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Finite Element Analysis in Structural Mechanics

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en:example:dyn:1:4

Transition elements, BEAM71D1

Problem

Mesh

element type nodes
1 56 1 2 3 4 5 6 7 8 25 26 27 28 29 30 31 32 33 34 35 36
2 61 9 10 12 11 37 38 39 40
3 56 13 14 15 16 17 18 19 20 41 42 43 44 45 46 47 48 49 50 51 52
4 61 21 22 24 23 53 54 55 56
5 71 element 1 face S6 ↔ element 2 edge L1 
6 71 element 2 edge L3 ↔ element 3 face S1
7 71 element 3 face S6 ↔ element 4 edge L1

Boundary conditions

$u=v=w=0$ at nodes 1, 2, 3, 4, 25, 26, 27, 28

Computation

The computation is executed with the following commands:

beam71d1.bat
rmd3 beam71d1.i1
rpd3 beam71d1.i2
srh3 beam71d1.i3
fefs beam71d1.i4
hmot beam71d1.iM
heig beam71d1.iE
hfrq beam71d1.iF

Input

beam71d1.i1
;  NELEM NNOD ITED
IP   7    56   56
;  CRIT SCALE THDEF
RP 1.01   1    0.01
XY N 1:24 X 4*0 6*0.25 6*0.5 6*0.75 2*1
          Y =A 2*(0 0.02 0.02 0) =A
            =B 2*(0 0.02) =B =A =B
          Z =A 2*(0 0 0.01 0.01) =A
            =B 4*0.005 =B =A =B
EL E 1 3 N =A 1:8 =A =B 25:36 =B =12A =16B
EL T 61 E 2 4 N =A 9 10 12 11 =A =B 37:40 =B =12A =16B
CN T -3 E 5  1 6  2 1
        E 6  2 3  3 1
        E 7  3 6  4 1
EN
EN
beam71d1.i2
;  KREST
IP   1
         ; E    α ν   ρ
MP 1 T 1 V 2e11 0 0.3 7800
AS 1 /M 1 /B 0 N 1:4 25:28
EN
EN
beam71d1.i3
;  KREST
IP   1
EN
EN
beam71d1.i4
;  KREST
IP   1
EN
EN
beam71d1.iM
;  KDIAG KPRIN
IP   1     0
EN
EN
beam71d1.iE
;  KREST NROOT NITERX KTPR KEVP
IP   1     10     0     0    0
EN
EN
beam71d1.iF
;  KPRIN KOUT IVL IVU
IP   0     0   0   0
EN
EN

Output

beam71d1.oF
;  KPRIN KOUT IVL IVU                                                           
IP   0     0   0   0                                                            
EN                                                                              
EN                                                                              


                              FREQUENCIES [1/s]
  0.844573E+01  0.168540E+02  0.550039E+02  0.112030E+03  0.174563E+03
  0.354233E+03  0.422366E+03  0.662063E+03  0.826678E+03  0.914590E+03

                                * END OF HFRQ *
 TOTAL CPU: 00:00:00
en/example/dyn/1/4.txt · Last modified: 2024-11-07 09:27 by Petr Pařík