1、NASA TN D-360 TECHNICAL NOTE 0-360 BENi)ING AND COMPRESSION TESTS OF PRESSURJZED RING-STIFFENED CY LJNDERS By Marvin B. Dow and James P. Peterson Langley Research Center Langley Field, Va. NATIONAL AERONAUTICS AND SPACE ADMINISTRATION WASHINGTON April 1960 (YASA-TE-P-3tC) EEIPDIIG Ab0 CC%EEZSSXOI N8
2、9-7G652 lfSTS CP EBESSOGIZEC RING-SllIEEkEQ CPLIICEti.5 (BASA. Laagley and, no difficulty was experienced with the skin splices. However, in the compression tests, buckling sometimes seemed to emanate from the vicinity of a skin splice which consisted of a lap joint held together by a double row of
3、rivets and Araldite cement. One of the two sections of skin comprising the joint was joggled in the early tests as is often done to yrovide a neater seam. These seams were iater reinforced for the compression-test cylinders with the use of several layers of fiber-glass fabric bonded t.o the cylinder
4、 a layer at, a time in an attempt to prevent the occurrence of buckling adjacent to seams. In addition, 4 .743 .788 .832 .e77 ,922 .029 .119 . a9 .a99 .393 ,480 ,570 .660 .TO5 .no ,795 ,841 ,886 ,931 .976 ,031 .129 ,227 ,325 ,423 ,521 .619 ,717 .761 .eo5 .849 .892 ,956 ,980 ,028 .140 .251 .362 .474
5、.585 .6% .a07 ,919 1.030 1.086 1.141 1.197 1.253 1.309 .023 .111 .I93 .279 .368 .457 .545 ,634 ,723 ,812 .e56 .go1 .945 .989 1.034 1.078 *Longitudinal dl splices consist of lap joints of joggled construction with fiber-glass reinforcement. bLongitudinal wall splices consist of lap joints constructed
6、 vithout joggling wall. OR _- Et 0.542 ,383 ,405 .428 ,455 ,483 ,503 ,527 .541 .554 .585 ,585 .586 .297 .356 .411 .451 .456 .493 .497 ,508 .523 .528 .539 .538 .547 ,552 ,562 .324 .421 ,429 .460 .4% .517 .538 .570 .571 ,577 ,585 ,583 ,598 ,604 .164 .246 ,304 .356 .595 ,428 .457 ,486 ,517 .538 .548 .5
7、54 .555 .558 ,559 ,246 .306 ,353 .393 .424 .448 .457 .494 .517 .538 .550 .557 .571 .579 .578 .563 6 . Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-TABU I.- DIMENSIONS AND TEST RESULTS OF COMPRESSION CYLINDERS - Concluded 2ylinder 2c 3A 3B 3c 4A 4B
8、 t, in. 0.0223 .0194 .01* .OlB * 0327 .0328 R t - 2 R - 3 -493 .e46 .246 .246 .97 987 Splice details Ce s t length, bays 0.465 .554 .263 .381 .499 .616 .734 .911 .027 .144 .262 .379 .496 .613 - 730 .848 . go6 -965 .145 .852 1.023 1.141 .027 .143 .259 .376 .492 .608 .724 .840 -898 -957 1.015 1.073 1.
9、131 1.082 .669 .421 aR Et 0.518 - 530 .433 .479 .512 .549 .556 .560 .561 .353 .449 .482 .518 - 554 -578 -600 .614 .615 .613 .615 .617 * 530 .616 -521 .407 .459 .506 -532 .539 .558 .567 .565 -566 .567 -568 .573 .617 .553 bLongitudinsl wall splices consist of lap joints constructed CLongitudinal wall
10、splices consist of lap joints with fiber- without joggling wall. glass reirforceEent. Lap joints were constructed without joggling wall. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-14 TABLE 11.- DIMENSIONS AND TEST RESULTS OF BENDING CYLINDERS e
11、Cylinder t, in. o .0191 .0183 .0220 .0211 .0197 E t 1 R - 0.987 .9m .9a7 .493 .246 Test length, bays PR2 Ek 1 0 .060 .121 .181 .241 .302 .362 .423 .483 ,543 .603 .664 0 .081 .147 .213 .279 .345 .411 0 .046 .o92 .I37 .182 .228 .274 .319 .364 ,410 .456 .501 .547 .593 .638 .684 .730 0 .050 .099 .149 .1
12、98 .248 .297 .347 .396 .495 .057 0 .113 .169 .226 .282 .339 .395 .452 .508 .565 .678 .790 .903 Buckling 0.359 .450 .502 .543 .575 .589 .598 .608 .628 ,653 .676 .696 .444 ,510 .540 .565 .584 .592 .618 .410 ,483 .539 .561 .589 ,606 ,626 .641 .653 .669 .681 .688 .701 .711 .725 .736 .753 .376 .451 .483
13、.521 .552 .592 .622 .641 .664 .710 .373 .437 .483 .524 .557 .598 .630 .663 .700 .721 .772 .798 .840 .860 Strain reversal 0.538 .539 ,541 .553 .546 .560 .578 .577 .610 .617 .605 .602 .621 .627 .637 .6:5 .636 .628 aLongitudinal wall splices consist of lap joints of joggled construction without fiber-
14、glass reinforcement. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-TABLE 11.- DIMENSIONS AND TEST RESULTS OF BENDING CYLINDERSa - Concluded b Cylinder 8A 8B ac 9A t, in. 0.0324 .032l .03X, -0523 - E t - 469 473 +75 ?gl - - 1 R - - 3.987 987 .987 .9
15、87 Test length bays 3 3 3 3 0 .Ob2 .084 - .126 .168 .210 .252 * 293 335 -377 .419 .461 * 503 .545 0 .043 .085 .128 .171 .213 .25b .2g3 .341 .584 . k26 .469 .511 .554 - 597 .640 .Ob3 .215 .258 .301 .344 .387 .430 .121 .242 aR Et Buckling Strain reversal 0.408 -457 -475 -495 - 519 .537 .553 -573 -591
16、.607 .620 .627 .641 .655 .424 .460 .492 .516 .539 .555 .?TO GQO .600 .616 .638 .646 .654 .655 .663 .673 . 500 .547 .575 .587 * 591 596 .636 .600 /u - 0.536 - 587 .600 -597 .609 * 551 .605 i 527 .53 .54g .45 .543 .547 -543 .560 .561 .544 C1.A .)VU .581 .586 aLongitudinal wall splices consist of lap j
17、oints of joggled construction b without fiber-glass reinforcement. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-16 0.020 2l17-T4 aluminumillloy XTt rivets iAiu4.561 spaced 1 0.064 at approximately 2 in 9iameter ot ring attachment rivets Rivet diam
18、eter,in. Figure 1.- Reinforcing rings of test cylinders. . Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-I . Y 8 In ul I ch In I I4 VI1 4J CI Q) 4J I cu Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,
19、-,-18 d a, al P z Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-OR E t .4- .2 Theoretical buckling coefficient 00 00 Q 0 ao 0 8 - 0 0 Cy1 inder T 0 IA 685 0 IB 688 0 IC 717 1 K .987 .987 .987 (a) Qlinder 1. c -Theoreticill S-ck! in9 coefficient 0 0
20、0 0 0 0 0 0 0 Cy1 inder E tR I 0 2A 765 .493 0 28 685 .493 0 2c 682 .493 I 1 0 .2 .4 .6 .E 1.0 1.2 (b) Cylinder 2. Figure 4.- Effect of internal pressure on the buckling coefficient for cylinders in compression. Provided by IHSNot for ResaleNo reproduction or networking permitted without license fro
21、m IHS-,-,-20 .2 0 - Cy1 inder E tR 0 3A 782 .246 0 782 .246 780 .246 38 0 3c TR E t - .2 I I I I I 1 t 0 .2 .4 .6 .8 1.0 1.2 - (c) Cylinder 3. Cy1 inder 0 4A 465 .987 0 48 463 .987 Trr c (d) Cylinder 4. Figure 4.- Concluded. 4 Provided by IHSNot for ResaleNo reproduction or networking permitted with
22、out license from IHS-,-,-t .4 .2 0 Cy1 inder ! - tR 0 5A 795 .987 - 0 5B 831 .987 0 5c 692 .987 I 1 0 .2 .4 .6 .8 (a) cylinder 5. Theoretical buckling , coefficient 0 0 0 0 0 Cylinder !? tTi 0 6A 721 .493 0 .2 .4 .6 .8 (b) Cylinder 6A. Figure 5.- Effect of internal pressure on the buckling coefficie
23、nt for cylinders in bending. Symbols with tails denote strain-reversal stresses. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-22 .2 .i .6 OR ;E T .4 .2 0 - .- 0 0 0 Cy1 inder E tF 0 7A 770 .z46 2 .6 (c) Cylinder 7A. Theoretical buckling I- coeffic
24、ient i .8 Cy1 inder ! 1 t2 0 8A 469 .987 0 86 473 .987 0 8C 475 .987 I I .8 .6 0 .2 .4 (4 Figure Cylinder 8. 5.- Continued. 7 aJ 03 P c Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-.E . nii et .2 Theoret I ca I buck I ing coefficient /- _ B- -a- c
25、yl inder i! 2 tR 9A 291 .987 0 I (e) Cylinder 9A. Figure 5.- Concluded. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-24 L-59-2984 (a) Local buckling at low value of internal pressure. a 5 = 0.356; Et “p)2 = 0.119. Et Figure 6.- Buckling of pressur
26、ized cylinder in compression. E = 688; t - 1 = 0.987. (Note fiber-glass reinforcement of longitudinal seams.) R Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-25 5 L-59-2982 (b) Axisymmetric deformations of cylinder wall at a large value of internal
27、 pressure and at a large value of applied load. Figure 6.- Continued. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-26 IW L-59-2983 Note moderate (c) Local buckling at large value of internal pressure. radii of curvature around perimeter of local b
28、uckles- Et a Et = 0.352; = 0.931. Figure 6.- Concluded. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-27 . c Y rl 0 rl k 0 I t- .rl i Frc NASA - Lanalev Field. Va. L- 881 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
