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4 - Memorial University of Newfoundland DAI

4 - Memorial University of Newfoundland DAI

4 - Memorial University of Newfoundland

  • Page 5 and 6: NOTICE The quallty of this microfor
  • Page 7 and 8: I*I Et"" :lbL="*"" k.. bpilmsa7d Di
  • Page 9 and 10: Acknowledgements I should like lo t
  • Page 11 and 12: Abstract As a result of the increas
  • Page 13 and 14: Contents List of Figures xii List o
  • Page 15 and 16: 4.6.3 Fnbrieatiox of tllc Rcduced M
  • Page 17 and 18: A Selected Algoilthma 278 A.1 Diago
  • Page 19 and 20: 4.5 Member Configuration at level #
  • Page 21 and 22: 7.21 Dynamic Mode # 6 (Intact Model
  • Page 23 and 24: 7.49 Typical Measured lnput Wnve Sp
  • Page 25 and 26: 7.66 hulls fmm Accelerometer A2 due
  • Page 27 and 28: D.ll DynamicMode # I (Intact Model)
  • Page 29 and 30: List of Tables 4.1 Symbols, Units a
  • Page 31 and 32: 8.9 Pacent Changes in Resonant Frrq
  • Page 33 and 34: List of Symbols d(k) .i(k) A A(L1 1
  • Page 35 and 36: autosp~trni density of r(t) cms-spe
  • Page 37 and 38: 0,1,2
  • Page 39 and 40: [@I a Pu. P. P:,," P.. o2(k) instan
  • Page 41 and 42: een recorded, then it is beneficial
  • Page 43: Associated with every vibration mod
  • Page 46 and 47: Such s model is called a dynamicall
  • Page 48 and 49: presenlcd. Chapter 3 contains the t
  • Page 50 and 51: al frequcncic. occurred when member
  • Page 52 and 53:

    detwM from the data roeorded (later

  • Page 54 and 55:

    y Duggan d a!. [a]. This study inve

  • Page 56 and 57:

    ~~lidity of the results war rompsro

  • Page 58 and 59:

    nic~~~aan:immcdiateiyuseful, they a

  • Page 60 and 61:

    tlncayatem hehavior oftrusswork pla

  • Page 62 and 63:

    Chapter 3 Theoretical Modelling Tll

  • Page 64 and 65:

    3.2 Wave Theories Works by earlier

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    F;-RY% WAVE THEORY) 1/20 I "w/Lw DE

  • Page 68 and 69:

    DIRECTION OF WAVE PROPAGATION FIG.

  • Page 70 and 71:

    liero, d and ita wlocity component

  • Page 72 and 73:

    and and a+ "=-. OY = wA~inl~IW(1+ s

  • Page 74 and 75:

    FIG.3.4 ARBITRARILY ORIENTED CYLIND

  • Page 76 and 77:

    ~i n long c mtd wave is being conai

  • Page 78 and 79:

    inrther. Ultimately, the resulting

  • Page 80 and 81:

    equcncia and mode shapes, equalion

  • Page 82 and 83:

    Toestablish tho relationship betwee

  • Page 84 and 85:

    Furthermore, from equation (3.56),

  • Page 86 and 87:

    lG.3.6 SIMULATED 3-D AND STICK MODE

  • Page 88:

    1. priam&tic heam members, 5. sir d

  • Page 92 and 93:

    The equation of motion for each ele

  • Page 94:

    From tho ~tatic dispiaeemont muita,

  • Page 97 and 98:

    instance, the non-dimensional equal

  • Page 99 and 100:

    functional relationship relating th

  • Page 101 and 102:

    whcre F, 't iinstantanmua force at

  • Page 103 and 104:

    Table 4.1 Symbols, Unit. and Dimens

  • Page 105 and 106:

    thc Buckinghm r-Thmrem (i.c., I2 te

  • Page 107 and 108:

    That is, equations (4.28) and (4.29

  • Page 109 and 110:

    C. Ilence, if the dynamic amplifica

  • Page 111 and 112:

    where (2) is the general gmmdric or

  • Page 113 and 114:

    the prolotype. Damping is dcfincd b

  • Page 115 and 116:

    2 LEVEL # 7 1 28956DO NOTE: ALL DIM

  • Page 117:

    Mataial= Structural Steel, E = 206.

  • Page 122 and 123:

    LEVEL C6 NOTE: ALL DlMENStONS IN m

  • Page 124 and 125:

    Table 4.5 Relevant Materiel Propert

  • Page 128 and 129:

    FlG.4.9 COMPLETED STRUCTURE. 89

  • Page 132 and 133:

    Since the de& sertioo of the struct

  • Page 134 and 135:

    % FINITE ELEMENT ANALYSIS (COMPUTER

  • Page 136 and 137:

    3 53 I CONTROL RM SECTION A-D. MEZZ

  • Page 139 and 140:

    I I SERVO CONTROLLER MODEL 408.1% j

  • Page 141 and 142:

    LEGEND FI B F2 FREE VlBllTlDN INITI

  • Page 144 and 145:

    5.1.4 Response Circuit Data acquisi

  • Page 146 and 147:

    I ~T.UG~U~E LEGEND: DYIIYT I., 10 A

  • Page 150 and 151:

    the basis upon which the irregular

  • Page 152 and 153:

    then manipulated by the computer ro

  • Page 154 and 155:

    ,.. G STRUCTURE IN STILL WATER STRU

  • Page 156 and 157:

    dter every set of hen wave excitati

  • Page 158 and 159:

    To gather spectral information fmm

  • Page 160 and 161:

    is the timelag between silrnplev~l~

  • Page 162 and 163:

    ics, with a lew notable exceptions,

  • Page 164 and 165:

    If bath aides of the dove cguntion

  • Page 166 and 167:

    Conversely, r(1) can be estimated b

  • Page 168 and 169:

    quires ahout N(M + 1) + 9Y1 arithme

  • Page 170 and 171:

    So equation (6.18) become: I, i = C

  • Page 172 and 173:

    At each resonant frequency, the hdl

  • Page 176:

    6.5 Impact Testing Impact testa wer

  • Page 179 and 180:

    Chapter 7 Theoretical and Experimen

  • Page 181 and 182:

    Table 7.1 Natural Wequeney Comparis

  • Page 188:

    Therefore, with the natural freluen

  • Page 199:

    Pi7 Be: kD! SF:& iid id . -5 i#@ Ba

  • Page 204:

    (i.o., at noder 6, 12, 18, 22 and 2

  • Page 208:

    tirne dntn;lis reprcsez~lnlioti of

  • Page 214:

    -CUI~IW~~~ anstmr 9~1sn-mmu3n DL um

  • Page 218:

    the posilivc and nogntivr peaks. Re

  • Page 224 and 225:

    Table 7.7 X-Direction Results From

  • Page 226:

    2 GEhEnnlEO FRDM TdE WrllTE hOISE l

  • Page 230 and 231:

    FIG. 7.53 MEASURED INPUT WRVE FROM

  • Page 236:

    'IUnU133dS 3SIR1 31IHI 9NISn--91 30

  • Page 244 and 245:

    Table 7.9 MEM Damping Estimates fro

  • Page 246:

    7.2.3 Impact Test Results In Chsptc

  • Page 252 and 253:

    (K 01 0 01- OZ- DE- 0,- OBI (KI 09

  • Page 257 and 258:

    Chapter 8 Discussion of Results In

  • Page 260 and 261:

    of rnemhcr removal can he visually

  • Page 263 and 264:

    emoved is a cancellation offecl, an

  • Page 265 and 266:

    Force Variation Along the Jacket. P

  • Page 267:

    fi~t on the lower rrequency end of

  • Page 271 and 272:

    pond approximately to thasc which c

  • Page 273 and 274:

    'Ikble 8.1 Measured Resonant Rsquen

  • Page 275 and 276:

    Table 8.6 Measured Resonant Wequenc

  • Page 277 and 278:

    After a close look at the measured

  • Page 279 and 280:

    Table 8.11 Percent Changes in Reson

  • Page 281 and 282:

    Table 8.16 Percent Changes in Reson

  • Page 283:

    apprmiably. Since the tmnsa of the

  • Page 286 and 287:

    '*~+12 \5 \8 h4 h7 $0 FREOUENCY IHz

  • Page 288 and 289:

    8.2.4 Impact Test Results 'l'incobj

  • Page 293 and 294:

    I able 8.20 Comparison of the Reson

  • Page 295 and 296:

    'Phc invalidity of thc lumped mass

  • Page 297 and 298:

    Chapter 9 Concluding Remarks and Re

  • Page 299 and 300:

    general agreement. 5. An investigat

  • Page 301 and 302:

    mode, br example, might have been e

  • Page 303 and 304:

    References K I'o,lnt~n~. 'A Sludy o

  • Page 305 and 306:

    [21] .I.K. Vandiver, "Structo~ral D

  • Page 307 and 308:

    1431 D.J. Kartewcg and G. d-Vria "O

  • Page 309 and 310:

    1671 I..S. Marplo, "A NCW Autorepes

  • Page 311 and 312:

    (111 J. Zhou "Ocean Wave Simulation

  • Page 313 and 314:

    [Ill M.C. Ilallsm, N.J. Hcaf and L.

  • Page 315 and 316:

    Appendix A Selected Algorithms Tllr

  • Page 317 and 318:

    - M = the total mass of the slructu

  • Page 319 and 320:

    Suhrtituting qualion (A.5) in equal

  • Page 321 and 322:

    ..3 Longuet-Higgins and Cokelet Smo

  • Page 323 and 324:

    Appendix B Sample Calculations Typi

  • Page 325 and 326:

    The dcnsity of ABS plsstic (p.,,) i

  • Page 327:

    C.l Calibration and Instrumentation

  • Page 330:

    D.l Mode Shape (Members 70 and 68 R

  • Page 340 and 341:

    D.2 Results for an Impact Initiated

  • Page 343:

    i W 4 P Li I 2: 5: E B '5 2- d :" i

  • Page 347:

    oa m 01 o or- QZ- oe- om Q Z ~ oo a

  • Page 353:

    D.3 MEM Damping Estimates for the D

  • Page 357:

    Table D.4 MEM Damping Estimate. fro

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