公开(公告)号：US20230325560A1

公开(公告)日：2023-10-12

申请号：US18024780

申请日：2022-06-22

Applicant: DALIAN UNIVERSITY OF TECHNOLOGY

Inventor： Fei HAN ,  Zhibin LI

IPC: G06F30/23

CPC classification number: G06F30/23 ,  G06F2119/02

Abstract: A peridynamics-based finite element method (PeriFEM) for an structural damage analysis, comprising the following steps: A1: generating finite elements of a structure, A2: generating peridynamic elements based on the finite elements; A3: calculating a global load vector; A4: calculating a global stiffness matrix; A5: formulating and solving a linear algebra equation about the global node displacement vector; A6: evaluating whether the result satisfies the convergence criteria; if so, go to step A7, if not, return to step A4; A7: increasing the external load successively and loop A3-A7 after that, until the external load exceeds the maximum external load; A8: plotting the results. The implementation of PeriFEM in software includes the following operations: B1: generating the peridynamic elements for inputting into the software; B2: programing the formulation of the element stiffness matrix in step A4 as a subroutine; and B3: setting a method for the updating the subroutine.