A method for transferring a stress state (stress tensor) of a FE simulation result to a new FE mesh geometry of a modeled design system in a simulation chain of production operations

摘要

The invention relates to a method for transferring a stress state of an FE simulation result to a new FE mesh geometry of a simulated construction system such as a 3D-forming component for motor vehicles in a simulation chain of production operations, comprising: a) providing a first data set (D1 ) which describes the FE simulation result with stress state of the FE simulation (FE-N1) of the construction system or component (1) of a first production process, b) creation of the new FE mesh geometry (FE-N2) of the simulated construction system resp Component (1), which is assigned to a second production process, c) Transferring the Spanungszustandes of the provided first data set (D1) on the new FE mesh geometry (FE-N2) of the construction system or component (1), d) implementation an equilibrium calculation (R) using the stress tensor (S1) in the FE mesh geometry FE-N2, with a deformation yield of the design system or component (1) which differs from the deformation in the FE mesh FE-N1 by a deformation u tolerance value ε, and e) iterative repetition of the equilibrium calculation (R) as cyclic equilibrium iteration in the new FE Net geometry (FE-N2) (in the new target FE mesh) of the construction system or component (1), wherein in each cycle a respective new state of stress on the FE mesh geometry (FE-N2) of the construction system or Component (1) is applied while stress fractions, which lead to undesirable deformations u, degraded until a shift / Abbruchkriterium: deformation u tolerance value ε is achieved. f) Display of the fulfilled condition: u ε.