基于ABAQUS的边坡降雨入渗边界的开发及其验证

为了克服ABAQUS在进行降雨入渗模拟方面的局限性,采用Python语言对ABAQUS软件的降雨入渗边界进行二次开发,将降雨边界作为不定边界,采用迭代算法对降雨入渗边界进行处理,开发出基于ABAQUS软件的降雨模块。该模块可以根据降雨强度与土壤入渗能力之间的关系,即时改变降雨边界条件,从而准确的反映降雨过程中降雨边界的动态变化过程,这克服了ABAQUS软件中只能模拟降雨全部入渗,入渗率保持不变的单一情况,完善了ABAQUS软件的降雨入渗分析功能。结果表明:开发出的降雨模块是稳定可靠的,可以用于边坡降雨入渗的分析;同时,借助于ABAQUS的强大功能,该模块可以为以后进行更复杂的降雨相关问题的研究提供一个良好的研究平台。

Development and verification of boundary of slope rainfall infiltration based on ABAQUS

In order to overcome the limitation of ABAQUS in simulation of rainfall infiltration, the paper used Python language to develop the rainfall infiltration boundary of ABAQUS software secondary.It considered the rainfall boundary as an uncertain boundary, used the iterative algorithm to treat the boundary,and developed rainfall modulus. The modulus can change instantaneously rainfall boundary conditions according to the relation between rainfall intensity and infiltration capacity of soil,and thereby reflects the dynamic changing process of the boundary condition in rainfall process,and overcomes the unchanged infiltration rate adopted in ABAQUS, thus improves the analysis function of rainfall infiltration by use of ABAQUS.The results show that the developed rainfall modulus is reasonable can be used in analysis of slope rainfall infiltration; meanwhile, by the aid of the powerful feature of ABAQUS, this modulus can provide a good research platform for more complicated rainfall problems in the future.