69 articles for “Stiffness”

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Research ArticleOpen accessIn the abstractFemtotechnology: Nuclear Matter with Fantastic PropertiesA. A. BolonkinProblem statement: At present the term 'nanotechnology' is well known-in its' ideal form, the flawless and completely controlled design of conventional molecular matter from molecules or atoms. Such a power over nature would offer routine achievement of remarkable properties in conventional matter and creation of metamaterials where the structure not the composition brings forth new powers of matter. But even … …American Journal of Engineering and Applied Sciences, Vol. 2, Issue 2 · 30 Jun 2009 · 8,681 accessesView PDF Cite

Research ArticleOpen accessIn the abstractHow Does The Bone Shaft Geometry Affect its Bending Properties?Kaveh PourAkbar Saffar, Nima JamilPour, Seyed Mohammad RajaaiIn this research, ten fresh specimens of sheep tibiae were provided from slaughtered animals. Whole bone specimens were loaded in three-point bending according to standard wet bone test protocols. Mechanical properties were determined and compared with the results which were obtained from two dry bone tests. The results showed that fracture bending moment and bone extrinsic stiffness had significant relations … …American Journal of Applied Sciences, Vol. 6, Issue 3 · 31 Mar 2009 · 8,148 accessesView PDF Cite

Research ArticleOpen accessIn the abstractCollocation Discrete Least Squares (CDLS) Method for Elasticity Problems and Grid Irregularity Effect AssessmentM. Naisipour, M. H. Afshar, B. Hassani, A. R. FiroozjaeeA meshless approach, collocation discrete least square (CDLS) method, is extended in this paper, for solving elasticity problems and grid irregularity effect is assessed. In the present CDLS method, the problem domain is discretized by distributed field nodes. The field nodes are used to construct the trial functions. The moving least-squares interpolant is employed to construct the trial functions. Some … …American Journal of Applied Sciences, Vol. 5, Issue 11 · 30 Nov 2008 · 7,091 accessesView PDF Cite

Research ArticleOpen accessIn the abstractExperimental Modeling of Pile-Leg Interaction in Jacket Type Offshore Platforms Cyclic Inelastic BehaviorM.R. Honarvar, M.R. Bahaari, B. AsgarianOffshore platforms in seismically active areas should be designed to survive in the event of severe ground excitations with no global structural failure. The annulus between the pile and leg in jacket-type offshore platforms can be filled with cement grout as a means of reducing horizontal deflections, inhibiting corrosion and preventing local damages. This paper discusses an experimental approach which … …American Journal of Applied Sciences, Vol. 5, Issue 11 · 30 Nov 2008 · 7,004 accessesView PDF Cite

Research ArticleOpen accessIn the abstractGeo-Seismic Environmental Aspects Affecting Tailings Dams FailuresJuan M. Mayoral, Miguel P. RomoSeismic performance evaluations of tailings dams are essential for characterizing the geo-environmental risks posed by these earthen structures, which should include the geotechnical hazards implied by slope instability failure, free board loss and the potential release of contaminants. The observed damage is more important when liquefaction occurs on the dam body and foundation, which often leads to cracking, settlements, tilting … …American Journal of Environmental Sciences, Vol. 4, Issue 3 · 30 Jun 2008 · 7,086 accessesView PDF Cite

Research ArticleOpen accessIn the abstractInfluence of Fasteners Disposition on Behaviour of Timber-Framed Walls with Double Fibre-Plaster Coating BoardsM.Kuhta, M.PremrovThis paper provides experimental analysis of timber-framed walls, coated with double fibre-plaster coating boards fastened to the timber frame. As the walls under a horizontal load actually behave like a deep composite beam, the fasteners disposition is very important and directly influences bearing capacity and stiffness of the wall. Therefore, three different groups of test samples with staple distances of … …American Journal of Applied Sciences, Vol. 5, Issue 1 · 31 Jan 2008 · 7,113 accessesView PDF Cite

Research ArticleOpen accessIn the abstractExperimental Investigation Of Polymeric Compound Cross Section SpringsMayas Al-Mahasne, Tareq A. Abu ShreehahThis paper presents an experimental investigation of the characteristic of the compound cross section springs on models made from polymeric materials (organic glass). Two constructive variants of the compound spring sections were specified with the help of criteria of similarity. The criterion of similarity of natural and model springs was determined by the simulation method at particular spring deflection. The … …American Journal of Applied Sciences, Vol. 4, Issue 1 · 30 Apr 2007 · 6,755 accessesView PDF Cite

Research ArticleOpen accessIn the abstractFree Vibration Analysis of a Cross-Ply Laminated Composite Beam on Pasternak FoundationR. A. Jafari-Talookolaei, M. T. AhmadianIn this study, free vibration analysis of a cross-ply laminated composite beam (LCB) on Pasternak foundation was investigated. Natural frequencies of beam on Pasternak foundation are computed using finite element method (FEM) on the basis of Timoshenko beam theory. Effect of both shear deformation and rotary inertia are implemented in the modeling of stiffness and mass matrices. The model was … …Journal of Computer Science, Vol. 3, Issue 1 · 31 Jan 2007 · 7,159 accessesView PDF Cite

Research ArticleOpen accessIn the abstractLaboratory Diameteral Fatigue Performance of Stone Matrix Asphalt with Cellulose Oil Palm FiberRatnasamy Muniandy, Bujang B.K. HuatStone Matrix Asphalt (SMA) is a gap-graded mix that is gaining popularity worldwide. Generally, gap graded mixes are thought to be weak in fatigue resistance. In this study, cellulose fibers were pre-blended in PG64-22 binder with fiber proportions of 0.2%, 0.4%, 0.6%, 0.8% and 1.0% by weight of aggregates. The fiber-modified binder showed improved rheological properties and showed that the … …American Journal of Applied Sciences, Vol. 3, Issue 9 · 30 Sep 2006 · 8,979 accessesView PDF Cite