Complicated model complete hexahedron modeling and geometry remodeling and encryption method

Abstract

The invention discloses a complicated model complete hexahedron modeling and geometry remodeling and encryption method. The method includes: calculating geometry models required being built primarily according to models, and dividing the built geometry models according to hexahedron units; simply dividing grids, and then dividing transition units (pentahedron units) into hexahedron units; using a self-programmed grid-geometry conversion program to build all hexahedron units into brand new geometries according to a manner that nodes correspond to peaks of geometries, and performing local control encryption. By the method, a complete hexahedron network can be built fast, the local encryption density can be controlled optionally, precondition for performing large-scale scientific calculation is provided, and the build models are also suitable for other numerical methods.

Description

technical field [0001] The invention belongs to the field of finite element modeling, and in particular relates to a complex model complete hexahedron modeling and geometry remodeling encryption method. Background technique [0002] In the finite element calculation and analysis of geotechnical engineering, establishing a calculation model that can reflect the actual geology, terrain conditions and rock mass structure is the key to the reliability of the calculation results. In the actual modeling process, some simplifications are often artificially performed. Sometimes the established model is only a small part of the research problem, which cannot reflect the overall situation of the research target, and even the calculation model is seriously inconsistent with the geological reality, which greatly reduces the reliability of the calculation results. Therefore, in order to eliminate these non-calculation-induced error factors, it is necessary to establish a sufficiently la...

AI Technical Summary

Problems solved by technology

2D triangular elements and 3D tetrahedral elements have sub-optimal accuracy and poor display results

At this stage, the automatic generation of hexahedral grids has not been solved in a real sense. It is very difficult to use full hexahedral grids to construct three-dimensional complex shapes, and it needs to be done manually.

Therefore, the workload of finite element mesh division is heavy and cumbersome, and it has become the main "bottleneck" of finite element calculation.

Images