WOODS HOLE OCEANOGRAPHIC INSTITUTION Woods Hole, Massachusetts EXO OSLO ) (oan ASTI Cs Olt, “D ¥ « LES gel ka 2 oot PAL Joa re tha fie sty ONS INT ae 4 , rou?) Te N COMSTD ~~ sty —. “-—™ ~~ ‘ ; : | s C . BA) E NS) ss : f maa? ¢ - , eo Ee (r aC f S -] = Rs et! Aso fs a eo oop = ne Pe z ° ry ° ° ‘J A, GH Lae, Loita a 8 To ann wa teria & fii kate ofa Taking advantage of the mass of experimental data availad 2 - ; . aunt MERDG, ‘cumvasi werevdevecoced relating the rahe ol ne forsndentined sustressarecvived) undaas. fabri caved huinioehereso-Nith these, curves: avaidable, it Ws possible: tovdeveion prediction type curves loc) otalseGine => (0 is) Ss as fe) oO ©) =) fs 9 0 4 Q Q D ae) ap Oy io} im) uS' ct Dh bre 2 a} ie) is) Gi ru oO i Gr. hy S w Sal viineator i € oo wy S o } 7) x 3 (erp w 3) fen 1) ne ) ©) ce ae iy per) pa vu) » Ellowahle deviations in scherici thickness or weignt-to-displacement ratio Gfd)to A. pya ChOSSmpNoutune: Prom tielsuha ly: of (CRT wes At Ss SSesi ole to develop curves relating collapse depth Lo WD ratio ROP a piven. or suned A, This game procedure was utilized herein for studying ALVIN. Fig 1 ) factor curve: bused von 2-120) —)if=150 (stecks. Ee shows the empirical reduect (Strain hardening materfals). The curves shown are the loser bound envelopes of experimenvs: results from machined, stress relievea an non stress relieved models. It should be noted that the non stress relieved models were fatsicated frem pressed: petels this they contain a Large Of Lesaaial owen consigerable number or seam welds and as 5 7 ‘ tS uo J is a 3) an as SUReSSes sin) Pigures <2and) 3, ane presented atypical ostress -surain (curves icuby. hacvox czerves, fer vwitanium. ‘ULilizine’ the cusves of + 5 be developed (2s Gescribsd [Rs Q fe) ns Figures 1,:-2, and 3 the curve cf Figur collapse depth, Finally the curves ral Pplottncetromgthe\ennver cn racine...) amet he lot hore Vries carves for WN ai o ne a An ae byt fie me ibd aaa bes ‘Nee Se sp, | Stee me fs : Nr f! Oa Ne 4 "”, et wt ils i ott soneniani sf hyde sda ie a baal? ; 1h On pevebit bi it ‘nih toler, ‘Gotwnts ef ina rac wh ay ‘sina | 10 ‘sndviion wid = “Prsaatiteddys 8 bsadincey | a \ Hh) . ' ee, ne es oldhs seyinl SP euvaa Be whirl ane cant aabhions aro ie a - . ay 7 15 aE otdert\y a ob sah S)\tQx BON 1:9 aa f i a a en _ - Poo ee ee? oetec to [oe = ; y ay _ : 2A _ | 7 PGE CATV EN ot tity 9h WP SH Noes hd mae erebemortiy, es i bail biaded ae ab Oeewelt ba Bon aes AV TSU Mt SOel BOLLS saber iesdauie hog ! ’ a Gavia 40 OL Ot) ork neal s aorado Silt ~ tele broitiecn gitiyat a Nh eva air caoide conn y i gas span i emit inl te me ae a Ms ot 2iatt! Solas od biuoets Vee. sete: Mays. ial : | ‘* nls “ve wads: au j Keil te Se i- e aay oa ; ya Mat wi L; icon spite Syisi Cnn bdo, «ina ret atin oe nevaee Ati ath, le! et fe. banka ys) idewaes : ae R “hue aot ce ; Ge 79 wt “aul tray MAD Le WI ceawe " tadat per 7 Oe ag $2 @)) bogeipved af =H eoumtl Jo suse of E ting = vt 9 Dy " ii a ee me ae sation David Mau’: 0! aveewer i f fe ninten anki i ie | grease Th «wt (6 Payoh eel! tate, eran Abit Fe ‘Sectubig ie bey eno. . r ' | | sues %! Tepes eb Srae fon Ih ia payveqTis eats ya | mi | oot surat ‘ ate “og Mot ties wed : of) 44s Fe ' : oe Since the ALVIN rll cont nine aesilisle vquavcniall geam,weld, aswell -esiwelds for wht four view ports ana hatch and: since the hull will te hot formed in tse hemispherical pieces, the as-fabricated hall shoulda perform at least as weli at the other as-fahricated hemispheres, ane probablyias, well as the stress, relieved “Wemisnheres. of rignure 1. Further it is nossible, depending upon the titanium alloy selected ete, that the shuld wad ce isincss) celcveds Thus ‘the best ensineering judgment of the strengtn of the Titanium hull for ALVIN, is that the failure should te defined somewhere betwee =) the limits of the strese relieved and the machined curve. (Fig 5). Further Figure 5 is bassi on an assumed ZN Wot Wiis eulvcniais probably SA tl AR SIO Re a conservative value. fowever, it was selected because it is felt that the distortions due tc widing the titanium sphere will bs greater than the measured distortion: vbtr zined from welded. HY¥-LOS spheres. Accordingly it is felt that the folfoving minimum collapse pressures and Wy ratios should be attaiszable*: Yield Strength Coltapse Depth Wp -basic Wiy-corrected Payload psi Ft. - inerease i Lbs 100, 000 38,200 0.550 0.605 1975 110,000 18,900 0.524 0.576 2.300 120,000 18,300 0.502 O.'552 2550 *It should be noted thai a similar technique ne used to predict th 18 collapse depth for the W-100 ALVIN sphere. A depth of Ne abe oe in 16,000 ft. was predicteé based on a meximnum roneuned AN of 0.050 ~ v for 7 hit: yen anil ney toda nas tree ee yt | | ; ; fiat hesea aden west ses beeatnl ol 4 | “savored buteutsten, ro Tose ani Pa thoy x iE ry . cad os Ta. mere clays het ey es Peery ath a Rares wie pfatoican MOLD y one ects OP ey rita ty “get Hagan dete edgy a " ap aN | . -Auyhdtet acivita oF FER PG! este salt i dinad ty aad Le 4 ignotse “ond 30 Srey Lait, cetadiatre seu re a nem ed exbdysnne hanites od Divot’ oselcarh Ay gale mh vitae aa he Aé ght), -oytie Eechiies GY has Netattw: arty, ete or m) rt SF Ph hdd = de het hE EXE Fo: ES. “bowie: caro: ocak nt @ orcery OF th | ~ a | . dott ow ie at Didese! Lealpatoy wie ae preyed, aEDS ORE ) pads, ‘eet » “on tnt precise parr jn dager arifi Les fi wb vy | ABaoand: eagheitae ep iol Dev oat): ante iM avant Beni sags nw ‘nar iil 4 aealtag pi wit (on wl? eet ian sontaibasin oth races ol’ wat defmted ‘ihpawrid Be cn : - gt ing ; ‘ag 7 ee OT al. . on af _ 20%" re Foibunit od lee cow sup heaifie aD athaa’ Po Aad Badon/‘ad ‘Arwen gicseetaoaiie to Wyeh A peewee MIVA OOLAYE at? cod dSqgob: sa i aot ENG. Fo Cy Detuswoe sicibian 2996 pang a zn are of The basic WAp ravio is for the basic hull without penetrations. For the existing HY-102 4LVIN sphere, the inserts for the renetrations SS Se acyp inensased. the ibe O55 AG WGbimmbePeecent. Accordingly, oN the corrected wld ratic shown anove reflects a 11 percent increase on the basic Vy ratio. It is noted that optimization of the hull inserts 7s will provably result ina slightly lighter structure than shown. The predictions snown above indicate that from a structural standpoint it is possibis to attain an 18,000 ft collapse depth with payload increase within the general range of interest. Further, since the physical size of ths hull (6"-15" C.D) and the predicted collapse ~ < (0s) i) he ra rw) (P) po co ree ) =) depth are within the capabilities of existing facilities from collapse tests of a2 full scale hull. Additional verification of + the adequacy of the prediction curves will be obtained from tests of three titanium sphere mcdels currently under construction, scheduled for testing in FY69. “2 stk aw Pan “enh 138 BU Batt: oad it €h olies Ay Ty ie Engr ors Tote] ey OD Beene By ety a tga i Wei tM Ale ti hin AW abit « oe 4 oa yas AL | , hey per poy piu iear Vie Poe elt eed {nid so 3a | Giubith Lud att 36 Galina ihhie data baled best lied gW'ul ion (rene eit @ Yeah toagil lings tae ey stun 2 lead) th Seale B went, de wobiny avedo ots pahsudterts ot) # Hat dacs otanilow (1 Ge bt as ciate jiheng of ghjitke SONTH .g PATE Sar tenang):) Tot GTi ad aml) Pew aieetones Slail ties M7 | 4) Way Pew? OS PA} Link coh’ Uae Pa) Lee! Hop~eon fi Tw 4 PH i fy Ag OFaT =) Woy LJ igi5 "ans ni te ar) Gaylac ly os [igen wet | ft aia bt mi / Tr Me ss Gage? ei line eso koege Ta pollneit haa ita: Leh Bh ge an 3 v.050 (101) 2q wed wirpah le Ve g.i,02 ane) pisen } Aw hu Ye tus tabbe ay Sad .D Yael initiate soll i wer f rar ir ag sialon e1e f4 hie S >) [oA ia’) iz 83 “< “e — a) fol oO 45 (e) c+ a) Fy ao) Ls} Oo C3 Lr} oo 3 16} — & + We ie} a ~~ to assess window configurations (internal diameter to thickness r: for various operating depths. The results of these studies will te used as the bases for evaluating and/or redesigning the windows. 10 Shi! 202 biuts +S Oieli | | tye efitnererio et4) Goble Lan hong, Coma 7 inatnat) eas hhetic Pie vole | Bee ey SPOUT CHE @ Wt fesiavecta? Pent alt Sees ‘Thibay @T a ltyed. pebrireye Se oe OTHER STRUCTURAL CHANG&S The insert at tke access hatch ean be optimized by utilizing the same procedure as developed for the view port inserts. The NSRDC has programmed Gifford's finite element analysis for these inserts. Unfortu- nately this analysis reqiires about one week set-up time for dividing the insert into the necessary elements, obtaining coordinates for the elements, etc, prior to solving the problem on the computer. Nowever, when the Titanium sphere project is officially initiated this computer program will be utilized for optimization of all hull inserts. Electrical pen:irator fittings compatable with the AUTESC vehicle (ace eR rE ES A CE AST SESE SED will be utilized. This entails providing opening for 23 fittings rather errr ser SE EI STE ES EN CED than the 12 now on ALVIN. This does not include, at this time, any necessary structural changes to the penetrators themselves to account for thicker inserts, desper operating depths, etc. Preliminary investigations indicate that the added deflections attendant with the use cf titanium in the pressure sphere should not Gh L | ec | cause binding of the retzase mechanism. However some redesign nay b= Dutta necessary in the area of the penetration for the release mechanism shaft. welsh tuhehon Becaramocs (aes bauer ae ey, (a ar Ga pate Af bry me RCs lev for ‘ a egal z Nseve hall Tests palllecstiice rough“ 3 times as pauch 11 oil yr T SP hs) feuathiduw od -ate® dated eadgos. atl #5 ‘rand ant wil VOAS etl adaont Soy eiiv ole 107 Beye lovme: Os wchuvonly witha ri sly ecall araunint wi Aa ‘foow dawtole gici'tie bw TL henry ashe hy 167. G intoodeie ena duos cethiot Gheglara alle efit n,) amlaatt “oy Fuse cane ale cramer a? oak Ji9ma£ a Mivol’ wesc Gl thw Poliforg adi yatyToa-at sotiy are gave or iyean i hy | ear, fatebtio el voeljeu ecetce mulae lt add elton Llud ifs Ie polimetettys eettealiise wt li iw. Ga erat soge a sur aa) HY buena jal ioe CAAL 1 fol pS sSietoota i - ey SS ge ne sadeuy mea lael) Ef 407 seiner marbiyord aliaine eH bos (i Lry' ad i i CEng — i a I 4,000 @friy Je «: Lint Yow Yanb Gili VIA i vow Si ard tron re ion ‘Apa tart.! iN Inga GF7 56), RORICKS Lerutourd & Yess sda. atipad yabiersge 3 pob |, hieens revokes enplraoltel tobaea edd seta olin} anolieg iecevat qabetattert A don Bluste eiedas eruecni2? ed) Ad fitet?t Yo ony a? di two inabam Soan? wt Tete “6 NDR 1° hwy eae Veo iinataan @v.olor Ail ‘hoe thn fel eal epereast ettate eels (her eangTay ate tO) aad eimoq: aly TO mote a0 Ae eae \ S wey aa\t | res Sarre MY naire erual \\sd ATA pina fe . . 4 ‘ ea v x * ovo war tan\h Ns . 1 TEST PROGRAM It is will be cles sed as by NAVSHIPS 0900-028-2010 (1 Juiy 1967). specified a model model the more det the structural testing requirements of a Category 3 it. is recommenied that a full scale model be hulls should te constructed and the one with tolerances (out-of svnericity, etc) should be selected esults of this test should provide a minimun remaining sphere, to the collapse.tests on the sphere, a proof test on conjectural whether the titanium allcy a Category 2 or a Lest to des selected for ALVIN Category 3 Material as specified truction is necessary, and wees ee Oe the larger ailed the evaluation. Thus e full scale model would - Further a full scale model Therefore coat fee material. th tested to destruction. e SU) protouype the worst dinensional ones WaRine dere collapse pres sure for the ay an ae sees Gas ala also verify the design » ,dhetiy goinlee ral Lota! ont ; 4 an ' > i340: 4 ’ “oo1) » Rie ie 4 nial et if ; ar { : “ray AR ig OA eae aii ae ‘i (ala aa ; 4 J hi bai at ae y a. i'tole on ha praea ie ' = a Bioode eh Onl i> ma) Ss ie vete?d ev efAt Yo gtleagg ie ot) oF o wootes ila beset os at COST ESTIMATE The total cost estimate for building, testing and certifying a cee ae Titanium pressure sphere for ALVIN is approximately 1.é million dollars. ww This value was arrived at as follows: Peerage Material (2 -- spheres) fo OXHO) Mos). uy *6/lbd. 144,000 a Fabrication (2 spheres) 14,000 its at $50/1b 700,000 ee Instr, Test, Analysis, Report (Spheres) 125,000.45 4 $969 , 000 U5) >} oe i t ie ie a — PAMELA FWOA wnlieus ENE 40k ot edivew dere Latod aff oe i orga Rb CVO Pole reth ee Seay onlipl tt ‘dawrhl6$ 26 te ove Baw shag (AO. Ja etl OOO he Latrobe" 3) Tadrotat '. alae : i AS, we Aw 15 | i j Piss rilgt (nay i lyey, droge? ge liylowAs Jeee ) efarnt CONCLUSIONS 1. An 18,090 ft collapse depth with a miniimun of 1975 pound payload A en mene ee ae ~ “ocean! increase is possible for a titanium sphere of the same outside dimen- sions as ALVIN. The following basic thicknesses are required for the yield strengths shown: a. 100,000 psi yield - 1.81 inches eo Gea STScI Tee Ss +t aps. 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