Adaptive Arithmetic of Rock and Concrete’s Crack Propagation

Abstract:

A numerical implement to simulate the crack propagating process in arch dam and rock base has been put forward. A new remeshing strategy of FEM meshing grid was presented for improving the calculation accuracy and efficiency. In the period of dividing the dam structure and the foundation rock into an appropriate number of discrete subregion (finite elements), the adaptive element was used to divide the original 3-D element into 8 son-elements analogical to its father-elements entirely. Of course the 2-D element was divided into 4 son-elements analogical to its father-elements entirely using the same method. The element shape function was used to solve suspend nodal point. The arithmetic and shape function’s formulation also were put forward. To satisfy the engineering accurate result, the adaptive element was used to divide the son-element or the grandson-element again. In the calculating processor, the arithmetic of adaptive load step was presented. Only one element failures in a load step. So the cracking processor can be found with automatic mesh generation. An arch dam has been as example to validate the method is right and stability. The arithmetic has important theory and utility value.

• Periodical: Advanced Materials Research (Volume 702)
• Pages: 7-10
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.702.7
• Online since: May 2013
• Authors: Rui Gao, Ling Qiang Yang, Xiang Dong Wang
• Keywords: Arithmetic, Concrete, Crack, Rock

References

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