Changes and corrections to

ANSYS Tutorial Releases 6.1/7.0

Kent L. Lawrence

SDC Publications

2002

 

Errata for 2nd printing June 2003

LESSON 3 Near the bottom of Page 3-3 should read 'Skip to step 4 below.'


 

Errata for 1st printing 2002


LESSON 1

Page 1-28

Figure 1-33 Boundary Conditions, Node 1

(A blank entry for value is interpreted as a zero. If you make a mistake, return to this window or use Loads > Delete . . . to make corrections.)

 


LESSON 2

Page 2-12

insert this comment before step 19.

(Note: You can use Preprocessor > Meshing > Clear > Areas to remove all elements and build a new mesh.)

 

20. Main Menu > General Postproc > Plot Results >Contour Plot > Element Solu > Stress > X-direction > Sx > OK.

Page 2-15

Geometry can be created in ANSYS interactively (as was done in the previous tutorial) or it can be created by reading a text file. For example, the geometry of Tutorial 2A can be generated by creating the following text file and entering it into ANSYS with the File > Read Input from command sequence. (Note the different numbering scheme.)

Page 2-21

16. Main Menu > General Postproc > Plot Results > Contour Plot > Element Solu > Stress > (scroll down) von Mises > SEQV > OK.

Page 2-22

17. Main Menu > General Postproc > Plot Results > Contour Plot > Element Solu > Strain-total > 1st prin > OK.

 

18. Main Menu > General Postproc > Plot Results > Contour Plot > Nodal Solu > DOF solution > Translation UX > OK.

Page 2-24

6. Main Menu > Preprocessor > Meshing > Mesh > Areas >Mapped > 3 or 4 sided > Pick All.

 


LESSON 3

Page 2-24

Change m2 to mm2

units with E = 2 x 105 N per mm2 and Yield strength = 330 N per mm2. An internal

 


LESSON 4

Page 4-7

Switch 10,000 and 17,000

A list of the database shows a model with over 17,000 nodes and 10,000 elements.

Page 4-10

Switch order of steps 2 and 3

2. Import a 15-degree solid model of the pressure vessel (or use ANSYS commands to create the solid) Select the ten-node tet, element number 187.

3. Utility Menu > WorkPlane > Change Active CS (Coordinate System) to > Global Cylindrical Y.

The angular coordinate theta corresponds to a rotation about the Y-axis.

Page 4-12

It is easy to visualize filling a six-faced region with brick elements, but a completely arbitrarily shaped solid can be difficult to mesh this way.

 


LESSON 5

Page 5-14

change 'steel' to 'aluminum' in the line that begins Objective: . . .

 


LESSON 6

Page 6-4

Remove these two sentences

Be sure all possible rigid body motions are restrained. Set UX = 0 and UY = 0 at the origin (center of the plate).

Page 6-8

k, 1, 0, -3., 0. ! Keypoint 1 is at 0.0, -3.0, 0.0

 


LESSON 7

Page 7-7

change period to comma

AL, 1, 8, 3, 7 ! Area defined by lines 1, 8, 3, 7

1. Start ANSYS, etc. Set preferences to Structural. Read in the text file defining the upper right quadrant of the geometry.

Page 7-10

2. Main Menu > Preferences > Structural, Thermal > h-method > OK

4. Main Menu > Preprocessor > Element Type > Add/Edit/Delete > Add > Thermal Mass > Solid 8 node 77 > OK

Page 7-11

Select the line on the interior and set the temperature to 75.

Select the line defining the outer surface and set the Film coefficient = 0.56 and the fluid Bulk temperature = 40.

Page 7-12

Delete step 14 Main Menu > Preferences etc and renumber remaining steps so that last one is step 20

 


LESSON 8

Page 8-4

The quantity of interest in this problem is the maximum stress in the vicinity of the hole, therefore we repeat the solution using the stress at the point of highest stress concentration as the convergence criterion. (First Plot > Elements )