolidation pneumatic wheel which consist of different material must be experimented one by one to get the properties,the application of discrete element method（DEM） in this domain was investigated for the first time,the model of the abrasives layer was established using the DEM software PFC2D.The abrasives and binder were simulated by circles,the mechanical properties of the abrasives layer was analyzed from microcosmic perspectives,a method was presented to measure the elastic modulus of the abrasives layer through the biaxial experiments.The relationship between the radius of grain and the elastic modulus was established,the feasibility was evaluated by contrasting the result of simulation with the result of tensile experiments.The experimental results show that the error is less than 10％ and proved the feasibility of DEM on soft consolidation pneumatic wheel finishing process,laid the foundation of the usage of PFC3D on finishing process.
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