3.5
STRESS PARAMETER FILE Z88I3.TXT
Mind the following format:
[Long] = 4 bytes or 8 bytes integer
number
File only consists of
only one line:
1st value: For
isoparametric elements No. 1, 7, 8, 10, 11, 12, 14, 15, 16, 17, 18, 19,
20:
Value of the integration
order INTORD [Long]
Valid is:
0 = Calculation of stresses into the corner nodes, reduced stress
calculation not possible.
For isoparametric
elements No.1, 7, 8, 10, 11, 12, 19, 20:
1, 2, 3 or 4 (i.e. N*N) = Calculation of stresses into the Gauss
points. Reduced stress calculation is possible. A good value is 3 (=
3*3 Gauss
points). For element type No.1 and No.20 a value of 2 could be fine.
For type
No.19, a value of 4 (= 4*4 Gauss points) is recommended.
For isoparametric
elements No.14, 15, 18:
3, 7 or 13 (i.e. N) = Calculation of stresses into the Gauss points. Reduced
stress calculation is possible. A good value is 7 (= 7 Gauss points).
For type No.18, a value of 3, i.e. 3 Gauss points, will do.
For isoparametric
elements No.16, 17:
1, 4 or 5 (i.e. N) = Calculation of stresses into the Gauss points. Reduced
stress calculation is possible. A good value is 5 (= 5 Gauss points).
For element type No.17 a value of 1 could be fine.
This 1st value has no
meaning for element types No.2, 3, 4, 5, 6, 9 and 13. However, please
enter a
value of 1 to satisfy the filechecker Z88V.
2nd value: For
the plane stress elements No.3, 7, 11 and 14: KFLAG [Long]
0 = standard stress calculation
1 = additional calculation of the radial and tangential stresses
3rd value: Choice
of the reduced stress
hypothesis: ISFLAG [Long]
0 = no calculation of the reduced stresses
1 = von Mises
stresses
2 = principal or Rankine
stresses
3 = Tresca
stresses
Example 1: The stress processor Z88D is
supposed to calculate for a structure of Plane Stress Elements
No.7 the stresses for
every finite
element into 3*3 Gauss points: INTORD = 3. In addition to this
calculation of
standard-stresses a calculation of radial and tangential stresses is
supposed
to be run, KFLAG = 1. Furthermore compute von Mises stresses:
ISFLAG = 1.
Thus : 3 1 1
Example 2: The stress processor Z88D is
supposed to compute only the stresses of the corner nodes for every finite
element No.7. Only
standard-stress calculation,
thus KFLAG = 0. Do not compute von Mises stresses, thus ISFLAG
= 0. Thus : 0 0 0