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2D Dimensional Truss analysis using ANSYS APDL

2D Dimensional Truss

Problem Description:

Determine the nodal deflections, reaction forces, and stress for the truss system shown below (E = 200GPa, A = 3250mm2).

Results:

Discipline: Structural

Analysis Type: Static

No of elements: 11

No of Nodes: 07


 Max Deflection (Image & Table) 

  


PRINT U NODAL SOLUTION PER NODE

  ***** POST1 NODAL DEGREE OF FREEDOM LISTING *****                       

  LOAD STEP= 1 SUBSTEP= 1                                        

   TIME= 1.0000  LOAD CASE= 0  

     THE FOLLOWING DEGREE OF FREEDOM RESULTS ARE IN THE GLOBAL COORDINATE SYSTEM                            

NODE

UX

UY

UZ

USUM

1

0.0000

0.0000

0.0000

0.0000

2

3.0836

-3.5033

0.0000

4.6671

3

0.74604

-6.5759

0.0000

6.6181

4

1.5916

-7.2363

0.0000

7.4093

5

2.3127

-6.9923

0.0000

7.3648

6

-0.49736E-001

-3.7330

0.0000

3.7333

7

3.1334

0.0000

0.0000

3.1334

 

MAXIMUM ABSOLUTE VALUES

NODE      7              4             0             4

VALUE 3.1334      -7.2363   0.0000   7.4093

 

 

PRINT ELEMENT TABLE ITEMS PER ELEMENT

 

  ***** POST1 ELEMENT TABLE LISTING *****                                 

 

STAT     CURRENT

ELEM     LS1

    1      -82.900

  2       82.900

    3     -8.2900

    4      8.2900

    5      91.189

    6    - 91.189

    7      41.447

    8      87.038

    9      45.591

   10   -82.893

   11   -91.183

 

MINIMUM VALUES

ELEM      6

VALUE   -91.189    

 

MAXIMUM VALUES

ELEM      5

VALUE 91.189

 

 

PRINT REACTION SOLUTIONS PER NODE

 

  ***** POST1 TOTAL REACTION SOLUTION LISTING *****                       

 

  LOAD STEP=     1 SUBSTEP= 1                                        

  TIME=    1.0000  LOAD CASE=   0                                    

 

  THE FOLLOWING X,Y,Z SOLUTIONS ARE IN THE GLOBAL COORDINATE SYSTEM       

 

NODE       FX                        FY                 FZ

    1     0.58208E-010 0.51333E+006  0.0000    

    7                               0.61667E+006

 

TOTAL VALUES

VALUE   0.58208E-010 0.11300E+007 0.0000

Conclusion:

The above given truss 2D truss has 7 nodes and 11 elements. In that node 1 has no degrees of freedom and y direction node 7 was arrested. Four different loads were acting negative direction of y axis at nodes 1,3,5,7. Due the loads the truss undergone deformation. In that maximum deformation was 7.4mm at node 4 and element 9 has the maximum stress value of 91.189 N/mm2. Reaction force was acting on node 1 and node 7 because of arresting the deformation. At node 1 reaction force at x and y axis were 0.58E-10 and 0.5133E+6 respectively and at node 7 was 0.616E+6.
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