Z88-Forum

Hallo Kathrin, grundsätzlich stimmt es natürlich, dass man bei höherer Knotenzahl (sprich: feinerem Netz) auch mit besseren Ergebnissen rechnen darf. Die Verschiebungsergebnisse, die Sie aufgezählt haben, deutet auch auf eine Konvergenz hin: Vielleicht liegt der Grenzwert bei 4,5, vielleicht höher?!...

Hallo Axel, zunächst danke für die Blumen - es freut uns immer, von zufriedenen Anwendern zu hören. Zu der Elementauswahl: Wenn ich richtig verstehe, möchten Sie die Speichen des Rades deshalb nur zweidimensional modellieren, weil sie sich ausschließlich entlang ihrer Längsrichtung stauchen bzw. deh...

Ein Fehler in der Normalspannungs-Hypothese für den ebenen Spannungszustand hat die älteren Auflagen überdauert und sich auch in die 4. Auflage des Buchs geschlichen. Dort heißt es auf Seite 271: falsch.PNG Bei korrekter Umformung der vorheringen Zeile muss der Teiler aber statt 2 richtigerweise 4 l...

Hello Syahadah,

we know about some little bugs according to the pango-problem in AuroraV1. But it only deals with the text-representation on the screen. Your calculation results are still reliable!

We have eliminated this problem In the current version of Aurora.

Greetings
Martin Neidnicht

Hello wohenke, at the moment we support just three kinds of boundary conditions: fixations, pressures and forces. Any other types of loads must be combined from these. Initial stresses are not explicitly offered now. But in my opinion it has to be possible, to convert them into equivalent node-force...

Hello Syahadah, maybe you did not set any path to your media-player yet. For this purpose click on "Tools -> Options -> Paths -> Mediaplayer" an choose the player of your choice. Because the video files are .wmv we recommend to use the windows mediaplayer. You can browse to the folder &quo...

Yes. And this is exactly, what it should be. :wink: What would happen if only the upper hexahedron would be divided? New nodes, which lie on the surface between the two elements then are no longer part of the lower hexahedron. Displacements can only be transmitted via node matchings. So the elements...

Hello Siegfried, the problem is that even your one-hexahedron-model has a wrong element numbering. This means, that all surface-normals show to the middle of the part and not outside, as they should. The colour of the part in this case is black instead of yellow. Please try this z88i1.txt-file: 3 8 ...

Hi Tim, we know well the problems that occur with netgen and tetgen. Tetgen accepts the geometry from STL exactly, but provides poor quality element. Netgen creates very "beautiful" elements, but the volume of the part changes. ... Unfortunately mostly at the details that are of interest f...

Have fun.

Hi Sebastian.

We started 40 minutes ago to build the installer. But at the moment, I'm answering a forum question.

Greetings
Martin Neidnicht

Hello Selopez,

I have trained in the e-mail program, so your emails should now ariving correctly. You can still control the time to write here in the forum, if you like.

So as usual: z88aurora@uni-bayreuth.de

Greetings.

Hello syahadah, in fact, the V14 respectively V13 is the open source version. And the remark that the version also runs on xp, implies that they should work with newer Windows versions. We also have a lot of testing under Windows 7. So you can rest assured and try it. If you do not want, you can sti...

Hi peterpoon, no, there is no volume-element with 6dof. Neither z88, or in other fea-tools. At least I've never seen. As auroraico said: There is no need to use torques in volume-elements, because they must change their shape to accommodate a bend. And this change can be sufficiently described with ...

Hello syahadah, Z88 has always been only a finite element analysis program and was supplied with imported data from CAD-programs or other FEA-Tools. Now we can create entire rod structure itself, but solid models are simply too complicated for a manual entering of nodes and elements. Please understa...