...Markus J. Buehler Dynamic fracture is an important area of materials analysis, assessing the atomic-level mechanisms by which materials fail over time. Here, we focus on brittle materials failure and show that an atomistically derived progressive transformer diffusion machine learning model can...

... this challenge. However, the effect of fiber geometry on the fracture and fatigue of composite hydrogels is still elusive. Here, we use a model composite hydrogel to study the influence of fiber width, fiber spacing, and fiber configuration on these properties. It is found that the toughness of the composite...

... space Histogram of granular material percentage at 15 μs after impact based on 500 samples in the input parameter space The linear correlation coefficients between GMP and each of the 19 derived input parameters shown in Table 8 are calculated and reported in Table 12 . Fracture toughness...

... of force length, ductile response occurs similar to a linear “spring” interface. Both behaviors ultimately give rise to the failure of the interface. Results for the stiff, strong interface under a small applied torque show excellent agreement with the static fracture mechanics solution of Benthem...

... in brittle solids [ 1 – 3 ]. In tape or film peeling, often studied as a model system for fracture, a bending stiffness heterogeneity has a similar effect in influencing the force required to advance the peel front [ 4 – 7 ]. Kendall [ 4 ] studied the peeling of a tape with alternating thickness under...

... and fracture toughness of the system. We also demonstrate how the failure mode may switch between edge crack propagation and inner crack nucleation depending on the geometric characteristics of the bulk in the vicinity of the interface. Numerically, we investigate using the finite element method two different...

... that the deformation around a crack tip is usually large and the application of the linear formulation is, thus, limited to the region beyond a small distance away from the crack tip, assuming a small-scale nonlinear region similar to the small-scale yielding condition in linear elastic fracture mechanics. A detailed...

... with the one in fractures. Matrix and fracture pore pressures are calculated to be 1.77 MPa and 0 MPa, respectively. After the application of a compressive axial load to increase the axial strain at a constant rate, both matrix and fracture pore pressures start to increase. Meanwhile, water is driven out from...

...Pengyu Pei; Yan Shi; Guang Yang; Cunfa Gao This paper presents a detailed study on the fracture behaviors of soft materials with hard inclusion. Stress concentrations on the interfaces of hard and soft materials are considered as the key factor for structure fracture. Based on linear fracture...

... modeling Flow Mechanical properties of materials Plasticity Materials Fracture Tvergaard and Hutchinson [ 10 ] also considered the role of isotropic strain hardening on the R -curve. In this case, the stress field ahead of the crack tip exceeds 3 σ 0 due to the presence of strain...

... deformation regime. We investigate the stepwise phenomenon in air and in water, respectively, under mode I fracture. Our simulations show that despite the homogeneous material properties, the crack growth under mode I fracture is stepwise, and this pattern is influenced by the hydraulic permeability...

...Erfan Sarvaramini; Maurice B. Dusseault; Robert Gracie Microseismic imaging of the hydraulic fracturing operation in the naturally fractured rocks confirms the existence of a stimulated volume (SV) of enhanced permeability. The simulation and characterization of the SV evolution is uniquely...

...B. Chen; Andrew R. Barron; D. R. J. Owen; Chen-Feng Li Based on the KGD scheme, this paper investigates, with both analytical and numerical approaches, the propagation of a hydraulic fracture with a fluid lag in permeable rock. On the analytical aspect, the general form of normalized governing...

...Yunwei Mao; Lallit Anand If an elastomeric material is subjected to sufficiently large deformations, it eventually fractures. There are two typical micromechanisms of failure in such materials: chain scission and crosslink failure. The chain scission failure mode is mainly observed in polymers...

...: Shaoxing Qu. 08 03 2018 17 04 2018 Constitutive modeling Elasticity Flow Materials Fracture Rubber bearings are widely used in structural engineering yet the problem of their design is not completely resolved [ 1 ]. Among the difficulties, there is a necessity...

... Fracture In analyzing a typical industrial sheet metal forming process using macroscopic rate-independent plasticity, an anisotropic yield function plays an essential role in accurately capturing the directional and multiaxial dependence of the yielding, plastic flow, and hardening behavior...

...C. Liu Through the analysis of a model problem, a thin elastic plate bonded to an elastic foundation, we address several issues related to the miniature bulge test for measuring the energy-release rate associated with the interfacial fracture of a bimaterial system, where one of the constituents...

...Zhi-Qiao Wang; Emmanuel Detournay This paper investigates the tip region of a hydraulic fracture propagating near a free-surface via the related problem of the steady fluid-driven peeling of a thin elastic layer from a rigid substrate. The solution of this problem requires accounting...

.... , 34 ( 6 ), pp. 2478 – 2487 . 10.1109/TPS.2006.876421 [24] Naït-Abdelaziz , M. , Zaïri , F. , Qu , Z. , Hamdi , A. , and Hocine , N. A. , 2012 , “ J Integral as a Fracture Criterion of Rubber-Like Materials Using the Intrinsic Defect Concept ,” Mech. Mater. , 53 , pp. 80...

... 07 12 2017 Flow Hydraulics Internal flow Stress analysis Fracture Fluid-driven cracks under symmetrical pressure and shear stress on the crack surfaces are observed in various fluid–solid interaction problems, such as magma (or water) driven cracks in the earth crust (or glacier...