A major challenge in forming polycrystalline aluminum alloy sheets is their strong plastic anisotropy, namely the flow stresses and strains depend on loading direction. This anisotropy due to of constituent crystals preferred orientations that they assume material i.e. crystallographic texture. Recently, [1] we developed a single-crystal yield criterion involves correct number coefficients such...

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With the development of plastic surgery techniques, computer aided approach has become a significant method in medical plastic surgery. In order to solve effects on surgical results made by the surface of a wound in craniofacial cosmetic surgery, accurate preoperative preparation is usually required for the surgery. This paper summarizes the application of computer aided technology in craniofac...

Ti-Co binary intermetallic compounds have attracted lots of attention due to their excellent toughness and interesting anomalous ductility. However, systematic theoretical calculations alloy properties different not been properly investigated yet. In this work, first-principles were performed study the phase stability, mechanical bonding characteristic slip five compounds. The negative enthalpy...

Cohesive-frictional soils are widely used in the construction of embankment structures and due to the method of construction, i.e. applying compactive efforts in the vertical direction in these cases, the occurrence of anisotropy in the soil strength and permeability seems to be inevitable. In this study, attempts have been made to evaluate the shear strength of c-f soils through modifying a l...

This work investigates internal damage by void growth in NT microstructures via crystal plasticity. The framework incorporates length-scale effects and explicitly models twin boundary migration. Using finite-deformation, plane strain finite element calculations of porous unit cells, we analyze the roles size, plastic anisotropy migration on evolution over a range controlled biaxial stress state...

thermomechanical control process steel produced by rolling has a significant anisotropy. the elongated grains and inclusions formed during hot rolling of ferrite and low carbon hsla steels directly influence the anisotropy of the steel’s mechanical properties as a result of microstructural anisotropy. the present research deals with this anisotropy, and particular attention has been paid to the...

The post-perovskite phase of (Mg,Fe)SiO 3 (PPv) is believed to be the main mineral phase of the Earth's D " layer (2700-2890 km depths). Its properties explain 1-6 numerous geophysical anomalies associated with this layer: e.g., the D " discontinuity 7 , its topography 8 and seismic anisotropy 9. Here, using a novel simulation technique, first-principles metadynamics, we identify a family of lo...

A large number of polycrystalline materials, both manmade and natural, display preferred orientation of crystallites. Such alignment has a profound effect on anisotropy of physical properties. Preferred orientation or texture forms during growth or deformation and is modified during recrystallization or phase transformations and theories exist to predict its origin. Different methods are applie...