采用边界元素法,对Ⅰ型裂纹试样内氢的扩散过程进行了数值模拟,给出了裂尖附近氢聚集过程及氢浓度分布随时间变化的定量关系,并且探讨了载荷对裂纹前缘氢浓度分布的影响.文中还与有关的试验现象和结果进行了比较与讨论,进一步探讨了金属的氢致裂纹扩展机制. The boundary element method was used to simulate the hydrogen diffusion in the type Ⅰ crack specimen. The quantitative relationship between the hydrogen accumulation process and the hydrogen concentration distribution over time was also given. The influence of the load on the crack front hydrogen The concentration distribution of the impact of the paper is also related to the test results and the results were compared and discussed further discussed the metal hydrogen crack growth mechanism.