High speed non-linear device characterization and uniformity investigations at X-band frequencies exploiting behavioral models

2011 ◽  
Author(s):  
R. S. Saini ◽  
J. W. Bell ◽  
T. A. J. Canning ◽  
S. P. Woodington ◽  
D. FitzPatrick ◽  
...  
Keyword(s):  
High Speed ◽  
Behavioral Models ◽  
Device Characterization ◽  
X Band ◽  
Non Linear ◽  
Non Linear Device

Isothermal Non-Linear Device Characterization

2001 ◽  
Author(s):  
V. Cuoco ◽  
M. de Kok ◽  
M.P.v.d. Heijden ◽  
L.C.N. de Vreede
Keyword(s):  
Device Characterization ◽  
Non Linear ◽  
Non Linear Device

scholarly journals A Practical Numerical Approach to Characterizing Non-Linear Shrinkage and Optimizing Dimensional Deviation of Injection-Molded Small Module Plastic Gears

Polymers ◽  
2021 ◽  
Vol 13 (13) ◽  
pp. 2092
Author(s):  
Xiansong He ◽  
Wangqing Wu
Keyword(s):  
Injection Molding ◽  
High Speed ◽  
Numerical Approach ◽  
Linear Shrinkage ◽  
Influential Factor ◽  
Dimensional Deviation ◽  
Non Linear ◽  
Injection Molded ◽  
Plastic Gears ◽  
Circle Diameter

This paper was aimed at finding out the solution to the problem of insufficient dimensional accuracy caused by non-linear shrinkage deformation during injection molding of small module plastic gears. A practical numerical approach was proposed to characterize the non-linear shrinkage and optimize the dimensional deviation of the small module plastic gears. Specifically, Moldflow analysis was applied to visually simulate the shrinkage process of small module plastic gears during injection molding. A 3D shrinkage gear model was obtained and exported to compare with the designed gear model. After analyzing the non-linear shrinkage characteristics, the dimensional deviation of the addendum circle diameter and root circle diameter was investigated by orthogonal experiments. In the end, a high-speed cooling concept for the mold plate and the gear cavity was proposed to optimize the dimensional deviation. It was confirmed that the cooling rate is the most influential factor on the non-linear shrinkage of the injection-molded small module plastic gears. The dimensional deviation of the addendum circle diameter and the root circle diameter can be reduced by 22.79% and 22.99% with the proposed high-speed cooling concept, respectively.

scholarly journals An Improved Lagrangian-Inverse Method for Evaluating the Dynamic Constitutive Parameters of Concrete

Materials ◽  
2020 ◽  
Vol 13 (8) ◽  
pp. 1871
Author(s):  
Xinlu Yu ◽  
Yingqian Fu ◽  
Xinlong Dong ◽  
Fenghua Zhou ◽  
Jianguo Ning
Keyword(s):  
High Speed ◽  
Inverse Method ◽  
Image Correlation ◽  
Analysis Method ◽  
Stress Strain ◽  
Optical Techniques ◽  
Element Simulation ◽  
Non Linear ◽  
Constitutive Parameters ◽  
Inverse Analysis Method

The dynamic constitutive behaviors of concrete-like materials are of vital importance for structure designing under impact loading conditions. This study proposes a new method to evaluate the constitutive behaviors of ordinary concrete at high strain rates. The proposed method combines the Lagrangian-inverse analysis method with optical techniques (ultra-high-speed camera and digital image correlation techniques). The proposed method is validated against finite-element simulation. Spalling tests were conducted on concretes where optical techniques were employed to obtain the high-frequency spatial and temporal displacement data. We then obtained stress–strain curves of concrete by applying the proposed method on the results of spalling tests. The results show non-linear constitutive behaviors in these stress–strain curves. These non-linear constitutive behaviors can be possibly explained by local heterogeneity of concrete. The proposed method provides an alternative mean to access the dynamic constitutive behaviors which can help future structure designing of concrete-like materials.

Memristors as non-linear behavioral models for passive inter-modulation simulation

2014 ◽  
Author(s):  
Jacques Sombrin ◽  
Patrice Michel ◽  
Geoffroy Soubercaze-Pun ◽  
Isabelle Albert
Keyword(s):  
Behavioral Models ◽  
Non Linear

Preparation of MIM(Metal-Insulator-Meta1) Non-linear Device Using Electropolymerized Poly-N-methylpyrrole

1989 ◽  
Vol 18 (9) ◽  
pp. 1543-1544 ◽  
Author(s):  
Tetsuya Osaka ◽  
Ken’ichi Ueyama ◽  
Kiyoshi Ouchi
Keyword(s):  
Metal Insulator ◽  
Non Linear ◽  
Non Linear Device

Non-linear parametric modelling of a high-speed rail hydraulic yaw damper with series clearance and stiffness

2010 ◽  
Vol 65 (1-2) ◽  
pp. 13-34 ◽  
Author(s):  
W. L. Wang ◽  
Y. Huang ◽  
X. J. Yang ◽  
G. X. Xu
Keyword(s):  
High Speed ◽  
Parametric Modelling ◽  
High Speed Rail ◽  
Non Linear

SIMULATION SCHEME MODELING OF THE SUPER-SPEED TIME BUFFER

2020 ◽  
Author(s):  
А.М. САЖНЕВ ◽  
Л.Г. РОГУЛИНА
Keyword(s):  
High Speed ◽  
High Efficiency ◽  
Low Cost ◽  
Circuit Modeling ◽  
Clock Signal ◽  
Behavioral Models ◽  
Software Environment ◽  
Time Buffer ◽  
The Given ◽  
Simulation Scheme

Приводятся результаты моделирования сверхскоростного буфера тактовых сигналов, выполненного на базе арсенид-галлиевых n-канальных транзисторов в среде OrCAD и полностью отвечающего следующим требованиям: высокие технические характеристики, малые размеры, высокая частота и КПД, гибкость применения. Приведенные поведенческие модели допускают использование любой программной среды по схемотехническому моделированию. The results of simulation of an ultra-high-speed clock signal buffer based on gallium arsenide n-channel transistors in OrCAD are presented, which fully meets the following requirements: high technical characteristics, application flexibility, low cost, small size, high frequency, and high efficiency. The given behavioral models allow the use of any software environment for circuit modeling.

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