Work

Dynamic fracture in DCB specimen loaded by end moments

Year: 2025

Type: article

Abstract: Dynamic fracture depends on a delicate interplay of the dynamic Energy Release Rate (ERR) G d which is the static value G s as reduced by inertia terms depending on crack speed and sometimes acceleration, and the dynamic toughness Γ d which generally varies with crack speed. We review some basic results on Double Cantilever Beam specimen, and make a simple analysis of a DCB under remote bending loads applied slowly. We comment that smooth propagation ensues here contrary to the case discussed in the literature where the loading the end by a constant displacement rate, a very complex non-linearly oscillating velocity results, possibly leading to crack arrest (stick–slip) and which is only partly captured by present models, making difficult the determination of the dynamic toughness. • Dynamic fracture interplay of the dynamic Energy Release Rate (ERR) and dynamic toughness. • Analysis of a DCB under remote bending loads applied slowly. • Smooth transient propagation ensues. • The model a simple illustration of transient dynamic fracture.

Source: Engineering Fracture Mechanics

DOI: 10.1016/j.engfracmech.2025.111055

Author: M. Ciavarella

Institutions: Polytechnic University of Bari, Hamburg University of Technology

Language: English

Topic: Fatigue and fracture mechanics

Subfield: Mechanics of Materials

Field: Engineering

Domain: Physical Sciences

Open Access status: hybrid

Estimated APC paid: $4,120

Funders: University of Michigan, Ministero dell’Istruzione, dell’Università e della Ricerca