Research on a new remeshing method for the 3D FEM simulation of blade forging

摘要: Abstract A aeronautical blade is one of the most important mechanical components in aviation industry. manufactured by forging required to achieve high precision shape and have good properties. However, has a complicated shape: there twist its from root end, body thin uneven at different positions. Obviously, process three-dimensional nature but, until now, deformation analyses been made as two-dimensional plane-strain problems. To obtain more realistic deformed configuration precise information about for die design manufacturing, it necessary simulate blade-forging using finite-element method (3D FEM). Not only practical nature, but also usually large simulation carried out increment method. These cause FEM mesh be distorted such degree that new further simulation. There another potential problem constantly changing body. The solutions these problems depend on proper remeshing scheme being incorporated into One techniques how generate automatically. Based features forging, contracting boundary interior proposed, series procedures key realizing are analyzed given. characteristic feasible remesh this because based parts. By method, possible both 3D after degeneracy an initial parts blades, 2D mesh, not like with modular remeshing, which suitable meshing. In addition, simple easy without constructing specific modules joining them.