CAJ | 학술논문

实验和数模结果都揭示动态损伤演化同时依赖于应变和应变率．基于热激活机理提出了一个新的损伤演化率和一个新的断裂准则．为确定材料的损伤参数，发展了两种途径：DM—ZWT途径和BP神经网络途径．两种途径的理论预示都与实验数据很好地相一致．
실험화수모결과도게시동태손상연화동시의뢰우응변화응변솔．기우열격활궤리제출료일개신적손상연화솔화일개신적단렬준칙．위학정재료적손상삼수，발전료량충도경：DM—ZWT도경화BP신경망락도경．량충도경적이론예시도여실험수거흔호지상일치．
Both experimental and numerical results reveal that dynamic damage evolution depends on both strain and strain rate. Based on the thermal activated mechanism, a new damage evolution law and a new fracture criterion are proposed. For determining the damage parameters of material, two approaches are developed： the DM-ZWT approach and the SHPB＋BP neural network approach. The predictions by both approaches are in good agreement with the experimental data.