Study on Inverse Method of Soil Elastic Modulus Based on Multi-material ALE Fluid-structure Interaction

2017 2nd International Conference on Advanced Materials Research and Manufacturing Technologies

材料科学;机械制造

Yang, Wang^1,2 ; Dang, Xinkai^1 ; Yang, Jian^1,2 ; Mo, Jianlin^3

College of Mechanical Engineering, Guangxi University, Nanning

530004, China^1

Collaborative Innovation Center for Sugar Industry of Guangxi, Nanning

530004, China^2

Guangxi Research Institute of Agricultural Machinery, Nanning

530001, China^3

关键词: Air soils;    Arbitrary Lagrangian Eulerian;    Inverse methods;    Multi materials;    Physical tests;    Surface soil;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/229/1/012039/pdf
DOI  :  10.1088/1757-899X/229/1/012039

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

Because sampling the surface soil appears loose and fracture of soil easily, the elastic modulus of the soil in the tillage layer was difficulty in measuring directly by physical tests. The dynamic simulation model of the cone-air-soil system was established. The multi-material ALE (Arbitrary Lagrangian-Eulerian) fluid-structure interaction method was used in the model. Based on the model, the elastic modulus of the soil was reversed. Meanwhile, the reverse elastic modulus was physically verified by the triaxial test. The results show that the inverse method is feasible. The error is 0.65% compared with the soil elastic modulus obtained by triaxial test. The numerical simulation model of cone-air-soil system has higher precision.