The elementary behaviour of granular materials strongly depends on microstructural and geometrical changes from grain crushing. This paper proposes a 2D discrete element numerical model for the investigation of brittle granular crushing in confined uniaxial compression conditions. While our analysis adopts the well established strategy of replacing pre-crushed particles by post-fractured fragme...

ÐA functionally graded composite is prepared and the spatial gradation of Young's modulus in the functionally graded material (FGM) is measured. Elastic modulus gradients occur over length scales suitable for experimental mechanics investigations using optical interferometry. Crack tip ®elds are mapped in the FGM under quasi-static loading conditions with cracks oriented perpendicular to the di...

Free vibration and buckling of three-phase bidirectional functionally graded sandwich (BFGSW) plates are studied in this paper for the first time by using an efficient nine-node quadrilateral (Q9) element. The core is pure ceramic, while two skin layers a material. element derived on basis Mindlin plate theory linked interpolations. Fundamental frequencies loads computed with various boundary c...

numerical modeling of machining processes is of significance in the parametric analysis and optimization of their performance. in this paper, a finite element-based model of abrasive waterjet (awj) cutting of a ductile material is presented with the help of an explicit, nonlinear finite element method. in this model, both solid-solid interaction and fluid-structure interaction are considered. t...

In this article, we analyze the effect of transverse cracks on natural frequencies a Euler-Bernoulli functional gradient beam. The studied beam was discretized into finite elements and global matrices motion equation are determined by applying Lagrange to kinetic deformation energies. material properties considered vary in directions thickness, gradation is described power-law distribution, sti...

the main limiting factors in saline-sodic soils are high amounts of salts, low soil organic matter (som) and lowavailability of macro and micro-nutrients. the effect of different amounts of nano iron oxide powder and urban solidwaste compost coated sulfur (uswcs) on the chemical properties of a saline-sodic soil was investigated. the experimentwas conducted using a randomized complete block des...

Mixed-mode dynamic crack growth behavior in a compositionally graded particle filled polymer is studied experimentally and computationally. Beams with single edge cracks initially aligned in the direction of the compositional gradient and subjected to one-point eccentric impact loading are examined. Optical interferometry along with high-speed photography is used to measure surface deformations...