scholarly journals Comparative Electromagnetic and Quasi–Static Simulations of a Shortpulse Propagation along Microstrip Meander Delay Lines with Design Constraints

2016 ◽  
Vol 67 (5) ◽  
pp. 387-389 ◽  
Author(s):  
Pavel Orlov ◽  
Talgat Gazizov ◽  
Aleksander Zabolotsky
Keyword(s):  
Numerical Analysis ◽  
Static Analysis ◽  
Pulse Signal ◽  
Delay Lines ◽  
Design Constraints ◽  
Electromagnetic Simulations

Abstract A numerical analysis of microstrip meander delay lines is considered. Results of quasi-static and electromagnetic simulations are given. It is shown that when increasing a number of turns and proportionally reducing their length, distortions of a pulse signal in the line are reduced. At the same time, despite structure’s electrical width increase, the agreement between the results of quasi-static and electromagnetic analyses is improved. Thus, it is demonstrated that when designing the microstrip meander delay lines with minimal distortions, the quasi-static analysis is relevant.

scholarly journals The legal and technical possibilities of using of scaffoldings as the ramp for disabled persons

2015 ◽  
Vol 14 (1) ◽  
pp. 005-014
Author(s):  
Ewa Błazik-Borowa ◽  
Michał Pieńko ◽  
Aleksander Robak
Keyword(s):  
Numerical Analysis ◽  
Numerical Model ◽  
Stress Analysis ◽  
Static Analysis ◽  
Disabled Persons ◽  
Technical Documentation ◽  
System Components ◽  
The Disabled ◽  
Computer Calculations ◽  
Dynamic Impacts

The paper is devoted to the problems of legal and technical making the ramp for disabled persons with scaffolds. Scaffolding system components allow you to assemble a structure that serve as the ramp and fulfil the requirements of technical conditions. From a legal point the most important is the fact that the ramp construction needs a building application. In this regard, the greatest problems is obtaining the rights to use the property for construction purposes. A big challenge is to also perform stress analysis, taking into account of dynamic impacts caused by the movement of the trolley. In this regard, the paper presents a numerical model of the ramp, static analysis, modal analysis and results of prediction of a disabled person ride on the trolley. The results of computer calculations have shown that the construction of the ramp requires the exact numerical analysis. Therefore, the best option would be in order to scaffolding companies will prepare relevant technical documentation of products which are ramps for the disabled.

Numerical analysis of pulse signal restoration by stochastic resonance in a buckled microcavity

2016 ◽  
Vol 55 (12) ◽  
pp. 3351 ◽  
Author(s):  
Heng Sun ◽  
Hongjun Liu ◽  
Qibing Sun ◽  
Nan Huang ◽  
Zhaolu Wang ◽  
...  
Keyword(s):  
Numerical Analysis ◽  
Stochastic Resonance ◽  
Pulse Signal ◽  
Signal Restoration

scholarly journals Numerical Static Analysis of the Curtain Wall with Light Steel Structure

2017 ◽  
Vol 17 (2) ◽  
pp. 43-50 ◽  
Author(s):  
Maciej Major ◽  
Mariusz Kosiń ◽  
Izabela Major
Keyword(s):  
Numerical Analysis ◽  
Static Analysis ◽  
Steel Structure ◽  
Thin Wall ◽  
Curtain Wall ◽  
Lower Limits ◽  
High Building

Abstract This paper presents a numerical analysis of the effect of wind on the curtain wall in a high building. Two types of curtain wall were adopted: made of thin-wall C sections with nominal dimensions and the section that takes into consideration lower limits specified by the manufacturer.

scholarly journals Static analysis of bond between prestressing strand and UHPC exposed to elevated temperatures

2021 ◽  
Vol 3 (1) ◽  
pp. 102-107
Author(s):  
David Čítek ◽  
Jindřich Čech ◽  
Petr Pokorný ◽  
Jiří Kolísko
Keyword(s):  
Numerical Analysis ◽  
Static Analysis ◽  
Material Properties ◽  
Elevated Temperatures ◽  
Cement Composite ◽  
Composite Model ◽  
Experimental Results ◽  
Reference Temperature ◽  
Pulling Force ◽  
Prestressing Strand

This article deals with the numerical analysis of the bond of a prestressing strand with UHPC heated to elevated temperatures and subsequently cooled. Numerical analysis was performed with experimentally determined material properties of UHPC at a reference temperature of 20 °C and further after heating to temperatures of 200, 400 and 600 °C and subsequent annealing to normal temperature. The resulting deflection depending on the pulling force from the numerical analysis were compared with the experimental results. The results are used to configure the cement composite model for more demanding simulations of structures and load cases.

scholarly journals An Omni-Directional Wall-Climbing Microrobot with Magnetic Wheels Directly Integrated with Electromagnetic Micromotors

10.5772/45663 ◽  
2012 ◽  
Vol 9 (1) ◽  
pp. 16 ◽  
Author(s):  
Xiaoning Tang ◽  
Dawei Zhang ◽  
Zhenbo Li ◽  
Jiapin Chen
Keyword(s):  
Static Analysis ◽  
Magnetic Force ◽  
Visual Detection ◽  
Load Capacity ◽  
Design Constraints ◽  
Climbing Ability ◽  
Stators And Rotors

This paper presents an omni-directional wall-climbing microrobot with magnetic wheels. The integral design with an actuator and adhesive is realized by integrating stators and rotors of an MEMS-based electromagnetic micromotor with a magnetic wheel. The omni-directional wall-climbing mechanism is designed by a set of steering gears and three standard magnetic wheels. The required torque and magnetic force for microrobot movement are derived by its static analysis. The size of the magnetic wheel is optimized, with consideration of its own design constraints, by ANSOFT and Pro/Engineer simulation so as to reduce unnecessary torque consumption under the same designed load. Related experiments demonstrate that the microrobot (diameter: 26mm; height: 16.4; mass: 7.2g; load capacity: 3g) we have developed has a good wall-climbing ability and flexible mobility, and it can perform visual detection in a ferromagnetic environment.

scholarly journals Salsa: An Automatic Tool to Improve the Numerical Accuracy of Programs

10.29007/j2fd ◽  
2018 ◽  
Author(s):  
Nasrine Damouche ◽  
Matthieu Martel
Keyword(s):  
Numerical Analysis ◽  
Embedded Systems ◽  
Software Architecture ◽  
Static Analysis ◽  
Abstract Interpretation ◽  
Experimental Results ◽  
Floating Point ◽  
Numerical Accuracy ◽  
Automatic Tool ◽  
Concise Description

This article describes Salsa, an automatic tool to improve the accuracy of the floating- point computations done in numerical codes. Based on static analysis methods by abstract interpretation, our tool takes as input an original program, applies to it a set of transformations and then generates an optimized program which is more accurate than the initial one. The original and the transformed programs are written in the same imperative language. This article is a concise description of former work on the techniques implemented in Salsa, extended with a presentation of the main software architecture, the inputs and outputs of the tool as well as experimental results obtained by applying our tool on a set of sample programs coming from embedded systems and numerical analysis.

scholarly journals Comparative Numerical Analysis Of Advertising Board Tower Using Adina And Autodesk Robot Structural Analysis

2015 ◽  
Vol 15 (2) ◽  
Author(s):  
Maciej Major ◽  
Krzysztof Kuliński
Keyword(s):  
Numerical Analysis ◽  
Structural Analysis ◽  
Static Analysis ◽  
Computer Aided Design ◽  
Displacement Analysis ◽  
Design Program ◽  
Computer Aided ◽  
The Subject ◽  
Aided Design

Abstract In this paper the subject of comparative stress and displacement analysis for different computer aided design program environments is discussed. For the purposes of analysis ADINA and Autodesk ROBOT program were used. In both programs an advertising board tower was modeled. Static analysis was adopted for the computations. Obtained results allowed showing small differences and limitations between those two environments.

scholarly journals Synthesis and static analysis of the deployable frame for a morphing wing

2012 ◽  
Vol 227 (3) ◽  
pp. 565-579 ◽  
Author(s):  
Jing-Shan Zhao ◽  
Li Ye ◽  
Fulei Chu ◽  
Jian S Dai
Keyword(s):  
Numerical Analysis ◽  
Static Analysis ◽  
Structural Stiffness ◽  
Morphing Wing ◽  
Folding Process ◽  
Prismatic Joint ◽  
Structure And Motion ◽  
Revolute Joints ◽  
Primary Element ◽  
Prismatic Joints

This article proposes a deployable frame for a morphing wing. The frame is redundantly constrained in structure, and therefore it has both merits of high structural stiffness and strength of a truss structure and motion flexibility of a mechanism. The primary element of the foldable frame is synthesized from the viewpoint of identical strength principle. The major structures of previous deployable wings are mostly based on prismatic joints. However, the deflections of the cantilevered links might not satisfy the primary geometry requirements of the prismatic joint. Therefore revolute joints are used in our deployable frame to avoid violating the geometry conditions for prismatic joints resulting from the different deflections of its contacting two parts. The deflection and slope of every joint node of the foldable frame is investigated within the deploying/folding process. Numerical analysis indicates that the deployment ratio of the foldable frame can be designed much larger than that of the existing morphing wing even considering the allowable deflection under the completely unfolded situations.

Numerical Analysis of the Influence of Piles on Separated Island Platform Subway Station

2013 ◽  
Vol 716 ◽  
pp. 721-726
Author(s):  
Yao Zhou ◽  
Dan Meng ◽  
Yuan Feng Wang
Keyword(s):  
Numerical Analysis ◽  
Dynamic Analysis ◽  
Static Analysis ◽  
Seismic Analysis ◽  
Subway Station ◽  
Two Dimensional

The effect of bridge piles on separated island platform subway station performance was studied by performing two-dimensional numerical analysis. It turned out that the stress of subway station under piles tended to be larger than that without piles no matter under static analysis, dynamic analysis, or superposition of both analyses. Therefore, its necessary to consider the influence of piles on this kind of subway station in seismic analysis and, moreover, strengthen the stress concentrated areas.

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