LABORATORIUM VOOR SCH EEPSCONSTRUCTI ÈS TECHNISCHE HOGESCHOOL - DELFT. RAPPORT Nr. ADDENDUM TO REPORT 168:

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1 LABORATORIUM VOOR SCH EEPSCONSTRUCTI ÈS TECHNISCHE HOGESCHOOL - DELFT RAPPORT Nr. BETREFFENDE SSL 168a ADDENDUM TO REPORT 168: Low cycle fatigue of intersections of bottom longitudinals of tankbarges. By ir. H.G. Scholte & ir. J.H. Vink.

2 SSL 168a As a result of computer handling with measured values during fracture experiments, plots of strain. (EPSILON) with respect to load (BELASTING) are available,. In these plots EPSILON values are scaled up with a factor 10 to get convenient numbers. A number of these plots is collected in this addendum to report 168. Figures 1-17 apply to-specimen A with interrupted brackets. Figures apply to specimen B with through brackets. Specimen C has brackets of the same type as specimen B. Plots of specimen C do not show new ixiformation compared with plots of specimen A and B. The effect of buckling in the longitudinal bulkhead became clear but this is not surprising. So no plots of specimen C are given. The plots in figures 1-25 can help to find out in which places the structure behaves strongly non-linear during compression and tension. It has to be remarked that non linearities in way of a gange can also be caused by non-lineair behavior in other points or partly fracturing elsewhere. The most important indication about cause and effects can be got from the loads at which the effects start. The plots of specimen A are, in this respect, very interesting as they clearly show that fracture has started in the lower part of the welds between brackets and bulkhead at a load of about 200 tf tensile. Total fracture occuned at 4O0 tf. It is clearly shown that gauges 11 and 12 had maximum elongation at 350 tf.; gauges 3H/41-1 at 375 tf tensile load; 7H/8H at 388 tf tensile load while 5H/6H show maximum elongations at the last moments.. 6

3 Y' // / / Specimen type A. Straingange 22 in the control section. PUNT NO (21,26 and 27 have same characte C.) i M E E T P UN T -5. ûü -o. oo EPS I L O N 15 5'O. û O FIG. SC AD 1

4 U rj -J Uj fl - r-) Specimen type A Straingange 17 in the control section PUNT NO IIL.LH t-d, n '-- - r: ç q L_I.) i L_L)t 05 ' M1j (18,23 and 24 have same character) (.Q. 5. 2IJ. í:: FIG. SC AD 2

5 Straingauge 25 in the vicinity ôf longitudinal break has same character) PUNT NO - _5 3. Û O M T EDC i L_I.J Luk r't U -i5.iju > i U" '- U r- 14. UD. UD FIG. SC AD 3

6 I J. L!NT NC 23 Stràingauge 1 in the vicinity of longitudinal break (15 has same character) L) 'IEETFUNT 7 D O -r Û0-2U.Ü O E:FILL T [.0 FIG. Sc AD l.

7 >, aø // h0.00 FUNt NO MEE TEUNT 4000 oh. 00 EF13 I LON. ' J 13 Fi Straingauge 16 in the vicinity of longitudinal break D:iin fin FIG. SC AD 5

8 - - 'S,--- - LI Straingauge 3H in the PUNT NO MEETPUNt -. Ffl H bracket of interrupted type 'C / ) - U n EPS I LCIN 2 5. L'O -E i (J' bo. oc i.?5. fli' FIG. SC AD 6

9 X s L) t/f: / ) L) -.rj UD r -r - r -. U PUNT '' r. Straingauge 4H in the MEETPUNT r 3.UO '.UO ::.i.o '-.JL EFE3ILLIN >i[j' î bracket of iiterrupted type FIG. SC AD 7

10 L) X D D (--t D t-) 7 L.' oc 2á0 7h.00 --I PUNT NEI 9 MEETPUNT 2 R[ I EP5 i LJN > 1 r Straingauge 7H in the bracket of interrupted type f) - 00 i 2 FIG. SC AD B

11 >I Straingauge. 8H in the bracket òf interrupted type C.) C -; /.1/f C.) L, MEPSUPEMEÁJ OF TPESS PNO STHRIN IN LONG1TUDINPL5 FOR NV. DE 5IESBCSC / -'i4.co PUNT N 12. MEETPUNT 2 0 H [3 r) O :o L:rJ.L0' 1u 3,.00 53LO FIG. SC AD 9

12 I / C-) C') C: PUNT N0 25 C' (1 L_J. n '' L E) i: nl L.J L n L). i MEFTPUNT EPCI! (I L_ J L.l' ' Straingauge 11 in the. bracket of interrupted type FIG. Sc AD 10

13 ft:' ç-j /L ç-j 'i31j PUNT. NO 26 V P E TP U N T o EP3ILL1N x1u r-fl J - U L. Straingauge 12 in th bracket öf inter±'upted type T 1. O L) FIG. SC AD 11

14 'k' 'f' 5.00 V PUNTN 20 MEETPUNT 11 TO B 2L Ü0 Li[ EP5iLN 10 Straingauge 5H in the braket of interrupted type 7L 00 FIG. SC AD 12

15 -to. L) 'I Ci PUNT NO 1 -ici oo.00 M E E T P U N T E P S I L ii N H Straingauge 6H in the TO O H bracket of interrupted type 1. r us. FIG. SC AD 13 7

16 X V C) / 1 Straingauge i in the bracket of interrupted type OF STRESS IN L[INGI TUO I NP.LS I 19R._. N V n:: Li L - Li Li _.. :_ Li F'L!NT NO MFIETPUNT 5 D 5 i i E.00 -f EPSILON FIG. Sc AD 11+ io bo. LO i.j. r7;

17 cj Straingauge 2 in the bracket of interrupted type 3/i 2/7'i MODEL T R T I C R L MER5URENIENT DUPING FRRCTURE EXPEPIMENT, PUNT NO,lr '--J 13' 5fl Nl E E T F' U N T 'J D O i. 5G \c: rn L. U (i' L_I -. L...J rfl '-.r-.) u. U L) 2rr 7L.. GO FIG. SC AD 15

18 C:) L) / L. (-'-r Straingauge 9H in the i O J. O - i Û O. O O Oí) MF: INT 5 H. bracket of interrupted trpe -?5. oc -.00 fl,fl OS. 00 SIi LO Ií 125. LO EPSILON IO FIG. SC AD 16

19 X L.) - 0O. 00-7'5.Û /J 1/: /.,//." 'r // PUNT NO METPUNT E P 3 1 L O N J i i Straingauge 10H in the 3 RD O H bracket of interrupted type 1:5 Ç'!fl "-J. J_J U FIG. SC AD 17

20 Iv, L.L -J -i --J -'i PUNT NO M E E T PU N T 'z L u -0. E! O 51 L O N r o p I 0 Specimen type B. Straingauge 26 (21, 22 and 27 same character) Control section FIG. SC AD-18

21 LJ V / PUNT NO M E E T F U N T L.00 E P f L EJ N q u L L) xlj Specimen type B. Straingauge 17 (18, 23 and 2L same character) Viinity of longitudinal br&ak FIG. Sc AD-ig

22 D C) U PUNT NO 3G MFE:TPUNT 1.3 D O Specimen type B. Straingauge 46 (25,13,39,44L.9, 54 and 47 same character) Vicinity of longitudinal break E r? 00 iáñ jjl) -1? 'Thy n- FIG. SC.71-O3-AD-20

23 --- Specimen type B. Straingauge14 (15,LfO43,L8,L5,5o and 53 same character) RUNT NO 22 Vibinity of longitudinal break -OO.ÛO -'1C. DO MEE:TUNT O.00 E P 5.1 L 1i N [j O :;b.00 bo.00 i - LU r:- FIG. Sc AD-21

24 -J r.) : j ri L.) /1\ i Lj O O i: --iis.00 -o.co _L4[ (LÜO Efl3JL[')N >iu FIG. SC AD-22 Specimen type B. Fracture experiment Straingauge 16 (55 same character) C..) L.) RUNT NO L3 Vicinity of longitudinal break NIEL TPUNT i :3 L.. nc G U. O O u or:

25 e:) C C') r. - Ti r; N1O[J.EL B. FHPTUHE EX' -tf5lj t4.00 REH IMENT. PUNT NO ME ETEUN T L.Û0 E. P S L [3 N Lfl5 Specimen type B. Straingauge 41 (51,42 and 52 same character) Vicinity of longitudinal break -S4.. LO ), i ci i..j44 fl -u rc FIG. Sc AD-23

26 r,-, C-.: U I,) Specimen type B. U. c;j Straingauge 3H in Bracket '--J Ti 1-2. r -i PUNT NO METPUNT. I 16Û0. 3 i FW E - H (5H, 9H and II same character) (group of fig E F' T LON i OU Li 3 Q U same character) FIG. SC AD-214

27 / j' Specimen type B. Straingauge '4H in bracket RUNT NO (6H, 10H and 12 same character) (group of fig. 24; same character) -'LOO MELTPUNT i. FO O H i ) r (Ii' (T i LON FIG. SC AD-25

'NOTAS"CRITICAS PARA UNA TEDRIA DE M BUROCRACIA ESTATAL * Oscar Oszlak

'NOTASCRITICAS PARA UNA TEDRIA DE M BUROCRACIA ESTATAL * Oscar Oszlak OVí "^Ox^ OqAÍ"^ Dcument SD-11 \ 'NOTAS"CRTCAS PARA UNA TEDRA DE M BUROCRACA ESTATAL * Oscr Oszlk * El presente dcument que se reprduce pr us exclusv de ls prtcpntes de curss de Prrms de Cpctcón, se h