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O metod ě konečných prvků Lect_ 7

O metod ě konečných prvků Lect_ 7 .ppt. Řešení statických úloh. M. Okrouhlík Ústav termomechaniky, AV ČR , Praha Plze ň , 2010. % kodova cisla d=[1 2 3 4; 1 2 5 6; 3 4 5 6; 3 4 7 8; 5 6 7 8; 5 6 9 10; 7 8 9 10]. kruk =[2 1 3 2 4 3 5 4] okr = [1 2 9 10].

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O metod ě konečných prvků Lect_ 7

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  1. O metodě konečných prvkůLect_7.ppt Řešení statických úloh M. Okrouhlík Ústav termomechaniky, AV ČR, Praha Plzeň, 2010

  2. % kodova cisla d=[1 2 3 4; 1 2 5 6; 3 4 5 6; 3 4 7 8; 5 6 7 8; 5 6 9 10; 7 8 9 10] kruk =[2 1 3 2 4 3 5 4] okr = [1 2 9 10]

  3. E:\edu_mkp_liberec_2\mtl_prog\prut_statika.m vsesily = 1.0e+003 * 0.2887 0.5000 0 0 0.0000 -1.0000 0.0000 0 -0.2887 0.5000 pos = 1.0e-005 * 0.0700 -0.2021 0.0000 -0.4042 -0.0700 -0.2021 sila = 288.6751 0.0000 -288.6751 -577.3503 -288.6751 -0.0000 288.6751

  4. Podrobné odvození: Stejskal, V., Okrouhlík, M.: Kmitání s Matlabem, Vydavatelství ČVUT, Praha 2002, ISBN 80-01-02435-0

  5. residuals and external forces resi = Columns 1 through 5 -3.6380e-012 1.8190e-011 0 1.0914e-011 -2.5466e-011 Columns 6 through 10 -7.2760e-012 -1.0914e-011 7.2760e-012 7.2760e-012 3.6380e-012 Columns 11 through 15 5.6389e-011 0 4.3656e-011 7.2760e-011 1.7462e-010 Columns 16 through 20 -7.2760e-012 -1.4552e-010 -2.9104e-011 -1.8190e-012 -2.1828e-011 Columns 21 through 25 -8.7311e-011 4.3656e-011 9.0949e-012 -4.3656e-011 2.9104e-010 Columns 26 through 30 3.6380e-011 2.6193e-010 7.2760e-011 2.7649e-010 -1.4552e-010 Columns 31 through 35 -2.0009e-010 -1.8917e-010 1.0914e-010 1.4552e-011 -1.0550e-010 Columns 36 through 40 5.8208e-011 5.0000e+002 -5.4570e-011 5.0000e+002 1.4552e-010 ……………………. % static solution dis = xk\p; % check clc r=xk*dis; % infate displacements dist=[0 0 0 0 dis']; disp('inflated displacements') disf=dist point=[1 7:4:2*lmax-1]; displo=disf(point); dismax=max(disf) disp('residuals and external forces') resi = r' plot(displo); grid title('pruhyby na hornim povrchu [m]') xlabel('poradova cisla uzlu na povrchu') % pause % end of beam1.m

  6. E:\edu_mkp_liberec_2\mtl_prog\beam_statika\beam1.m

  7. Four-node bilinear element, plane stress, full integration

  8. Jak na to? www.it.cas.cz/cs/elektronicka-kniha-numerical-methods-computation-mechanics E:\edu_mkp_liberec_2\pdf_jpg_my_old_texts\skripta_jaderna\aplik_mechanika_kontinua_1989.pdf

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