Accelerated and Stabilized Meshfree Method for Impact-Blast Modeling
Start Page
92
End Page
104
ISBN (of the container)
9780784482896
Date Issued
2020
Author(s)
Abstract
Meshfree methods such as the reproducing kernel particle method (RKPM) are well suited for modeling materials and solids undergoing fracture and damage processes, and nodal integration is a natural choice for modeling this class of problems. However, nodal integration suffers from spatial instability, and the excessive material deformation and damage process could also lead to kernel instability in RKPM. This paper reviews the recent advances in nodal integration for meshfree methods that are stable, accurate, and with optimal convergence. A variationally consistent integration (VCI) is introduced to allow correction of low order quadrature rules to achieve optimal convergence, and several stabilization techniques for nodal integration are employed. The application of the stabilized RKPM with nodal integration for shock modeling, fracture to damage multiscale mechanics, and materials modeling in extreme events, are demonstrated. These include the modeling of man-made disasters such as fragment-impact processes, penetration, shock, and blast events will be presented to demonstrate the effectiveness of the new developments.
Event(s)
Structures Congress 2020
Subjects
Consistent Integrations
Fracture And Damages
Man-made Disasters
Material Deformation
Multi-scale Mechanics
Optimal Convergence
Reproducing Kernel Particle Method
Stabilization Techniques
Integration
Publisher
American Society of Civil Engineers (ASCE) onlinejls@asce.org 1801 Alexander Bell DriveGEO Reston VA 20191 Alabama
Description
Structures Congress 2020. St. Louis; MO. Conference code: 158753
Type
conference paper