نتایج جستجو برای: spring system

تعداد نتایج: 2274086  

Journal: :International Journal of Progressive Sciences and Technologies 2023

This research discusses the modeling of a magnet-spring system by taking into account damping factor. model represents movement magnet suspended from ceiling at bottom spring, and directly below it, there is another identical permanently fixed on floor. The this continuation study Fay Med (2005), which discussed same but ignored

2006
Ding Zhou Tianjian Ji David Hills

The vibratory characteristics of rectangular plates attached with continuously and uniformly distributed spring-mass in a rectangular region are studied which may represent free vibration of a human–structure system. Firstly, the governing differential equations of a plate with uniformly distributed spring-mass are developed. When the spring-mass fully occupies the plate, the natural frequencie...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شیراز - دانشکده حقوق و علوم سیاسی 1390

چکیده : نظام انتخاباتی قواعد و چار چوب های به رسمیت شناخته شده ای است که بیانگر چگونگی تبدیل آرای مردم به مناصب و پست های سیاسی است. این نظام انتخابات باید به گونه ای عمل کند که نتیجه آن فراهم شدن مکانیسم و ساز و کار مطلوب و مناسب برای برگزاری انتخابات سالم و رقابتی باشد. به نظر می رسد نظام انتخاباتی جمهوری اسلامی ایران دارای ضعف ها و نواقصی است که به سبب آن ها نمی توان انتخابات مطلوب را برگزا...

In this study, an impact behavior of spherical striker on a double-walled carbon nanotube (DWCNT) is presented based on a three degree of freedom spring-mass model and the finite element (FE) simulations. The semi-analytical solution of the transverse impact of a striker on a DWCNT is investigated by using the elasticity nonlocal theory of Euler-Bernoulli (EBT) and Timoshenko (TBT) nanobeams. T...

2003
Mahmood M. Shokrieh Davood Rezaei

A four-leaf steel spring used in the rear suspension system of light vehicles is analyzed using ANSYS V5.4 software. The finite element results showing stresses and deflections verified the existing analytical and experimental solutions. Using the results of the steel leaf spring, a composite one made from fiberglass with epoxy resin is designed and optimized using ANSYS. Main consideration is ...

2009
NA McKeag VN Kodoth AJ Tomlin SL Fairley MJ Daly AAJ Adgey JJ McKinley E Mawhinney M Watt I Rennie MT McCormick JA Purvis SM Hughes AS Lewis T Rea AB Atkinson PM Bell CH Courtney DR McCance K Mullan SJ Hunter Wallace Dinsmore Michael G Wyllie Patricia Heath LJ Dixon EC Hodkinson J Shand DJ Flannery DJ McEneaney IBA Menown AJ McClelland SJ Walsh

81st (Spring) Meeting of Ulster Society of Internal Medicine, Friday 15th May 2009 Medical Education Centre, Craigavon Hospital, Portadown

2000
Sean A. Bailey Jorge G. Cham Mark R. Cutkosky Robert J. Full

We describe the locomotion dynamics of a biomimetic robot and compare them with those of its exemplar: the cockroach. The robot is a small (0.275kg) hexapod created using a layered manufacturing technique that allows us to tailor the compliance and damping of the limbs to achieve passive stabilization similar to that observed in insects. The robot runs at over 3 body-lengths per second (55 cm/s...

2010
Tianhu He Leilei Cui Cheng Chen Zhigang Suo

Due to their large strain capability, dielectric elastomers are promising materials for application as transducers in cameras, robots, valves, pumps, energy harvesters, and so on. The dielectric elastomer transducers are based on the deformation of a soft polymer membrane contracting in thickness and expanding in area, induced by the application of a voltage across the two compliant electrodes ...

2002
Pippa Norris

In this study, it is theorized that party websites play a distinctive role in two regards: (i) they function as a pluralistic civic forum by facilitating the voice of oppositional challengers and increasing the visibility of minor and fringe parties, so that attentive citizens can learn more about the range of electoral choices; (ii) in addition, party websites function as a channel for politic...

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