1D problem solving with FEM by jovaneli

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									                      Ax
         A
                             1

                         t            4a


         C                    2

                      3P
                                      3a

     B

                         Bx
                                                                                             .



1.
                 –                                                        2) –
                                           L1=4.a=5.6m                                   L1=3.a=4.2m

                                           F1=14.5*10-4m                                    F2=23.2*10-4m
     -               1            2                                   -          2   3

                                                 MathCad                                                -

             –       – N;         -m                     – Pa




                 -                                         -2 /              –                         3




                                                                  1
                             .
MathCad




                                 -



                                         -




                                     *




                                                                                       t

                                                 t=const)
                                                            f1x=f2x=R/2   R=t.L       f1x= f2x=t.L/2,




                                             -
      f1x=t.L1/2.
                                                 2                                -
                                                                    f =t.L1/2                           .
                                                                           -
            1        + f1x

      (1)
  x         2 f2x -
      (2)
            3    x

                                                                2
   *


                            u1=0 ; u3=0




            –


                *




  MathCad




                              + f1x




                    MathCad                   [ ”.
                                          (          shift+k
[ 1,1

                        3
    *



-



-




                         (Ni)           (Nj)
                        Nx1)
        fx1=R/2)




            (Nx1)               (fx1)          .




                         -              .




                                -




                    4
                  .


    Ax
A             -                         -160                        -103
                                    2
                        F1=7.4 cm
                                                       F1=11 cm2 -160
    t
                                                                  -140
                                   2                   F1=14.5 cm2
C                      F1=14.5 cm
         -                                                          -160
    3P

B
                                               160                               160
    Bx




                          Ax
         Ax
A                         1
                               L1=a=1.4m
                          2
                                                            i            j
         t        4a      3 L2=a=1.4m
                                                     (1)        1            2
                               L3=a=1.4m
                          4
                                                     (2)        2            3
C             2           5 L4=a=1.4m
                                                     (3)        3            4
         3P                                          (4)        4            5
                  3a           L5=3*a=4.2m
                                                     (5)        5            6
B                        6

         Bx               Bx



                                        5
*




        -




    6
                             r*Ur=Fr




                                        -1
                                       r




u5= -3.353mm


                         *

                     :




     <0>
           MathCad                           .




                                  7
*




            Ax
        A            -
                         -90
            t            -110
                         -130
                         -149
        C        -
            3P

        B
                           160
            Bx




    8

								
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