Research ArticleOpen accessEvery word in the titleCalculating Curved Needles Deformation in Automated High-Dose Rate Brachytherapy OperationsNikolai A. Gryaznov, Olga V. Velichko, Konstantin Yu. Senchik et al.The article outlines the approach to applying the mechatronic technologies and robotic systems in carrying out the brachytherapy operations. To calculate the elastic state of the flexible needles of different geometry in the prostate model, a mathematical model of the flexible needle deformation has been applied which took into account the medium reaction and was based on the theory of … …American Journal of Applied Sciences, Vol. 13, Issue 3 · 30 Mar 2016 · 7,333 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleApproximation of Experimental Curve of Nonlinear Deformation of DuraluminMoh’d Ishaq Abu HalawaProblem statement: The experimental curves for physically nonlinear deformation of aluminum alloy D-16Т have been approximated in a temperature field. Approach: An analytical approximation variant of plasticity and physical nonlinearity functions was presented and a numerical processing technique of experimental data was described. Results: The corresponding analytical formulas of plasticity functions and nonlinear creep were proposed with mathematically substantiated parameters. … …Journal of Computer Science, Vol. 6, Issue 7 · 31 Jul 2010 · 6,736 accessesView PDFCite
Research ArticleOpen accessEvery word in the titlePrediction of Permanent Deformation of Pavement's Unbounded Layers Based on Cyclic Triaxial TestsB. ŽlenderThis research presents an analytical model for determining permanent deformation of pavement's sub-grade and unbound granular base and sub-base material due to cyclic traffic loading. The model is given for interpreting results of repeated load triaxial tests. It considers long term elastoplastic behavior and resilient behavior of sub-grade and unbound granular material. Permanent deformations are expressed as a function of … …American Journal of Applied Sciences, Vol. 5, Issue 1 · 31 Jan 2008 · 7,123 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleHydro-Mechanical Constraints and Deformations in Road Embankments Using Unsaturated Low-Swelling SoilSoumaïla Gandema, Marcel Bawindsom Kébré, Rimyalegdo Kiébré et al.In this paper, we present the results of a simulation of the evolution of stresses and deformations in a road embankment using unsaturated low-swelling soil under hydro-mechanical pressures, modeled with the finite element code Code_Bright. We assume that this embankment, which supports asphalt, follows the Barcelona Thermo-Elasto-Plastic model (BBM-TEP). This model describes the Thermo-Hydro-Mechanical (THM) behavior of unsaturated fine soils … …American Journal of Applied Sciences, Vol. 22, Issue 1 · 16 Nov 2025 · 2,741 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleActive Faulting and Quaternary Landforms Deformation Related to the Nain FaultAbolghasem Gourabi, Mojtaba YamaniProblem statement: Landforms developed across terrain defining boundary the Nain fault have imprints of recent tectonic activity in the west region of Central Iran. Depositional landforms such as alluvial fans bear signatures of later phases of tectonic activity in the form of faulting of alluvial fan deposits and development of fault traces and scarps within 100 km long and a … …American Journal of Environmental Sciences, Vol. 7, Issue 5 · 2 Nov 2011 · 7,823 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleComputational Investigation of Elastoplastic Deformation of a Sandwich Beam on the Elastic FoundationMoh’d Ishaq Abu HalawaElastoplastic bending of a sandwich beam with a rigid compressible filler on an elastic base has been studied. To describe kinematics of asymmetrical across thickness pack in the bearing layers the Bernoulli hypotheses have been accepted. Displacements in the filler vary linearly over thickness. The distributed superficial loading simulates the hydrostatic effect of the ambient liquid. The reaction of the … …American Journal of Applied Sciences, Vol. 5, Issue 12 · 31 Dec 2008 · 6,567 accessesView PDFCite
Research ArticleOpen accessIn the keywordsInfluence of Time, Temperature and Pressure on the Creasing of Wool/Polyester Blended FibersBrian F.G. KatzStudies investigating the response of a natural/synthetic blended material to variations of time, temperature and pressure with respect to induced deformations have been carried out. Such a material is interesting due to its complexity of responses which are dependent on the nature of each fiber. The study’s sample was a wool/polyester blend with a 45/55 composition respectively. This combination is … …American Journal of Engineering and Applied Sciences, Vol. 14, Issue 4 · 23 Dec 2021 · 6,397 accessesView PDFCite
Research ArticleOpen accessIn the keywordsIterative Feedforward Control for Bearing-Free Multibody SystemsNicola Y. Bailey, Christopher Lusty, Patrick S. KeoghAutomated machinery and robotics are commonly conventional multibody systems containing bearing components, which exhibit uncertain, discontinuous and complex tribological characteristics. These generate wear and fundamentally limit the precision of small scale motion due to the tribological effects being difficult to compensate for using model-based active control. However, they can be eliminated through the replacement of traditional bearing joints with flexure … …Journal of Mechatronics and Robotics, Vol. 5, Issue 1 · 6 Dec 2021 · 6,477 accessesView PDFCite
Research ArticleOpen accessIn the keywords2D Kinematic Quantification of Soil Particles around Growing Plant Root based on Optical MechanicsWenbin Wu, Jian ZhaoThe quantitative kinematic description of the surrounding soil particles during root growth is a technical challenge and biologically important. In this study, a two-dimensional camera-based imaging system was used to observe micro scale interactions between plant roots and soil particles. Maize root tip was imaged during ingress into the soils. This produced a series of two-dimensional images that represent temporal … …American Journal of Biochemistry and Biotechnology, Vol. 16, Issue 4 · 21 Oct 2020 · 6,411 accessesView PDFCite
Research ArticleOpen accessIn the keywordsFailure Mode and Pullout Capacity of Anchor Piles in ClayYanbing Zhao, Haixiao Liu, Mengyuan LiuAnchor piles are wildly adopted in mooring systems. However, there are still challenges in predicting the failure mode and pullout capacity of the pile. Previous Finite Element (FE) analysis was all based on the traditional small strain FE analysis. The whole pullout process of the pile cannot be simulated. Hence, the failure mode of the pile is hard to be … …American Journal of Engineering and Applied Sciences, Vol. 10, Issue 3 · 27 Sep 2017 · 8,216 accessesView PDFCite