Cycles of sub-critical tensile and shear alternating fracturing in diminishing dimensions, under tensile loadingInternational Journal of Fracture Mechanics - - 2008
Dov Bahat, Avinoam Rabinovich, Vladimir Frid, Franz J. Brosch
A microscopic study reveals that when the curvature of striae that mark the fracture surface of PMMA glass with a chevron pattern increase beyond the critical angle, μc = 3° ± 2°, a breakdown into alternating tensile dark zones, and bright, ragged shear zones occurs. This breakdown was repeated in primary, secondary and tertiary cycles in diminishing scales. The secondary and tertiary breakdowns o...... hiện toàn bộ
Conservation laws for arbitrary objectives with application to fracture resistant designInternational Journal of Fracture Mechanics - Tập 238 - Trang 35-56 - 2022
Chung-Shuo Lee, Chun-Pei Chen, Hung-Yun Lin, Ganesh Subbarayan
In this paper, we pose a configurational optimization problem to derive the sensitivity of an arbitrary objective to arbitrary motions of one or more finite-sized heterogeneities inserted into a homogeneous domain. In the derivation, we pose an adjoint boundary value problem and utilize the adjoint fields as well as the definition of a generalized Eshelby energy-momentum tensor for arbitrary objec...... hiện toàn bộ
The unzipping model of fatigue crack growth and its application to a two-phase steelInternational Journal of Fracture Mechanics - Tập 17 - Trang 157-168 - 1981
C. Y. Yang, H. W. Liu
The unzipping analysis, based on the alternate shear deformation process of two intersecting shear planes at a crack tip, is extended to study fatigue crack growth in a two-phase martensitic-ferritic steel. The unzipping crack increment Δa
uz is directly related to ΔK and ΔJ in the case of small scale yielding. It is preferrable to use Δa
uz is directly related to ΔK and ΔJ in the case of small sc...... hiện toàn bộ
Explicit finite element modeling of static crack propagation in reinforced concreteInternational Journal of Fracture Mechanics - Tập 141 - Trang 357-372 - 2006
Rena C. Yu, Gonzalo Ruiz
We propose a methodology to model complex fracture processes in reinforced concrete beams subjected to static loading. The discrete cohesive approach, accompanied by an insertion algorithm, is adopted and a modified dynamic relaxation method is chosen as an alternative solver. The concrete matrix and steel re-bars are modeled explicitly; the connection in between is represented by means of interfa...... hiện toàn bộ