[HTML][HTML] A ductile phase-field fracture formulation with regularized fracture toughness through a gradient-extended micromorphic approach

D Zhao, B Yin, J Storm, M Kaliske - Computer Methods in Applied …, 2024 - Elsevier
In this work, a phase-field formulation is proposed to describe ductile fracture in fiber-
reinforced concrete materials. By incorporating an elastoplastic bulk material formulation …

Crack path predictions in heterogeneous media by machine learning

M Worthington, HB Chew - Journal of the Mechanics and Physics of Solids, 2023 - Elsevier
The interaction between stress fields at the crack-tip and nearby microstructural
heterogeneities influences the crack path, and in turn, the effective fracture toughness of a …

Dynamic mechanical behavior of rocks containing double elliptical inclusions at various inclination angles

Z Han, S Xie, D Li, Q Zhu, Z Yan - Theoretical and Applied Fracture …, 2022 - Elsevier
Inclusions embedded in rock materials highly affect their mechanical response and fracture
behavior under external loadings. In this study, dynamic uniaxial compressive tests were …

Size Selection of Crack Front Defects: Multiple Fracture-Plane Interactions and Intrinsic Length Scales

M Wang, E Bouchbinder, J Fineberg - Physical Review Letters, 2024 - APS
Material failure is mediated by the propagation of cracks which, in realistic 3D materials,
typically involves multiple coexisting fracture planes. Multiple fracture-plane interactions …

Complexity of crack front geometry enhances toughness of brittle solids

X Wei, C Li, C McCarthy, JM Kolinski - Nature Physics, 2024 - nature.com
Brittle solids typically fail by growth and propagation of a crack from a surface flaw. This
process is modelled using linear elastic fracture mechanics, which parameterizes the …

Energetically motivated crack orientation vector for phase-field fracture with a directional split

C Steinke, J Storm, M Kaliske - International Journal of Fracture, 2022 - Springer
The realistic approximation of structural behavior in a post fracture state by the phase-field
method requires information about the spatial orientation of the crack surface at the material …

A micromorphic damage model based on a gradient extension for robust crack deformations

B Yin, D Zhao, J Storm, M Kaliske - Computer Methods in Applied …, 2022 - Elsevier
In the field of computational modeling of material failure mechanisms, a classical brittle
damage model commonly leads to an ill-posed system of equations in numerical …

Reduced stress propagation leads to increased mechanical failure resistance in auxetic materials

SM Fielding - Proceedings of the National Academy of …, 2024 - National Acad Sciences
Materials with a negative Poisson ratio have the counterintuitive property of expanding
laterally when they are stretched longitudinally. They are accordingly termed auxetic, from …

Sub-Rayleigh to supershear transition of dynamic mode-II cracks

J Zeng, J Ji, S Chen, F Tian - International Journal of Engineering Science, 2023 - Elsevier
Abstract The Sub-Rayleigh to supershear transition is commonly accepted to be governed
by the Burridge-Andrews mechanism. Such a mechanism predicts the direct nucleation of a …

Estimation of the Deformation Gradient Tensor by Particle Tracking Near a Free Boundary with Quantified Error

T Benkley, C Li, J Kolinski - Experimental Mechanics, 2023 - Springer
Background Obtaining accurate displacement measurements for large material deformation
and/or rotation presents a distinct challenge to digital image correlation (DIC) due to …