Die Suche ergab 47 Treffer

von MNeidnicht
Do 24. Jan 2013, 16:57
Forum: Andere Fragen / Other Questions
Thema: Unterschiedliche Gesamtverschiebung
Antworten: 4
Zugriffe: 1853

Re: Unterschiedliche Gesamtverschiebung

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?!...
von MNeidnicht
Do 17. Jan 2013, 10:29
Forum: Z88OS
Thema: Speichenrad berechnen
Antworten: 1
Zugriffe: 2401

Re: Speichenrad berechnen

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...
von MNeidnicht
Sa 1. Dez 2012, 11:47
Forum: Errata - FEA Buch
Thema: Fehler in Vergleichsspannungsberechnung
Antworten: 0
Zugriffe: 13452

Fehler in Vergleichsspannungsberechnung

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...
von MNeidnicht
Fr 5. Okt 2012, 09:08
Forum: Import
Thema: Problem with importing geometry
Antworten: 6
Zugriffe: 6792

Re: Problem with importing geometry

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
von MNeidnicht
Di 2. Okt 2012, 11:56
Forum: Andere Fragen / Other Questions
Thema: thin film stress
Antworten: 1
Zugriffe: 1099

Re: thin film stress

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...
von MNeidnicht
Di 2. Okt 2012, 11:35
Forum: Z88OS
Thema: node created in AutoCad
Antworten: 14
Zugriffe: 9006

Re: node created in AutoCad

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 "C:\Z88AuroraV...
von MNeidnicht
Mi 26. Sep 2012, 16:15
Forum: Preprocessing
Thema: Hexahedron super-element meshing - bad node numbering ?
Antworten: 8
Zugriffe: 2857

Re: Hexahedron super-element meshing - bad node numbering ?

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...
von MNeidnicht
Mi 26. Sep 2012, 14:12
Forum: Preprocessing
Thema: Hexahedron super-element meshing - bad node numbering ?
Antworten: 8
Zugriffe: 2857

Re: Hexahedron super-element meshing - bad node numbering ?

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 ...
von MNeidnicht
Do 13. Sep 2012, 12:25
Forum: Preprocessing
Thema: How to modify high aspect ratio's of imported stl
Antworten: 6
Zugriffe: 4810

Re: How to modify high aspect ratio's of imported stl

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 for the cal...
von MNeidnicht
Sa 23. Jun 2012, 13:59
Forum: Windows
Thema: V2 download unavailable
Antworten: 6
Zugriffe: 1922

Re: V2 download unavailable

8) Have fun. 8)
von MNeidnicht
Fr 22. Jun 2012, 07:25
Forum: Windows
Thema: V2 download unavailable
Antworten: 6
Zugriffe: 1922

Re: V2 download unavailable

Hi Sebastian.

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

Greetings
Martin Neidnicht
von MNeidnicht
Do 21. Jun 2012, 14:16
Forum: Preprocessing
Thema: All about tetrahedron meshing
Antworten: 18
Zugriffe: 11271

Re: All about tetrahedron meshing

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.
von MNeidnicht
Do 21. Jun 2012, 13:52
Forum: Preprocessing
Thema: model created on Aurora
Antworten: 3
Zugriffe: 1755

Re: model created on Aurora

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...
von MNeidnicht
Mi 20. Jun 2012, 15:59
Forum: Preprocessing
Thema: Torque/Moment load application
Antworten: 6
Zugriffe: 2019

Re: Torque/Moment load application

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 ...
von MNeidnicht
Mi 20. Jun 2012, 15:53
Forum: Preprocessing
Thema: model created on Aurora
Antworten: 3
Zugriffe: 1755

Re: model created on Aurora

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...