The mass abrasion of projectile is an obvious failure phenomenon because of mass loss and nose blunting during the high-speed projectile deep penetration into concrete target. The thermal melting and cutting by aggregate on projectile outer surface are the main mechanisms of mass abrasion according to the experimental observation. In this paper, a coupled melting-cutting model is constructed to estimate mass abrasion and dynamic behavior of ogive-nose projectile during penetration. In this model, the abrasion volume of melting and cutting are obtained by two-dimensional heat conduction equation and a classic abrasive theory including a parameter that related to aggregate strength, respectively. Furthermore, the two mechanisms of mass abrasion interact with each other and are connected by the Johnson–Cook model. Finally, the penetration performance parameters, i.e., depth of penetration, variation of projectile shape and mass loss rate, can be obtained by the iteration calculation based on coupled abrasion model. The theoretical predictions agree well with the typical experimental data. Besides, the effects of the model parameters on the penetration performance are discussed.

由于高速抛射物深深渗透到混凝土靶中期间的质量损失和鼻尖变钝，抛射物的整体磨损是一个明显的破坏现象。根据实验观察，弹丸外表面的骨料的热熔和切削是整体磨损的主要机理。本文建立了一个耦合的熔体切割模型，以估计钝头弹丸在穿透过程中的质量磨损和动力学行为。在该模型中，熔融和切削的磨料体积分别通过二维热传导方程和经典磨料理论获得，其中包括与聚集强度有关的参数。此外，两种大规模磨损机理相互影响，并通过Johnson-Cook模型联系在一起。最后，通过基于耦合磨损模型的迭代计算，可以得到穿透性能参数，即穿透深度，弹丸形状的变化和质量损失率。理论预测与典型实验数据吻合良好。此外，还讨论了模型参数对渗透性能的影响。