····· lezzter Preis 44.10€ ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray Although 90% of robotic manipulators in use are of serial manipulator type, the current research work being done is much more in the field of parallel manipulators. Parallel manipulators have better rigidity, speed and accuracy when compared to serial manipulators. Also its inverse kinematic analysis has a closed form solution where as the same for serial manipulators is cumbersome and mostly the analysis is done with numerical methods. However parallel manipulators have smaller workspace with abundant singularity points within the workspace. Researchers are trying to find algorithm which can be used for dimensional synthesis of parallel manipulators with minimum singularities. ····· 1036124637
····· lezzter Preis 39.90€ ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray Firecrackers are used all over the world during New Year`s Eve, some festivals and to celebrate different social as well as religious occasions. Explosions of firecrackers, especially on New Year`s Eve, is enormous and some people are subjected to a peak sound pressure levels, which excide permissible level, and can cause loss of hearing. In many cases, firecracker explosions present a source of annoyances and stress-related diseases, so for people as well as for wild and domestic animals. In addition, they present a fire hazard and risk of personal injuries (burns of body and face, loss of sight and fingers). The number of firecracker explosions and a peak sound pressure distribution are the main parameters influencing on the place of immission, therefore some statistical properties were observed. A special emphasis is given to the joint probability density distribution of the peak sound overpressure levels, originating from a great number of firecracker random explosions. Investigations have shown that in case of the high enough number of explosions in unit time, the Rayleigh distribution tends to a Gaussian one. ····· 1036124506
····· lezzter Preis 53.10€ ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray Vibrational modes of a submarine hull are excited by fluctuating forces from the propeller acting in both axial and radial direction. Structural vibrations result in significant and unwanted radiated noise that can lead to discomfort for passengers and marine wildlife and detection in case of defence vessels. Aim of this book is to present some analytical tools that are used to model the structural and acoustic response of a submarine. The submarine hull is modelled as a cylindrical shell with internal bulkheads and closed by truncated conical shells, the entire structure is submerged in a heavy fluid medium. The analytical models developed in this book can also be used to examine the vibrations of other engineering structures made of coupled cylindrical-conical shells such as aircraft, missiles and autonomous underwater vehicles, where fluid-structure interaction is important. This book is addressed to naval and mechanical engineers with particular interest in submerged vessel or vibrations of coupled shells with or without the interaction with an acoustic medium. ····· 1036124467
für 53.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray In present book are represented obtained by authors results of investigations of various unsteady problems of waves propagation in different media. In Introduction there are described obtained solutions of problems for three dimensional linear and nonlinear waves, including investigations of diffraction nonlinear problems, caustics, nonlinear quasi-monochromatic waves, narrow nonlinear gaussian beams, various unsteady mixed boundary value problems of elasticity, solved by Wiener-Hopf technique and derivation of solution in Smirnov-Sobolev form, exact 3D method of determination of frequencies of vibrations of magneto-elastic and piezo-electric plates and shells by derivation of transcendent equations and their numerical solution, as well as, in solution of problems of investigation of probabilities and prognosis for stochastic processes in various branches of science. ····· 1036121566
für 53.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray The study of flow-induced noise, known as aeroacoustics, is concerned with the sound generated by turbulent and/or unsteady vortical flows including the effects of any solid boundaries in the flow. Flow-induced noise is a serious problem in many engineering applications. The most notorious one is the jet noise. In this work a shock-capturing adaptive filter is designed. It is indispensable with non linear propagation of acoustic waves or in cases when discontinuities are presents. With the combination of Dispersion Relation Schemes, Runge-Kutta optimized algorithm, selective and nonlinear filter it is possible to calculate directly acoustic and aerodynamic field in a single computation, by solving the compressible unsteady Navier-Stokes equations. Actually, traditional theories using acoustic analogy are appropriate for predicting noise when a sufficiently accurate solution of turbulent flow is available. On the contrary, the approach proposed here can be applied to cases when aerodynamic sources are influenced by acoustic motion such as flames, jet or wake instabilities. This work has been done in collaboration with Dr. Christophe Bogey of École Centrale de Lyon, France. ····· 1036121506
für 44.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray The book Exhaust Muffler is a required part of pursuing research work in the field of Internal Combustion Engines at most universities. It provides in- depth knowledge to the subject for the beginners and stimulates further interest in the topic. The salient features of this book includes: Strong coverage of key topics User friendly and accessible presentation to make learning more interesting as much as possible Its approach is explanatory and language is lucid and communicable Recent research papers are incorporated ····· 1036120880
für 71.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray V monografii predstavleny rezul`taty teoreticheskikh issledovaniy ryada fundamental`nykh problem lineynoy akustiki. Rassmotrena zadacha volnovodov s ideal`nymi stenkami i vyazkoy rabochey sredoy, kotoraya do nastoyashchego vremeni ne poddavalas` analiticheskomu opisaniyu, veroyatnee vsego, po prichine svoey znachitel`noy slozhnosti. Razrabotana sistemnaya teoriya difraktsii, osnovannaya na realizatsii dialekticheskoy posledovatel`nosti: ot prostogo k slozhnomu, to est` vnachale detal`no izucheny svoystva planarnykh apertur, a zatem vychislitel`naya metodologiya perenesena na figury bolee obshchego vida s pomoshch`yu tekhniki difraktsionnykh proektsiy. Posredstvom izlozhennoy v monografii teorii difratsii vpervye podrobno opisany nekotorye protsessy puchkogo rasprostraneniya akusticheskikh kolebaniy, v tom chisle v usloviyakh sloistosti rabochey sredy. Dany resheniya gruppy klassicheskikh zadach lineynoy akustiki na osnove sozdannogo v nastoyashchey rabote novogo analiticheskogo apparata. ····· 1036119973
für 44.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray A composite concrete floor is proposed in this book to suppress stationary random vibration in concrete structures using a compound vibration absorber named vibration damping compound (VDC). While the traditional vibration absorber can damp down the vibration mainly at the pre-tuned mode of the primary structure, active damping is generated by the proposed VDC to damp down all resonant modes of interest of the vibrating structure and the spatial average mean square motion of the vibrating structure can be minimized. Only one absorber and one feedback signal are required to achieve vibration suppression of a concrete structure under stationary random excitation. A special composite concrete floor is designed such that all vibration modes of the concrete structures become critically damped. It is proved analytically that the proposed VDC damps the vibration of the entire structure instead of just the attachment point of absorber. ····· 1036119814
····· lezzter Preis 44.10€ ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray Mechanics of Materials Laboratory and Experiments is a text book that offers undergraduate students hands on experience in traditional and modern experiments in Strength of Materials and Mechanics of Deformable Solids. The book is to provide important information to help students understand the principles and restrictions of both theoretical and experimental analyses in Mechanics of Materials. The book introduces ways to assess the reliability of laboratory measurements, together with the methods used to determine the reliability of calculations based on the measurements. Advantages of computer controlled laboratory activities include students` excitement about their first - hand experience with modern equipments. The students will also learn to perform well the technical report writing, and to insure the safety and health of laboratory work. ····· 1036119626
für 53.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray Acoustic method is popular for non-destructive testing of materials. Testing of different materials using acoustics is already in use. It has been also tried for biological materials such as seeds. But no standard acoustic apparatus for testing seeds has been endeavored. This book showed acoustic parameters determination of some common cereal and oil seeds using standard apparatus (impedance tube). Data from impedance tube were used to form acoustic spectra. The spectra were analyzed using multivariate statistics. The book also covers basics of acoustics and acoustic parameters related to seeds. It would be useful for people working with acoustic properties of seeds and for those who are interested in analyzing acoustic spectrum with multivariate statistics. ····· 1036119525
für 44.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray In this Book we discuss Problems in Rotating disc by using Seth`s B. R. Transition theory. We discuss What is the effect of stresses having variable thickness and with edge loading.Rotating Disc having variable thickness with rigid shaft, It has been observed that in the absence of thickness, rotating disc with inclusion and made of compressible material yields at the internal surface at a lesser angular speed as compared to a rotating disc made of incompressible material whereas it requires a higher percentage increase in angular speed to become fully plastic. With the effect of variation thickness, higher angular speed is required to yield at the internal surface.When Rotating disc by finitesimal deformation with loading edge under steady state temperature,It has observed that for incompressible material required higher angular speed for initial yielding as compare to compressible material. With the effect of loading edge, lesser angular speed required for initial yielding as compare to without edge loading. With the introduction of thermal effect rotating disc with loading edge much required to lesser angular speed as compare to rotating disc without thermal effect. ····· 1036119499
für 71.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray Vychislitel`naya gidrodinamika (VGD) samyy molodoy i bystro razvivayushchiysya razdel mekhaniki zhidkosti. Dlya effektivnogo ee ispol`zovaniya v gidrodinamicheskom analize,v tom chisle i pri primenenii kommercheskikh paketov, neobkhodimo sochetanie znaniy teoreticheskoy gidrodinamiki, chislennykh metodov i vychislitel`nykh tekhnologiy. V sovremennoy bibliografii voprosy teoreticheskoy i vychislitel`noy gidrodinamiki, kak pravilo, rassmatrivayutsya razdel`no. Prakticheski otsutstvuyut publikatsii, v kotorykh s edinykh pozitsiy byli by izlozheny osnovnye matematicheskie modeli techeniy i pokazan put` ot etikh modeley do komp`yuternykh programm. Predlagaemaya kniga prizvana chastichno vospolnit` etot probel. V ney takzhe privoditsya opisanie sovremennogo sostoyaniya i problem ispol`zovaniya komp`yuternykh tekhnologiy dlya resheniya zadach gidrodinamicheskogo analiza v korablestroenii, v tom chisle s pomoshch`yu razlichnykh paketov VGD. Kniga mozhet byt` polezna spetsialistam v oblasti mekhaniki zhidkosti i proektirovaniya morskikh ob`ektov, a takzhe studentam i aspirantam sootvetstvuyushchikh napravleniy podgotovki. ····· 103615329
für 71.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray Ponyatie kvazitsilindricheskaya zvukovaya volna vvedeno avtorom v 1985 god kak novy klass voln. Pri ety voln snizheniya urovnya zvukovogo davleniya zavisit ot rasstoyaniy do raschetnoy tochki i variruet v intervale (3 6) dBA, v chem sostoitsya raznitsa ot sferichnykh i tsilindricheskikh voln. Monografiya sostoitsya ot vvedenie, shesti osnovnykh glav i zaklyuchenii. Vo vvedenii predstavlena obshchaya kharakteristika raboty. V pervoy glave dan analiz sovremennogo sostoyaniya voprosa. Vo vtoroy glave izlozheny rezul`taty teoreticheskikh issledovaniy formirovaniya zvukovogo polya na primagistral`noy territorii iskhodya iz klassicheskoy volnovoy teorii akustiki i razvita teoriya kvazitsilindricheskikh zvukovykh voln. V tretey, chetvertoy i pyatoy glavakh issledovany zakonomernosti rasprostraneniya zvukovykh voln v razlichnykh usloviyakh. V shestoy glave predstavleny rekomendatsii po ratsional`nomu razmeshcheniyu zdaniy na territorii zastroyki. V monografii opisanny nekotorykh iz programm sistemmy dlya akusticheskikh raschetov SoundBG. Avtory programm Nikolov N., Mazhdrakov M., Benov D., Trapov G. Monografiya prednaznachena dlya nauchnykh rabotnikov, spetsialistov i studentov v oblasti prikladnoy akustiki, urbanizatsii i gorodskoy ekologii. ····· 103615303
für 53.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray Deformirovanie uprugikh sistem s odnostoronnimi svyazyami modeliruetsya nelineynymi kraevymi zadachami, kotorye v otlichie ot zadach klassicheskoy nelineynoy teorii uprugosti, obladayut nelineynost`yu kak sushchestvennym (neustranimym) svoystvom. Tak kak nazvannaya nelineynost` svyazana s osobennostyami konstruktsii (nalichie odnostoronnikh svyazey ili ogranichenii), to sootvetstvuyushchuyu teoriyu i zadachi mozhno oboznachit` terminom konstruktivno-nelineynaya mekhanika. ····· 103615156
für 71.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray Predlozhen novyy podkhod k teoreticheskomu opisaniyu protsessov deformirovaniya i razrusheniya dispersno napolnennykh elastomerov. Eto strukturno-neodnorodnye sistemy, sostoyashchie iz smesi zhestkikh zernistykh chastits i myagkoy polimernoy matritsy, prichem kontsentratsiya napolnitelya sostavlyaet ot 50 do 90% ot maksimal`noy. Ikh promyshlennymi analogami yavlyayutsya napolnennye reziny, tverdye raketnye topliva i t.d. Razrabotannaya avtorom model` pozvolyaet v yavnom vide uchest` svoystva komponent i morfologiyu vnutrennego stroeniya vysokonapolnennogo kompozita (vzaimnoe sluchaynoe raspolozhenie chastits, ikh formu i razmery). Pri etom s rostom stepeni napolneniya tochnost` modeli vozrastaet (v otlichie ot bol`shinstva klassicheskikh metodov mekhaniki kompozitov). Osnovnoy aktsent v rabote sdelan na issledovanie takikh strukturnykh faktorov kak sluchaynoe raspolozhenie chastits v matritse (komp`yuternyy sintez plotnykh i sluchaynykh upakovok) razvitie vnutrenney povrezhdennosti perestroyka geometrii kompozitnoy struktury pri deformirovanii i razrushenii. Kniga mozhet byt` poleznoy nauchnym sotrudnikam, zanimayushchimsya problemami strukturno-neodnorodnykh sred, i razrabotchikam novykh kompozitsionnykh materialov. ····· 103615040
für 44.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray Plenochnye techeniya nakhodyat shirokoe primenenie v tekhnologiyakh, pozvolyaya intensifitsirovat` protsessy teplo- i massoobmena. Termokapillyarnyy razryv plenki oznachaet vozniknovenie sukhogo pyatna i rezkoe lokal`noe ukhudshenie teplootdachi. Kak pravilo, razryvu plenki predshestvuet kachestvennaya perestroyka struktury techeniya. V oblasti lokal`nogo nagrevatelya v zavisimosti ot sootnosheniya raskhoda zhidkosti i teplovogo potoka mozhet nablyudat`sya dvumernaya ili trekhmernaya statsionarnaya struktura techeniya. V monografii predstavleny rezul`taty tsikla issledovaniy, svyazannykh s analizom dvumernoy statsionarnoy struktury plenochnogo techeniya pod deystviem gravitatsii s uchetom lokal`nogo nagreva zhidkosti dvizhushchimsya istochnikom tepla. Analiticheskie rezul`taty polucheny v dlinnovolnovom priblizhenii. Issledovana ustoychivost` dvumernogo statsionarnogo rezhima s lokal`nym ostanovom na svobodnoy poverkhnosti po otnosheniyu k vozmushcheniyam, periodicheskim v poperechnom napravlenii. Polucheno vyrazhenie dlya kharakternogo perioda `rivuletov`, khorosho soglasuyushcheesya s eksperimental`nymi dannymi. Na osnove sozdannoy modeli vypolneno chislennoe modelirovanie raspredeleniya parametrov na deformirovannoy poverkhnosti neizotermicheskoy plenki zhidkosti. ····· 103614973
für 61.20€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray V khode izucheniya yavleniy prirody ogromnuyu rol` igraet problema adekvatnosti matematicheskikh modeley, kotorye sozdany dlya ikh opisaniya. Bez ee resheniya prirodnye protsessy effektivno ispol`zovat` na blago chelovecheskoy tsivilizatsii nevozmozhno. V monografii predlagaetsya algoritm postroeniya narastayushchikh so vremenem funktsionalov Lyapunova primenitel`no k lineynym zadacham teorii gidrodinamicheskoy ustoychivosti. On, v chastnosti, pozvolyaet poluchat` konstruktivnye dostatochnye usloviya prakticheskoy lineynoy neustoychivosti. V svoyu ochered`, nastoyashchie usloviya mogut byt` interpretirovany kak chislennyy algoritm, vpervye v istorii nauki postroennyy bez diskretizatsii uravneniy dvizheniya. Eto daet vozmozhnost` ispol`zovat` ikh ne tol`ko dlya proverki adekvatnosti matematicheskikh modeley, no i dlya obespecheniya tochnosti rezul`tatov chislennykh raschetov, kotoraya byla by sopostavima s tochnost`yu rezul`tatov analiticheskikh issledovaniy, i dlya upravleniya evolyutsiey fizicheskikh yavleniy v zhidkostyakh, gazakh i plazme. Kniga budet interesna chitatelyam, spetsializiruyushchimsya v oblastyakh magnitnoy gidrodinamiki, matematicheskoy teorii ustoychivosti, gazogidrodinamiki, matematicheskogo modelirovaniya, differentsial`nykh uravneniy i ikh prilozheniy. ····· 103614873
für 44.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray The author has extensive theoretical and applied background in solving real-life Noise & Vibration problems at various layers of industry. Working with a team of professionals, the company to which Author`s works for, NV Dynamics is both horizontally and vertically involved at various design and post validation processes of many industry. This publication is a culmination of various aspects of real testing of a excavator cabin for its operational performance,failure modes and further on to look into the feasible changes to the cabin structure to bring effective changes for making the cabin more dynamically stable and improve its field worthiness. The author has put his good efforts to bring his vast experience from instrumentation, testing, analysis, FE based estimation and its correlation with test results into its good technical understanding in the form of this publication. Incidentally, this publication happens to be the thesis submitted for the MS degree program which secured the distinction merit for its technical quality and content ····· 103613545
für 53.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray The Fourier transform has become one of the most analytical tools, which is used for the sound intensity analysis and acoustic measurement in many industrial areas. But this method has the limitation that sound sources to measure need to be stationary and it does not provide true characteristics of time varying signals. Instead of the Fourier transform, advanced analysis methods such as the short-time Fourier transform, the Wigner-Ville distribution and the wavelet transform were proposed. These instantaneous spectrum analysis methods can be applied for obtaining the instantaneous intensity of non-stationary signals. This book shows the basic concepts of the Fourier transform and other instantaneous spectrum analysis, and also gives the theory and applications of instantaneous intensity analysis methods including their advantages and disadvantages. The instantaneous structural intensity analysis and other acoustical analysis methods, which provide readers useful techniques for engineering acoustics, are also presented. ····· 103613372· 1 ·· 2 ·· 3 ·· 4 ·· 5 ·
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