Computer modelling of main MDFB formation mechanisms in compound engineering materials with multilevel damaging architecture from kinetics of plastic deformation and microfracture carriers
Abstract
An original computational strategy is given for through-coupled modeling of the macroscopic deformation-fracture behavior (MDFB) formation processes in deformable solids and structures with true compound (multilevel) architecture. The multiphase metallic composite is a typical object of investigation. The hierarchical multilevel model of such material is presented. It consists of three principal material structural levels nested one into another and interacting with each of the others. A general method of initial full problem structural decomposition is created, and a principle of the computer-oriented constitutive equation construction (CEC) for each level's true microstructure is developed. On the basis of the computational strategy produced the CEC for metallic unidirectional fiber-reinforced composite is performed, and the influence of some third and second level microstructure characteristics on the MDFB of effective (homogenized) material is investigated by through-coupled modeling.
- Publication:
-
Computers and Structures
- Pub Date:
- July 1992
- Bibcode:
- 1992CoStr..44...29I
- Keywords:
-
- Computerized Simulation;
- Fracture Mechanics;
- Macroscopic Equations;
- Mechanical Engineering;
- Plastic Deformation;
- Strain Distribution;
- Constitutive Equations;
- Fiber Composites;
- Fiber Orientation;
- Solid Mechanics;
- Structural Mechanics