采用ABAQUS有限元软件对高强钢氢致滞断裂行为进行仿真模拟,进行实验研究。结果表明,基于内聚力模型对高强钢试样的氢致滞断裂滞后时间的预测结果与实验结果吻合较好,且裂纹位置发生于缺口尖端附近,此处的应力集中和H浓度均较大。同时,当H浓度到达临界值时,随着应力集中系数和载荷的不断降低,致滞断裂的滞后时间将显著增大。 ABAQUS finite element software was used to simulate the delayed fracture behavior of high-strength steel under hydrogen. The experiment was carried out. The results show that the prediction results of hydrogen retarded fracture lag time based on the cohesion model agree well with the experimental results, and the crack location occurs near the notch tip, where the stress concentration and H concentration are large. Meanwhile, when the concentration of H reaches the critical value, the lag time of delayed fracture will increase remarkably with the decrease of stress concentration factor and load.