Abstract This paper presents the results of an experimental analysis distribution transverse stiffness cylindrical compression helical springs with selected values geometric parameters. The influence number active coils and design end on was investigated. Experimental tests were carried out for 18 sets spring samples that differed in coils, end-coil index, three measurements taken per sample, a...

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statement of problem: t-loop is one of the most popular closing loops in orthodontic profession. however its activation is in the contrary to bouschinger effect theory, since the formed bends would be opened during activation. the purpose of this study was to add a helix in a way to be more respondent to the bouschinger effect theory. objectives: to compare the load deflection, maximal elastic ...

The Pazy wing aeroelastic benchmark is a highly flexible wind tunnel model investigated in the Large Deflection Working Group as part of Third Aeroelastic Prediction Workshop. Due to design model, very large elastic deformations order 50% span are generated at highest dynamic pressures and angles attack tunnel. This paper presents static coupling simulations stability analyses for selected onfl...

The purpose of this paper is to propose a method for testing the effect varying kerfing parameters, on flexibilization plywood panels indoor applications. evaluation was made by comparisons change in MOE, MOR, and maximum deflection, between flexibilized non-flexibilized specimens subjected static bending tests based EN 310. In order prevent problem sliding from supports occurring specimens, st...

Pipe vibration is often excited in the deep ocean by ship motions, wave forces and vortex shedding. Elastic joints along the pipe are modeled in an attempt to move the resonance frequencies away from the pipe system. The numerical examples focus on the investigation of single and multiple elastic joints along a long pipe and their effect on three-dimensional (3-D) nonlinear coupled pipe respons...

We present an iterative technique for improving adaptive optics (AO) wavefront correction for retinal imaging, called the Adaptive-Influence-Matrix (AIM) method. This method is based on the fact that the deflection-to-voltage relation of common deformable mirrors used in AO are nonlinear, and the fact that in general the wavefront errors of the eye can be considered to be composed of a static, ...

Impaled cells of Valonia were balanced in a Wheatstone bridge against a simple series-parallel circuit of two resistances and a capacity, the transient charge and discharge curves at make and break of direct current being recorded with a string galvanometer. With the resistances properly balanced, a series of characteristic deflections resulted when the balancing capacity was varied. With many ...

In this paper, the static interaction forces between a medical needle and soft tissue during CT (Computerized Tomography) guided insertion are studied. More precisely a set of linearly independent elements describing the forces (a basis) is identified. This forms a generic basis from which any forces that act on a static needle (that is not fixed at its base and that is inserted into human tiss...

In this study, we present a data processing framework to apply measurements of the Global Navigation Satellite System (GNSS) technique for analyzing and predicting movements civil structures such as bridges. The proposed approach reduces noise level GNSS using Kalman Filter (KF) enables estimation static, semi-static, dynamic components bridge’s series analyses temporal filtering Least Squares ...