نتایج جستجو برای: diaphragm deflection

تعداد نتایج: 21132  

Journal: :Actuators 2022

In order to understand the differences between dual synthetic jets (DSJs) and (SJs), particle image velocimetry (PIV) technology is used capture basic flow field characteristics of a jet actuator (DSJA) (SJA), then careful comparison them implemented. The results indicate that cycle DSJ divided into two stages. near-field downstream, pair entrain fluid around interact with each other, making co...

Journal: :The International Journal of Multiphysics 2023

The parameters of diaphragm spring are optimized and the dimensional in this design determined with careful derivation. global optimization feature genetic algorithm is used to optimize compared damping effect standard algorithms. results show that can significantly reduce force realize vibration control clutch when requirements met. Due large error calculating characteristics by commonly A-L m...

Journal: :The European respiratory journal 1997
S Nava C Bruschi C Fracchia A Braschi F Rubini

The aim of this study was to evaluate whether pressure support ventilation (PSV) requires different diaphragmatic efforts and patient-ventilator matching, according to the underlying disease. Four groups of patients requiring PSV were studied: Group A, recovering from an episode of acute respiratory failure due to adult respiratory distress syndrome (ARDS); Group B, with postsurgical complicati...

In this paper, a novel single-chip MEMS capacitive microphone is presented. The novelties of this method relies on the moveable aluminum (Al) diaphragm positioned over the backplate electrode, where the diaphragm includes a plurality of holes to allow the air in the gap between the electrode and diaphragm to escape and thus reduce acoustical damping in the microphone. Spin-on-glass (SOG) was us...

D. Mostofinejad and M.Davoodnabi,

In most cases, structural engineers assume a concrete floor to be a rigid diaphragm. Although this simplification is in most cases acceptable, it should be noted that such an assumption may be distrusted due to certain problems. Concrete structures with staggered shear walls are among those whose analysis should be conducted with special concern for the behavior of their floor diaphragms. Howev...

The purpose of this research is to study the mechanical behavior of a micropump with clamped circular diaphragm which is the main component of drug delivery systems. In this paper, the non-linear governing equations of the circular microplate using Kirchhoff thin plate theory was been extracted based on the modified couple stress (MCST) and classical (CT) theories. Then, the non-linear equation...

Journal: :journal of mechanical research and application 2009
reza salami naserian vahid kadkhodaei

in this paper, the axisymmetric corrugated diaphragm using finite element method will be discussed, so that half of these diaphragms’ cross sections and later the applied pressure will be considered. following this, using the consequent equations and visual basic software, a computer program will be provided which receives the diaphragms’ particulars such as diameter, thickness, pressure and th...

ژورنال: Journal of Railway Research 2016
Ataei, S., Jahangiri, M., miri, A.,

A common practice for detailed assessment of masonry bridges is to use recorded deflection signature of mid-span of such structures due to predefined loading schemes. However, measuring the deflection of bridges with tall piers or those situated over deep valleys introduces certain difficulties, since common deflection-meters require a reference point relative to which the measureme...

Journal: :Earthquake Engineering & Structural Dynamics 2023

The objective of this paper is to study the elastic seismic response simplified building models that include considerations vertical lateral force resisting system (walls) and horizontal (floor diaphragms) through parametric study. assumption rigid diaphragms often used in design buildings; however, research suggests diaphragm may influence fundamental period response. In paper, a model present...

Journal: :Journal of applied physiology 1991
S S Margulies

To quantify the relationship between both regional and overall diaphragm morphometry and body weight in the dog, diaphragm thickness was measured in five regions of the costal diaphragm and three regions of the crural diaphragm in 40 healthy dogs (8-40 kg). Surface area of the diaphragm, diaphragm weight, and body weight were also determined. Diaphragm surface area and weight varied linearly wi...

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