4 - Memorial University of Newfoundland DAI

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1561 C.G. Salmon and J.E. Johnson, Steel Struelums Design nnd nrhnvior, International Textbook Company, 1971. (571 R. hen and M. Rubinatein, :Dynamic Anal sis by Matrix Dmon,lmsition," Journal o/lhe Evtgineenng Mechanics Biaision, Americas Snciety of Civil Engineen, April 1968. 1.581 K. J. Bathe ana E.L. Wilson, Numerical Methods in Finilc Blcnrcnl An.1. ysts, PrenticeHall, 1976, 1591 T.H.G. Me son, Linear Andyais oJ Thin-wiled Eloslic Slruclnrrr. Jdut Wiley Inc., 1974. [60] SIMQI(E:A Compvlrr Pmpm /or AvtiJiciol Motion Cosrmlion, Dept. of C~vd Eng., M.I.T., Nov. 1976. [61] J.W. Cooiey and J.W. Tukcy 'An Algoritl~m for tho Mnehirlo Cdc~tlb tian of Complex Fourier Scrics," Mollremoliea of Comp~tlnlioas, Vol. 19. No. 90. 1965. 162) L.E. Borgman, "The Spectral Density lor Ocean Wave Wrcer," Hydmulic Eng. Lob., liniu. o/ColiJ., Berkdcy, Calif. I k. I9G5. [63] C.L. Kirk R. Natara'a and J M Teltow, "Doterminiatic m~l lL111dom ~av; Forces on dravity 0"shom Plntforrns," ASMB Palrcr N70- WA/PE-24, ASME Mmting, Dec. 1976. (641 !.A. hchs "On the Theory of Short-Crested Oscillnlor Wm:? CIW- ~ty ~aves> Nolional Bureou oj Stondonis Cix~lnr Lo. 521: IC2, pp. 187-200. [65] J.F. Wilson, Dynamics of Ofshoro Slruduxs. Jahln Wilcy and Sat", Inc., 1984. [661 L.S. M?rple, "A Frequcncy Resol~lion 01 High Reaoltllion Spcclr88m Analysgs Techniques," Pmc. Is1 RADCSpcdrvtm Eslimalion Workrhol,. 1978, pp. 19-35. [67] K.A. Ramney, "Efleclive Mena~zrements for Struet!#ral Dynnmia Testing-Part 1," SounZ and Vilmlion, Vol. 9, No. 11, 1977.
Appendix A Selected Algorithms Tllrec nlgorit1,ma arc included in this appendix: 1. Cook's melhod lor diagonalizalion of a. consi~tent matrix, 2. Ilaubolt's nlprithm, nnd 3. LongucGHiggins and Cokelet smoothing algorithm.
Page 5 and 6:
NOTICE The quallty of this microfor
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I*I Et"" :lbL="*"" k.. bpilmsa7d Di
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Acknowledgements I should like lo t
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Abstract As a result of the increas
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Contents List of Figures xii List o
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4.6.3 Fnbrieatiox of tllc Rcduced M
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A Selected Algoilthma 278 A.1 Diago
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4.5 Member Configuration at level #
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7.21 Dynamic Mode # 6 (Intact Model
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7.49 Typical Measured lnput Wnve Sp
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7.66 hulls fmm Accelerometer A2 due
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D.ll DynamicMode # I (Intact Model)
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List of Tables 4.1 Symbols, Units a
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8.9 Pacent Changes in Resonant Frrq
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List of Symbols d(k) .i(k) A A(L1 1
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autosp~trni density of r(t) cms-spe
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0,1,2
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[@I a Pu. P. P:,," P.. o2(k) instan
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een recorded, then it is beneficial
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Associated with every vibration mod
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Such s model is called a dynamicall
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presenlcd. Chapter 3 contains the t
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al frequcncic. occurred when member
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detwM from the data roeorded (later
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y Duggan d a!. [a]. This study inve
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~~lidity of the results war rompsro
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nic~~~aan:immcdiateiyuseful, they a
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tlncayatem hehavior oftrusswork pla
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Chapter 3 Theoretical Modelling Tll
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3.2 Wave Theories Works by earlier
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F;-RY% WAVE THEORY) 1/20 I "w/Lw DE
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DIRECTION OF WAVE PROPAGATION FIG.
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liero, d and ita wlocity component
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and and a+ "=-. OY = wA~inl~IW(1+ s
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FIG.3.4 ARBITRARILY ORIENTED CYLIND
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~i n long c mtd wave is being conai
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inrther. Ultimately, the resulting
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equcncia and mode shapes, equalion
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Toestablish tho relationship betwee
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Furthermore, from equation (3.56),
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lG.3.6 SIMULATED 3-D AND STICK MODE
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1. priam&tic heam members, 5. sir d
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The equation of motion for each ele
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From tho ~tatic dispiaeemont muita,
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instance, the non-dimensional equal
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functional relationship relating th
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whcre F, 't iinstantanmua force at
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Table 4.1 Symbols, Unit. and Dimens
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thc Buckinghm r-Thmrem (i.c., I2 te
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That is, equations (4.28) and (4.29
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C. Ilence, if the dynamic amplifica
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where (2) is the general gmmdric or
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the prolotype. Damping is dcfincd b
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2 LEVEL # 7 1 28956DO NOTE: ALL DIM
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Mataial= Structural Steel, E = 206.
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LEVEL C6 NOTE: ALL DlMENStONS IN m
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Table 4.5 Relevant Materiel Propert
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FlG.4.9 COMPLETED STRUCTURE. 89
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Since the de& sertioo of the struct
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% FINITE ELEMENT ANALYSIS (COMPUTER
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3 53 I CONTROL RM SECTION A-D. MEZZ
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I I SERVO CONTROLLER MODEL 408.1% j
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LEGEND FI B F2 FREE VlBllTlDN INITI
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5.1.4 Response Circuit Data acquisi
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I ~T.UG~U~E LEGEND: DYIIYT I., 10 A
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the basis upon which the irregular
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then manipulated by the computer ro
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,.. G STRUCTURE IN STILL WATER STRU
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dter every set of hen wave excitati
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To gather spectral information fmm
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is the timelag between silrnplev~l~
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ics, with a lew notable exceptions,
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If bath aides of the dove cguntion
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Conversely, r(1) can be estimated b
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quires ahout N(M + 1) + 9Y1 arithme
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So equation (6.18) become: I, i = C
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At each resonant frequency, the hdl
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6.5 Impact Testing Impact testa wer
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Chapter 7 Theoretical and Experimen
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Table 7.1 Natural Wequeney Comparis
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Therefore, with the natural freluen
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Pi7 Be: kD! SF:& iid id . -5 i#@ Ba
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(i.o., at noder 6, 12, 18, 22 and 2
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tirne dntn;lis reprcsez~lnlioti of
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-CUI~IW~~~ anstmr 9~1sn-mmu3n DL um
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the posilivc and nogntivr peaks. Re
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Table 7.7 X-Direction Results From
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2 GEhEnnlEO FRDM TdE WrllTE hOISE l
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FIG. 7.53 MEASURED INPUT WRVE FROM
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'IUnU133dS 3SIR1 31IHI 9NISn--91 30
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Table 7.9 MEM Damping Estimates fro
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7.2.3 Impact Test Results In Chsptc
Page 252 and 253:
(K 01 0 01- OZ- DE- 0,- OBI (KI 09
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Chapter 8 Discussion of Results In
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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: [Ill M.C. Ilallsm, N.J. Hcaf and L.
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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4 - Memorial University of Newfoundland DAI

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