We investigate the role of microstructural bridging on fracture toughness composite materials. To achieve this, a new computational framework is presented that integrates phase field and cohesive zone models to simulate fibre breakage, matrix cracking fibre–matrix debonding. The microstructure represented by an embedded cell at vicinity crack tip, whilst rest sample modelled as anisotropic elas...

[1] Lithospheric shear localization, as occurs in the formation of tectonic plate boundaries, is often associated with diminished grain size (e.g., mylonites). Grain size reduction is typically attributed to dynamic recrystallization; however, theoretical models of shear localization arising from this hypothesis are problematic because (1) they require the simultaneous action of two creep mecha...

Abstract An elastic–plastic constitutive model considering particle breakage for simulation of crushable granular soils behavior is proposed. In the model, elastic strain rates are derived from a modified Helmholtz free energy function, and influence plastic shear work-induced on properties sand taken into account as an coupling mechanism. A stress ratio-driven mechanism employed calculation ra...

The first stage in the preparation of rice for food is the threshing of the harvested crop to yield paddy rice. This consists of the rice berry (or grain) enclosed in a rough, fibrous and silicious husk. Further preparation consists of hulling to remove this husk, followed by milling which removes the outer bran layer of the berry. For some time before beriberi was shown to result from a defici...

In the recent past, extensive studies were performed on nanoscale materials. In particular, bismuth nanowires attracted large interest because of their extraordinary properties and possible application in thermoelectric devices. Regarding future implementations, the maximal current density jmax nanowires are able to carry is an important aspect. High current densities can cause voids in the wir...

european corn borer, ostrinia nubilalis hb. is a polyphagous insect, recognizing world widely as the predominant pest of maize. in this research the relative resistance of eleven hybrids of maize was evaluated in a field in agricultural and natural resources research center of moghan. this experiment was conducted in three replicates in a complete randomized block design. for comparison of the ...

High-porosity granular rocks are moisture-sensitive solids, in that their strength and deformability modulated by the relative humidity of environment. Here, a novel continuum breakage–damage framework is developed to characterize simulate inelasticity cemented materials subjected changes humidity. A microstructural model proposed describe evolution solid–fluid interfaces emerging from grain br...

The fluidised bed drying characteristics of soybeans at high temperatures (110-140 degrees C) and moisture contents, 31-49% dry basis, were modelled using drying equations from the literature. Air speeds of 2.4-4.1 m/s and bed depths from 10 to 15 cm were used. The minimum fluidised bed velocity was 1.9 m/s. From a quality point of view, fluidised bed drying was found to reduce the level of ure...

Cereal Chem. 79(3):383–386 The objective of this study was to compare the structure and properties of flours and starches from whole, broken, and yellowed rice kernels that were broken or discolored in the laboratory. Physicochemical properties including pasting, gelling, thermal properties, and X-ray diffraction patterns were determined. Structure was elucidated using high-performance sizeexcl...

The evolution of frictional strength during stick-slip dynamics a fault system is key to understanding earthquake nucleation and rupture patterns. In mature faults, granular gouge produced by wear, comminution or fragmentation tectonic movements. this work, we introduce model in the simulation sheared explore influence grain breakage on dynamics. With highly stressed particles, increases accomp...