Current corn kernel-cob bonding mechanics models (LSD models) uniformly consider the force changes during maize threshing operation as an elastic change, resulting in computational errors of up to 10% or more discrete element simulations. Due inability perform high-precision simulation characteristics operation, core operating parameters thresher (rotation speed component) rely mainly on empiri...

the development of yielded or failure zone due to an engineering construction is a subject of study in different disciplines. in petroleum engineering, depletion from and injection of gas into a porous rock can cause development of a yield zone around the reservoir. studying this phenomenon requires elasto-plastic analysis of geomaterial, in this case the porous rocks. in this study, which is a...

In linear elastic fracture mechanics the stress and strain magnification at crack tip is characterized by intensity factors which have been obtained for a large variety of loading specimen geometries course mode II test included. this paper not only different kinds boundary conditions contact surfaces will be discussed but plastic one. The rotation center line also discussed. results show power...

A CT-based method ("HipMotion") for the noninvasive three-dimensional assessment of femoroacetabular impingement (FAI) was developed, validated, and applied in a clinical pilot study. The method allows for the anatomically based calculation of hip range of motion (ROM), the exact location of the impingement zone, and the simulation of quantified surgical maneuvers for FAI. The accuracy of HipMo...

OBJECTIVE To review the indications for, surgical techniques of, and results of vertical lobule division (VLD) of the alar cartilages. DESIGN Prospective study of patients assigned to undergo variations of VLD of the lower lateral cartilages. SETTING Private facial plastic surgery practice in a major university teaching hospital. PATIENTS Twenty-four patients who underwent variations of V...

Polycrystalline microstructure often plays an important role in determining the macroscopic behavior of metals. This work is motivated by the case of a spin-formed shaped charge liner. When these liners are compressed and inverted by detonation of an explosive charge, the resulting jet of material exhibits a distinct rotation. There is no asymmetry at the macroscopic level that would suggest a ...

background: proper rotation of components in total knee arthroplasty (tka) will largely affect the postoperative outcome. ethnical variation may affect rotational profile. we aimed to evaluate distal femur rotation in iranian population using transepicondylar axes.   methods : from a total of 450 knee ct scans and via consecutive sampling, 150 qualified subjects with normal lower extremities al...

the aim of this case report was to introduce an appliance for correcting severe rotation of anterior teeth in the mixed dentition period. a 9-year-old iranian boy with a mixed dentition class i malocclusion complained of a severely rotated of upper right central incisor. there was a mesiodens between the central incisors. the supernumerary tooth was first extracted and then a whip appliance whi...

This paper presents nonlinear finite element (FE) models to predict time- and temperature-dependent responses of shape memory polymer (SMP) foams in the large deformation regime. For first time, an A SMP foam constitutive model is implemented ABAQUS FE package with aid a VUMAT subroutine thermo-visco-plastic behaviors. phenomenological reformulated adopting multiplicative decomposition gradient...

To study the laws of evolution dynamic increase factors (DIFs), relationship between DIFs and progressive collapse resisting capacity a structure with web cleat joints under column removal scenario, refined finite element model is established based on an existing quasi-static test. The are studied for different loading type, beam height, joint rotation stiffness. It was observed that displaceme...