By Ralph Smith

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The textual content can be utilized because the foundation for a graduate direction in any of a number of disciplines which are excited about shrewdpermanent fabric modeling, together with physics, fabrics technology, electromechanical layout, keep an eye on platforms, and utilized arithmetic. .. [T]his well-written and rigorous textual content should be beneficial for a person drawn to particular clever fabrics in addition to common modeling and keep watch over of smart-material habit.

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4 zeigt eine derartige Leitung mit Schieber am Ende. t. 2 Beispiele 39 p = const (inkompressibles Fluid), h 1 = const (keine Spiegelabsenkung), A o » Al' Ao » A 2 , Kein Druckwelleneinfluß und Lineares Schließgesetz Ver) bzw. v 2 (r) (s. 3): v2 = ~2ghl (1- r) mit I-I r = _ _0 L1t Gesucht: Druckstoß . (P2 - Pa )max Lösung: Die BERNOULLI-Gl. 10) Der Term v/12 ist nach dem linearen Schließgesetz (s. 3) zu behandeln. 11 ) S2 a Der Term J~ds kann wie folgt unter Einbeziehung der Stelle (0'), s. 4, umgeformt werden: (0) wobei fav ds = 0 ist, da innerhalb des Flüssigkeitstanks v 0 = 0 mls ist.

Diese Bauart zeichnet sich dadurch aus, daß bei Ausfall des Betriebsöldruckes das vorhandene Betriebswasser den automatischen Schluß der Armatur bewerkstelligt (Selbstschließvorgang). 6 Glockenringschieber, Werkbild Ateliers des Charmilles Gegeben: PI = 3,0 bar H geo = 750 m L dR s PF EF ER g Druck an der oberen Refexionsstelle RS (s. 1), Geodätische Fallhöhe zwischen oberer und unterer Reflexionsstelle RS, Fallrohr-Leitungslänge, = 1700 m Innendurchmesser des Fallrohres, = 1,800 m Wandstärke des Fallrohres, = 0,015 m 3 Fluiddichte, = 1000 kg/m = 1864 N/mm2 Elastizitätsmodul des Fluids, = 210000 N/mm2 Elastizitätsmodul des Fallrohrs und = 9,81 rnIs 2 Fallbeschleunigung.

H2 h2a ~h2 · . WIr . d favdzH Iermit - f -v2 - dz- -'v-LgflJ - - fdz- at at ~t o 0 ~ '\jL g fl 2 ~t 0 h2 . Eine kürzere Herleitung ist gegeben durch: S2a f~ds o at h/ a h2a h/ a ~h2 = f~dz = f~dz + f~dz = __ '\j_Lbg_flJJ 0 at 0 at h2 at ~t fdz 0 =- ~ 'v Lgfl2 h . ~t 2 Man beachte, daß die Steigung av / at der gegebenen Funktion v 2 (t) durch h/ - a ~ 2 gh 2 / ~t wiedergegeben und das Integral f~ dz = 0 wegen v = 0 mls h} at ist. 2 Beispiele P2(t)-Pa =gh[I_(I_t-tO )2]+ P 1 l1t ~2ghl h l1t . 7) 2 Der Maximalwert der in GI.

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