News



New Publication on Peridynamic Analysis of Dynamic Fracture


A new Open Access paper with the title "Peridynamic analysis of dynamic fracture: influence of peridynamic horizon, dimensionality and specimen size" has been published in the international journal „Computational Mechanics".

Abstract:
In peridynamic models for fracture, the dissipated fracture energy is regularized over a non-local region denoted as the peridynamic horizon. This paper investigates the influence of this parameter on the dynamic fracture process in brittle solids, using two as well as three dimensional simulations of dynamic fracture propagation in a notched plate for two loading cases. The predicted crack speed for the various scenarios of the initially stored energy, also known as the velocity toughening behavior as well as characteristics of the crack surface topology obtained in different crack propagation regimes in 3D computational simulations are compared with the experimentally observed crack velocity and fracture surfaces for Polymethyl Methacrylate (PMMA) specimens. In addition, we investigate the influence of the specimen size on the dynamic fracture process using two dimensional peridynamic simulations. The fracture strengths and the velocity toughening relationship obtained from different specimen sizes are compared with the Linear Elastic Fracture Mechanics (LEFM) size effect relationship and with results from experiments, respectively.


Link to the Open Access article - DOI: https://doi.org/10.1007/s00466-021-02017-1

Butt-Meschke2021_Article_PeridynamicAnalysisOfDynamicFr.pdf

Our FEM course in the Summer Semester 2024...

The introduction of all our FEM courses took place on Wednesday, April 3rd, 2024.

For everyone wh

more...

Prof. Roger Sauer - Herzlich willkommen!...

Seit dem 01.04.2024 ist Prof. Dr. Roger A. Sauer neuer Inhaber des Lehrstuhls für Statik und Dynami

more...
MORE NEWS