6926475975

ba partially fixed, łtt dynamie toading it due to ełastically mounted vt>rating machina* and it* conttraints include baam-iike stłffanart. The thaory yiald* tha aigenvalue* and modal tha pas of tha piata and stiffaners which compromiae tha tyttam. Tha solution itbatad on Galarkin'* method combi nad with u aa of spacłal polynomial seria* presanted by Kantorovich and Kryk>v.

84*1725

Uae of LaGrange Multipliera with Polynomial Serie* for Dynamie Anałyasa of Conatrained Ratę*. Part II: LaGrange Mułtipiier*

G. Rosenhouse and E. Goldfracht Technion-lsrael Inst. of Tech., 32000 Haifa, Israel. J. Sound Vib.,_92_ (1), pp 95-106 (Jan 8. 1984) 4 figs. 2tables, 14 refs

Kay Word*: Plata*, Stiffenad plates

Th* eigenvalue*, modal rfwpes and re«>onte of conttrainad piata*, loadad by yibrating single dagraa of freedom machin ery. ara deriyed. Tha raaults for tha compłete tyttam ara obtainad by appfication of Lagranga equations and Lag rangę multipliers. Tha coafficlantt of th* solution ara found with tha aid of polynomial seria*. Tha w»riant* contidarad ara an unttiffanad and a baam-stiff ened piata.

piata and tha typa of fracture (brittie or ductile) was exam-inad utilizing a high speed photography technigue.

84-1727

A Th ©or© tkał Analysi* of Transient Sound Radiation from a Oamped Circular Platę

A. Akay, M. Tokunaga. and M. Latcha Wayne State Univ.. Detroit. Ml 48202. J. Appl. Mech., Trans. ASME. 51 (1). pp 41-47 (Mar 1984) 4 figs. 25 refs

Kay Words: Plata*. Circular platet, Sound waves, Wave propagation, Impact excitation

A theoretical analytit of transient sound radiation from a clamped circular piata i* given uting a pressure impulsa rasponta method. The yibration reiponta of tha piata to a transient point force it obtainad. The modal pressure impuls* rasponta functions for tha piata ara derived from tha Rayleigh turfaca integral and numerically comroluted with tha modal acceleration radonie of tha piat*. The impuls* re-tponta functions ara ciosały retated to tha moda shapes and tha geometry of tha problem. They relate tha spatial domain to tha temporal do ma i n of tha pressure waves. The pressure impulta rasponta waveforms ara given for a number of piata modes and tha changes in tha waveforms with dittance from tha piata ara shown. Sound radiation due to forcad and free yibrations of tha piata ara discussad.

84*1726

Emiaóon of Strea* Waye* During Fracture

P.S. Theocarisand H.G. Georgiadis The National Technical Univ. of Athens, 5 Heroes of Polytechnion Ave., Athens 624. Greece, J. Sound Vib., .92_(4), pp 517-528 (Feb 22. 1984) 10 figs. 1 table, 24 refs

Kay Word*: Platet, Fracture properties, Stre** waves. Elattic wava*

Emittion of both longitudinal and turfaca (Rayleigh) wavas during fracture of piata* under conditions of piane Kras* and piana ttrain wara studied axparimantally. The non-•Ouiltorated tensile strat* in th* fractured sactton of th* piat* craates an alattic w*ve, which travalt radially along tha piata at tha sound *>e*d. Moraovar, tha high surfac* daforma-tion around tha crack tłp, dua to tha high atrat* concantra-tion thara, propagatat at a turfaca wav* foliowing fracture of this zona, at th* r*spectiv* Rayleigh wev* ipaad with a efreular wavafront. Tha influenca of tha thicknast of tha

84*1728

OaciUatory Instabiłitka Generated in a Double-Pin and Diac Undamped System: A Machaniem of Disc* Brake Squeał

S.W.E. Earlesand M.N.M. Badi

King's College. Strand. London. WC2. UK. IMechE.

Proc.. 1S8 (4). PP 43-50 (1984) 12 figs. 6 refs

Kay Wbrdt: Brakes (motion arresters). Noite generation, Dłtks

A dynamie analytit it presanted of a double-pin and disc system, which it undamped and hat linear characteristic*. A tałf-inducad oscillatory motion i* generated which can bacom* unstable for cartain combinationt of tha system'* paramater*. Oistinct changat from a quiet to a noisy ttat* ara obt*rvad on an *xp*rim*ntal tyttam; th* noisy State region* h*ving a good oorrelatłon with tha instability ragiont shown thaoretłcally. It it concludad that a kinematic eon-ttraint or gaometrically inducad elan of inttabilhy axitti thaoratically which asssntially deseribas th* machaniem of sgueal no i ta generation in ditc-braka*.

Wyszukiwarka

Podobne podstrony:
Blue signs inform of forms whose origin is due to the constructive action of rivers and denudational
The Tertiary, Pleistocene and recent forms due to the destructive action of rivers and denudation pr
28 1992). Due to their smali size, geographic spread, and high transportation costs, these civil wor
DSCN6549 Distribution of visceral leishm aniańs in Europę due to Leish mania don orani donorani and&
Shadowing losses: These losses occurred due to the physical obstacles. (like one building) It is als
8 M. Brzozowski, P. Slrzemecki of Bacillus cereus var. toyoi is ideał be-cause it has an advantage d
18 Anna Lewandowska, Elżbieta Inglot-Brzęk So far, mainly due to the dynamie naturę of the changes t
catalogue36 ■ Motcur a culbuteurs et double echappement. AIIuiiukc par ba*- tcrie et dynamo-p
69432 skanuj0030 (84) _, that s why it is for financial support due to family _from jail, for them,
From the Editor The format of the current issue of the journal is quite unusual due to the fact that
DSC07923 292 M.B. Aberlin (1996) to be due to the fact that it contains iron oxide, which is a ferti
It has to be noted that membranę temperaturę and gases partial pressures change with celi current: w
zywoŠ ŻYWOŚĆ: Środki stylistyczne służące ożywianiu i dynamizowaniu tempa akcji zdarzeń to: 1)
00161 d9d6ad9473daaf2c66ca66aa7e86e2 162 McWilliams constrain the solution by placing an upper bou
00226 ?ff5d9dd7f87bcdc11138bd181d09bc 228 Baxlcy Figurę 7. Esample of Modified Shewhart Control Lar
00317 ?8ddf873a508f535a2304aca8bc776b 320 McCarville & Montgomery units will be rejected due to
00322 ?b73d4dcbb3956a7a53bceacac34fb9 Optimizing Defect Levels and Losses from Gage Errors 325 Figu

więcej podobnych podstron