— For ADINA Users Only —

This is a restricted area meant for current ADINA users only. If your license does not include current support of ADINA, please kindly exit this page.


Useful Hints and Issues
Regarding the Use of the ADINA System, v. 8.4.4

Issue No. 18, posted December 12, 2007

If the coefficient of friction is changed in a restart run involving node-to-node contact, the program still uses the old coefficient of friction. Note that this issue does not affect the surface based contact capability, used by default. This bug is fixed in v. 8.4.5.


Issue No. 17, posted November 26, 2007

When concentrated nodal dampers are used with the Bathe composite time integration method, due to a coding error, results are wrong. Other forms of damping such as Rayleigh damping are not affected by this coding error. This bug is fixed in v. 8.4.5.


Issue No. 16, posted November 15, 2007

Shell section results (membrane forces and bending moments) will be wrong if the trapezoidal integration rule is used. This issue does not affect other non-sectional results such as displacements, stresses and strains.

In the case of uniform stress though the thickness the membrane force will be scaled up by a factor of N/(N-1) where N is the number of thickness integration points in the trapezoidal rule. This bug is fixed in v. 8.4.5.


Issue No. 15, posted November 5, 2007

The results may be wrong in cyclic symmetry frequency analysis with contact, if the model has an odd number of cyclic parts. While this is a program error, the results of the analysis will be obviously wrong when this error is triggered, since contact conditions will not be enforced. This bug is fixed in v. 8.4.5.


Issue No. 14, posted November 5, 2007

In explicit analysis, if the user requests to kill elements whose initial stable time step is less than a specific value, and also chooses to manually set the time step size (rather than use the default automatic stability based step size), no elements will be killed. When this error is triggered the results of the analysis will be obviously wrong, since the elements reported killed will still be active. This bug is fixed in v. 8.4.5.


Issue No. 13, posted August 27, 2007

When the 3D-iterative solver is used for a model which has mesh gluing, the program crashes. As a workaround, please use tied contact instead of mesh gluing when the 3D-iterative solver is selected. This bug is fixed in v. 8.4.5.



Useful Hints and Issues
Regarding the Use of the ADINA System, v. 8.4.3

Issue No. 12, posted July 23, 2007

When using the thermal strain option with the rubber models, it is assumed that the thermal strains are small. This bug is fixed in v. 8.4.4.


Issue No. 11, posted July 23, 2007

Using the initial strain option in all the rubber models, it is assumed that these strains are small. This bug is fixed in v. 8.4.4.


Issue No. 10, posted July 23, 2007

When creating a volume, it may happen that 2 lines are not replaced by a single line, due to the tolerance used for replacing the 2 lines by a single line. This bug is fixed in v. 8.4.4.


Issue No. 9, posted July 23, 2007

When applying gravity loading to a model with shell elements, rigid links, and potential-based fluid elements (all three modeling options), the program may generate incorrect results. This bug is fixed in v. 8.4.4.


Issue No. 8, posted July 16, 2007

The program incorrectly outputs stresses in the material coordinate system when using the plastic-orthotropic material in the shell elements. The user must use the global or local stress output. This bug is fixed in v. 8.4.4.


Issue No. 7, posted July 16, 2007

The user input for a plastic-orthotropic material model should be consistent when an analytical universal plastic stress-strain curve is entered.

That is, the two yield stresses in this case:

     yield stress from user-input = Y1

     initial yield stress from analytical universal plastic stress-strain curve, = Y2

must be input to be the same, i.e., Y1 = Y2. This bug is fixed in v. 8.4.4.


Issue No. 6, posted July 16, 2007

If the gap override is non-zero and a restart analysis is performed involving bolt elements, a wrong gap value is used. This bug is fixed in v. 8.4.4.


Issue No. 5, posted July 11, 2007

Running the AUI on a 64-bit Linux machine, an error may occur in that the BODY BLEND command cannot blend some edges of a body. This bug is fixed in v. 8.4.4.


Issue No. 4, posted July 11, 2007

When imposing initial shear stresses, the axes used should be the global axes. Frequently, only normal initial stresses are defined and then non-global axes can be used. This bug is fixed in v. 8.4.4.



Useful Hints and Issues
Regarding the Use of the ADINA System, v. 8.4.2

Issue No. 3, posted May 7, 2007

The programs currently allow the following combination of options:

    Explicit analysis, u/p elements, linear thermal or thermo-isotropic material

But this combination of options is not supported, and will give wrong results. Therefore users are asked not to use this combination of options.

Note that Table 8.1 in the ADINA Theory and Modeling Guide correctly shows that this combination of options is not supported. This bug is fixed in v. 8.4.4.


Issue No. 2, posted May 7, 2007

The modal stress output in frequency analysis with cyclic symmetry is wrong if the model has incompatible modes. The frequencies and mode shapes are correct, but the modal stresses (and strains) are incorrect. This bug is fixed in v. 8.4.3.


Issue No. 1, posted May 7, 2007

The substructuring capability in dynamic analysis may not yield the correct solution. This bug is fixed in v. 8.4.4.



For the latest Useful Hints and Issues Regarding the Use of ADINA System, click here.