公开(公告)号：US11798658B2

公开(公告)日：2023-10-24

申请号：US16980370

申请日：2019-10-16

Applicant: BEIJING UNIVERSITY OF TECHNOLOGY

Inventor： Xiaoyan Song ,  Hao Lu ,  Yanan Li ,  Fawei Tang

IPC: G06F30/23 ,  G16C60/00 ,  G16C10/00 ,  G16C20/80 ,  G06F111/14 ,  G06F113/26 ,  G06F111/10

CPC classification number: G16C60/00 ,  G06F30/23 ,  G16C10/00 ,  G16C20/80 ,  G06F2111/10 ,  G06F2111/14 ,  G06F2113/26

Abstract: A computer simulation analysis method suitable for describing the mechanical behavior of multiphase composites based on the real microstructure of materials relates to a multidisciplinary field such as computational material science, simulation and high throughput calculation. Through the first-principles calculation under nano scale, the molecular dynamics simulation under micro scale, and the thermodynamic calculation under mesoscopic scale, various physical parameters needed for the finite element simulation under macro scale can be obtained, including the elastic and plastic physical parameters of each phase in the composite at different temperature and different grain sizes. Focused ion beam experiment and image processing are adopted to obtain real material microstructure. Through the parameter coupling and parameter transfer among the calculated results of various scales, combining the microstructure of the material, stress-strain relationship, stress distribution and its evolution law, plastic deformation and other mechanical behaviors of the multiphase composites under complex stress and different temperature can be simulated.