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If node 10 is connected to the container nozzle, and the thermal displacement at the container nozzle is known, are the following two methods equivalent? 1. Set the initial thermal displacement for point 10 such as X=0, Y=10, Z=10, RX=0, RY=0, RZ=0, and there are no other constraints 2. Add constraints ANCHOR to 10 points, and set the CNODE point to 20. Set the initial thermal displacement to 20 points:
Just use method one. Method two using CNODE is mostly used in places where equipment settles, for example. This is unnecessary.
Personally, I feel that 1 and 2 mean the same thing. The additional displacement of the endpoint is 0, which means it is fixedly constrained. The component with a displacement of 0 must be entered as 0, otherwise it will be regarded as unconstrained. The following are the running results of two settings of a steam pipeline. The displacement and load are consistent, indicating that 1 and 2 mean the same thing. Among them, 200 is the constraint point CAESAR II DISPLACEMENT REPORT FILE: CASE 3 (OPE) W+D1+T1+P1+H+CS DATE:FEB 6,2009 --------Translations(mm.)--- --------Rotations(deg.)--------- NODE DX DY DZ RX RY RZ 10 -36.700 -3.000 0.000 0.0000 0.0000 0.0000 19 -78.160 -5.125 0.663 -0.0581 0.0136 -0.0102 20 -81.602 -13.052 1.969 -0.0692 0.0233 -0.0040 28 -81.626 -18.325 2.860 -0.0769 0.0301 0.0001 29 -81.281 -25.654 7.715 -0.0905 0.0406 0.0068 30 -80.371 -27.191 16.428 -0.0980 0.0494 0.0150 35 -47.058 4.826 136.443 -0.1067 0.1983 0.1440 38 -42.025 7.425 146.990 -0.1039 0.2137 0.1553 39 -34.643 10.502 153.276 -0.0910 0.2267 0.1641 40 -24.882 14.210 152.271 -0.0667 0.2384 0.1634 49 44.587 35.739 110.435 0.1481 0.2515 0.1397 50 50.399 28.798 105.574 0.1693 0.2409 0.1307 58 65.758 -39.812 70.837 0.2456 0.1677 0.0653 59 68.146 -49.688 69.598 0.2442 0.1594 0.0582 60 71.456 -57.446 75.733 0.2345 0.1526 0.0500 68 86.537 -77.801 123.950 0.1384 0.1188 -0.0001 69 88.646 -83.653 130.886 0.1389 0.1138 -0.0084 70 89.281 -92.724 131.552 0.1471 0.1080 -0.0152 80 79.092 -187.682 97.742 0.1178 0.0361 -0.0724 90 89.087 28.886 -184.819 0.1178 0.0361 -0.0724 100 82.910 -4.857 -192.019 0.0609 0.0102 -0.0851 109 78.824 -0.913 -92.164 -0.0930 -0.0319 -0.1262 110 76.210 -8.181 -87.096 -0.0970 -0.0344 -0.1288 118 62.416 -52.640 -74.976 -0.1479 -0.0486 -0.1380 119 59.467 -59.415 -68.786 -0.1647 -0.0512 -0.1389 120 57.431 -59.502 -59.486 -0.1820 -0.0532 -0.1398 130 53.432 -45.378 -28.597 -0.1944 -0.0580 -0.1435 140 52.106 -41.208 -18.803 -0.1721 -0.0589 -0.1447 150 51.849 -40.467 -16.920 -0.1684 -0.0590 -0.1449 160 50.768 -37.381 -9.009 -0.1684 -0.0590 -0.1449 170 50.253 -35.934 -5.242 -0.1632 -0.0591 -0.1454 178 50.201 -35.792 -4.865 -0.1627 -0.0591 -0.1454 179 45.796 -31.771 2.672 -0.1482 -0.0589 -0.1473 180 37.356 -27.954 4.905 -0.1278 -0.0570 -0.1457 189 2.474 -15.904 0.850 -0.0372 -0.0276 -0.0486 190 -0.196 -7.610 0.164 -0.0182 -0.0141 -0.0223 200 0.000 0.000 0.000 0.0000 0.0000 0.0000 6001 -68.193 -2.122 0.036 -0.0440 0.0058 -0.0162 6002 -80.170 -26.794 18.161 -0.0980 0.0512 0.0169 6003 -66.156 -7.094 85.966 -0.1224 0.1298 0.0897 6004 -24.769 14.253 152.209 -0.0663 0.2385 0.1633 6005 24.203 32.421 123.099 0.0862 0.2632 0.1569 6006 50.740 27.668 105.128 0.1717 0.2397 0.1295 6007 60.123 -8.909 87.936 0.2276 0.2007 0.0928 6008 88.855 -102.477 128.122 0.1558 0.1006 -0.0225 6009 82.933 -162.748 105.564 0.1501 0.0550 -0.0603 6010 83.098 -6.871 -167.910 0.0157 -0.0031 -0.0951 6011 81.018 -1.363 -111.029 -0.0876 -0.0266 -0.1187 6012 75.081 -11.948 -86.241 -0.0991 -0.0356 -0.1298 6013 56.917 -57.719 -55.342 -0.1889 -0.0540 -0.1403 6014 52.720 -43.059 -23.324 -0.1829 -0.0585 -0.1442 6015 16.260 -21.648 2.387 -0.0740 -0.0437 -0.0999 CAESAR II RESTRAINT REPORT FILE: CASE 3 (OPE) W+D1+T1+P1+H+CS DATE:FEB 6,2009 ------Forces(N. )------ ------Moments(Nm )------ NODE FX FY FZ MX MY MZ TYPE 200 413. -6107. 3450. -40523. -23109. -47357. Rigid ANC 10 -413. -3653. -3450. -17454. -4203. -13602. Displ. Reaction 6001 0. -17794. 0. 0. 0. 0. Prog Design VSH 6002 0. -38066. 0. 0. 0. 0. Prog Design VSH 6003 0. -46629. 0. 0. 0. 0. Prog Design CSH 6004 0. -38588. 0. 0. 0. 0. Prog Design CSH 6005 0. -21134. 0. 0. 0. 0. Prog Design CSH 6006 0. -18958. 0. 0. 0. 0. Prog Design CSH 6007 0. -53391. 0. 0. 0. 0. Prog Design CSH 6008 0. -47847. 0. 0. 0. 0. Prog Design CSH 6009 0. -58104. 0. 0. 0. 0. Prog Design CSH 6010 0. -26362. 0. 0. 0. 0. Prog Design CSH 6011 0. -27385. 0. 0. 0. 0. Prog Design VSH 6012 0. -37726. 0. 0. 0. 0. Prog Design VSH 6013 0. -2590. 0. 0. 0. 0. Prog Design VSH 6014 0. -43976. 0. 0. 0. 0. Prog Design VSH 6015 0. -37440. 0. 0. 0. 0. Prog Design VSH is replaced by endpoint additional displacement CAESAR II DISPLACEMENT REPORT FILE: CASE 3 (OPE) W+D1+T1+P1+H+CS DATE:FEB 6,2009 --------Translations(mm.)- --------Rotations(deg.)--------- NODE DX DY DZ RX RY RZ 10 -36.700 -3.000 0.000 0.0000 0.0000 0.0000 19 -78.160 -5.125 0.663 -0.0581 0.0136 -0.0102 20 -81.602 -13.052 1.969 -0.0692 0.0233 -0.0040 28 -81.626 -18.325 2.860 -0.0769 0.0301 0.0001 29 -81.281 -25.654 7.715 -0.0905 0.0406 0.0068 30 -80.371 -27.191 16.428 -0.0980 0.0494 0.0150 35 -47.058 4.826 136.443 -0.1067 0.1983 0.1440 38 -42.025 7.425 146.990 -0.1039 0.2137 0.1553 39 -34.643 10.502 153.276 -0.0910 0.2267 0.1641 40 -24.882 14.210 152.271 -0.0667 0.2384 0.1634 49 44.587 35.739 110.435 0.1481 0.2515 0.1397 50 50.399 28.798 105.574 0.1693 0.2409 0.1307 58 65.758 -39.812 70.837 0.2456 0.1677 0.0653 59 68.146 -49.688 69.598 0.2442 0.1594 0.0582 60 71.456 -57.446 75.733 0.2345 0.1526 0.0500 68 86.537 -77.801 123.950 0.1384 0.1188 -0.0001 69 88.646 -83.653 130.886 0.1389 0.1138 -0.0084 70 89.281 -92.724 131.552 0.1471 0.1080 -0.0152 80 79.092 -187.682 97.742 0.1178 0.0361 -0.0724 90 89.087 28.886 -184.819 0.1178 0.0361 -0.0724 100 82.910 -4.857 -192.019 0.0609 0.0102 -0.0851 109 78.824 -0.913 -92.164 -0.0930 -0.0319 -0.1262 110 76.210 -8.181 -87.096 -0.0970 -0.0344 -0.1288 118 62.416 -52.640 -74.976 -0.1479 -0.0486 -0.1380 119 59.467 -59.415 -68.786 -0.1647 -0.0512 -0.1389 120 57.431 -59.502 -59.486 -0.1820 -0.0532 -0.1398 130 53.432 -45.378 -28.597 -0.1944 -0.0580 -0.1435 140 52.106 -41.208 -18.803 -0.1721 -0.0589 -0.1447 150 51.849 -40.467 -16.920 -0.1684 -0.0590 -0.1449 160 50.768 -37.381 -9.009 -0.1684 -0.0590 -0.1449 170 50.253 -35.934 -5.242 -0.1632 -0.0591 -0.1454 178 50.201 -35.792 -4.865 -0.1627 -0.0591 -0.1454 179 45.796 -31.771 2.672 -0.1482 -0.0589 -0.1473 180 37.356 -27.954 4.905 -0.1278 -0.0570 -0.1457 189 2.474 -15.904 0.850 -0.0372 -0.0276 -0.0486 190 -0.196 -7.610 0.164 -0.0182 -0.0141 -0.0223 200 0.000 0.000 0.000 0.0000 0.0000 0.0000 6001 -68.193 -2.122 0.036 -0.0440 0.0058 -0.0162 6002 -80.170 -26.794 18.161 -0.0980 0.0512 0.0169 6003 -66.156 -7.094 85.966 -0.1224 0.1298 0.0897 6004 -24.769 14.253 152.209 -0.0663 0.2385 0.1633 6005 24.203 32.421 123.099 0.0862 0.2632 0.1569 6006 50.740 27.668 105.128 0.1717 0.2397 0.1295 6007 60.123 -8.909 87.936 0.2276 0.2007 0.0928 6008 88.855 -102.477 128.122 0.1558 0.1006 -0.0225 6009 82.933 -162.748 105.564 0.1501 0.0550 -0.0603 6010 83.098 -6.871 -167.910 0.0157 -0.0031 -0.0951 6011 81.018 -1.363 -111.029 -0.0876 -0.0266 -0.1187 6012 75.081 -11.948 -86.241 -0.0991 -0.0356 -0.1298 6013 56.917 -57.719 -55.342 -0.1889 -0.0540 -0.1403 6014 52.720 -43.059 -23.324 -0.1829 -0.0585 -0.1442 6015 16.260 -21.648 2.387 -0.0740 -0.0437 -0.0999 CAESAR II RESTRAINT REPORT FILE: CASE 3 (OPE) W+D1+T1+P1+H+CS DATE:FEB 6,2009 ------Forces(N. )------- ------Moments(Nm )------ NODE FX FY FZ MX MY MZ TYPE 10 -413. -3653. -3450. -17454. -4203. -13602. Displ. Reaction 200 413. -6107. 3450. -40523. -23109. -47357. Displ. Reaction 6001 0. -17794. 0. 0. 0. 0. Prog Design VSH 6002 0. -38066. 0. 0. 0. 0. Prog Design VSH 6003 0. -46629. 0. 0. 0. 0. Prog Design CSH 6004 0. -38588. 0. 0. 0. 0. Prog Design CSH 6005 0. -21134. 0. 0. 0. 0. Prog Design CSH 6006 0. -18958. 0. 0. 0. 0. Prog Design CSH 6007 0. -53391. 0. 0. 0. 0. Prog Design CSH 6008 0. -47847. 0. 0. 0. 0. Prog Design CSH 6009 0. -58104. 0. 0. 0. 0. Prog Design CSH 6010 0. -26362. 0. 0. 0. 0. Prog Design CSH 6011 0. -27385. 0. 0. 0. 0. Prog Design VSH 6012 0. -37726. 0. 0. 0. 0. Prog Design VSH 6013 0. -2590. 0. 0. 0. 0. Prog Design VSH 6014 0. -43976. 0. 0. 0. 0. Prog Design VSH 6015 0. -37440. 0. 0. 0. 0. Prog Design VSH
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There is so much content in it, and I learned a lot of knowledge.