Simulasi Mesin-Ansys 12

1. TUGAS 2
“STRESS CONCENTRATION AT A HOLE IN A PLATE”
PRAKTIKUM SIMULASI MESIN
OLEH :
BILI DARNANTO SUSILO NIM 141910101069
JURUSAN S1 TEKNIK MESIN
FAKULTAS TEKNIK
UNIVERSITAS JEMBER
2016

2. Problem 2 Stress Concentration at a Hole in a Plate
A. Engineering Data
 Plate
 Young’s Modulus (E) = 30E6
 Poisson’s Ratio = 0.3
B. Geometry
C. Problem
Tentukan besarnya tegangan yang terkonsentrasi di sekitar lubang!
D. Solution
 Software : Mechanical APDL (ANSYS 12.0)
 Meshing : 50
 Langkah Simulasi:
1. Jalankan program Mechanical APDL (ANSYS 12.0)
2. Tentukan Jobname dari lembar kerja kita.
(Go To ANSYS/Faculty Utility Menu)
File
Change Jobname

3. OK
3. Tentukan bidang kajian yang akan kita simulasikan.
(Go To Main Menu)
Preferences
Structural
OK
4. Mulai pemodelan permasalahan:
(Go to Main Menu)
Preprocessor
Element Type
Add/Edit/Delete
Add
Structural Mass & Solid & 8node 183 & OK

4. Options
(Element behavior, K3) Plane Strs w/ thk & OK
Close
Close Element Type window
Real Constants
Add/Edit/Delete
Add
OK
Real Constants
Add/Edit/Delete & Add & OK
THK : 1 & OK
Close

5. Material Props
Material Models & Structural & Linear & Elastic &
Isotropic
(Click inside the EX box) 30E6
(Click inside the NUXY box) 0.3 & OK
Close Material Models window

6. Modeling
Create
Areas
Rectangle
By 2 Corners
(Click X box) 0 (Click Y box) 0
(Click Width box) 10 (Click Height box) 5
OK
Circle
Solid Circle
(Click X Box) 5
(Click Y Box) 2.5
(Click Radius Box) 0.5
OK

7. Operate
Booleans
Subtract
Areas
(Click on base area from which to subtract) Click A1 (rectangle) & Apply
(Click on area to be subtracted) Click A2 (circle) & OK
(Subtract the circle from the rectangle to make the problem domain.)
(GoTo Utility Menu)
PlotCtrls
Numbering
(GoTo KP and click) OFF (then you will have ON)
(GoTo LINE and click) OFF (then you will have ON) & OK

8. Plot
Line
(GoTo Main Menu)
Preprocessor
Meshing
MeshTool

9. Click on the Area SET button
Pick the Area
OK
Click SIZE Element & type 0.2
OK
Click the Meshbutton on the MeshTool Window
(Pick the problem area) & OK

10. Solution
Define Loads
Apply
Structural
Displacement
Symmetry B.C
On Lines
(Pick lines X=0 & Y=0 and then click) OK
Pressure
On Lines
(Pick the line with pressure (L2) and then click) OK
(Click Pressure value box VAL1) –1000 & OK

11. (Go To Main Menu)
Solution
Solve
Current LS
(Read Message) OK
(Solution is done) Close
Close the “/STATUS command” window
(Go To Main Menu)
General Postproc
Plot Results
Contour Plot

12. Nodal Solu
Stress & (Scroll down upper left box until you
see) von Mises stress
(Undisplaced shape key, choose) Deformed shape
with undeformed model & OK

13. (Go To ANSYS Toolbar Menu)
Click POWRGRPH, then click PowerGraphics to Off & OK
(Go To Main Menu)
General Postproc
List Results
Percent Error & Close
(Go To Utility Menu)
File
Write DB Log File
(Write Database Log to) plate.log (This will make an ANSYS
command input file.)
Exit : Save Everything & OK (Same as QUIT in ANSYS Toolbar Menu)