Solution capabilities for twoand three-dimensional nonlinear finite element analysis of concrete structures are presented. The concrete material is modeled including the triaxial nonlinear stress-strain behavior, tensile cracking, axon-stiff~~g, compression crushing and str~n-sof~ng. The results of various sample analyses are given to demonstrate the constitutive model and the solution strategi...

Two case studies are summarized using anisotropic plasticity and the Weibull weakest link failure model to predict the behavior of wood and wood composites. The linear elastic orthotropic model normally used for wood is shown to be insufficient for the prediction of ultimate strength in wood. Non-linear, non-recoverable behavior in compression in each of the orthogonal material directions is of...

Abstract Aiming at target steel car bumper new lightweight design, with a vehicle static crushing, three pressure and impact test simulation analysis based on the performance parameters, design targets aluminum alloy box, section size of anticollision beam energy absorption materials they need to determine performance. The three-point method is used optimize anti-collision beam. Because loading...

Numerous industries involve impact crushing of raw material in their processes. Crushing is performed by interaction between raw material witch size is reduced during this process and equipment or parts that crush. Some of the biggest and most important clients of crushing and milling equipment are industries like cement plants, mines, open pits, coal fired thermal plants, recycling and shreddi...

It is necessary to reduce the weight of components while maintaining or improving their mechanical properties withstand dynamic loads in lightweight structures. In this study, heat treatment and a trigger mechanism were implemented for thin-walled tube aluminium increase energy absorption reducing peak crushing force. Different geometries locations proposed deformation controlled manner, combin...

Two types of crushing were applied to grains of red sorghum: manual crushing using a mortar and pestle of kitchen and mechanical crushing using a hammer mill. The flours obtained at the end of these various crushing were filtered and subdivided in different fractions according to the diameters of the mesh of the sieves (0.16mm; 0.25mm; 0.315mm; 0.4mm, and 0.63mm...). Some physical, chemical and...

Abstract During installation of driven or jacked piles in sand, particle crushing occurs a region below the base these piles. Quantification degree and extent during driving jacking sand is necessary to improve current design methods. To study effects on capacity uniform silica samples, model pile was tested half-cylindrical calibration chamber with transparent observation windows its front wal...

The structure and mechanical behavior of Toco Toucan (Ramphastos toco) and Wreathed Hornbill (Rhyticeros undulatus) beaks were compared. The beak of both species is a sandwich-structured composite, having an exterior, or rhamphotheca, consisting of multiple layers of keratin scales and a core composed of a fibrous network of bony closed-cell foam. The rhamphotheca is an arrangement of approxima...