in this article, vibration analysis of an euler-bernoulli beam resting on a pasternak-type foundation is studied. the governing equation is solved by using a spectral finite element model (sfem). the solution involves calculating wave and time responses of the beam. the fast fourier transform function is used for temporal discretization of the governing partial differential equation into a set ...

Preliminary studies based on small sample sets show that near infrared (NIR) spectroscopy has the potential for rapidly estimating many important wood properties. However, if NIR is to be used operationally, then calibrations using several hundred samples from a wide variety of growing conditions need to be developed and their performance tested on samples from new populations. In this study, 1...

A variational formulation is presented for the problem of predicting the optimal structural system from among a discrete set of possible designs. The development is written for maximum stiffness design of single-purpose structures. The distribution among admissible structural configurations of the prescribed loads is determined as part of the solution. An extremum problem interpretation also pr...

Single-pass honing is an important machining method for finish of holes, which can meet the requirement high efficiency and consistency holes. Characterization life prediction single-pass tool are necessary to improve accuracy holes honed, especially dimension accuracy. a single layer abrasive with fixed dimension, still remains problematic characterization prediction. For fuel injection nozzle...

The authors review approaches to the early prediction of cardiovascular diseases in patients with type 1 diabetes mellitus, e.g. using central arterial pressure, stiffness, and a loss stiffness gradient. bulk data was presented either on mellitus general or 2 while there is clear gap information mellitus. study elastic properties vascular bed these can become basis for prevention complications.

The main purpose of this paper is concerned with the sensitivity analysis of main rotor dynamic response pertaining to variation of some relevant system parameters effectively supports the preliminary design of both articulated and hingeless helicopter rotor configurations. The methodology is laid out based on Galerkin solution of partial differential equation (PDE) of main rotor with flexible ...

1 Abstract Bio-based materials offer interesting solutions to sustainable and eco-friendly industrial applications in the future. In this study micromechanical modeling and Mori-Tanaka mean field homogenization technique is used for stiffness prediction in short flax fiber reinforced PLA biopolymer. The fiber geometry distribution is considered in the homogenization along with the orientation d...

Background Aortic stiffness parameters have been studied as a risk marker corollary to traditional risk markers used in Framingham risk stratification. Differences in risk prediction ability have been noted between pulse wave velocity (PWV) and other parameters. Here, the relationship of PWV and aortic distensibility with left ventricular deformational measurements (e.g. radial strain, circumfe...