GSoC2020, FEM: extend examples

About the development of the FEM module/workbench.

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HoWil
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Re: GSoC2020, FEM: extend examples

Postby HoWil » Tue Jun 30, 2020 4:59 am

Sudhanshu wrote:
Mon Jun 29, 2020 8:01 pm
Also, the First Evaluation is here!! :!:

When are we going to complete it?
I think you can start right away.
Please, double check at the end if you really submitted/finished everything requested concerning the evaluation.
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bernd
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Re: GSoC2020, FEM: extend examples

Postby bernd » Tue Jun 30, 2020 6:14 am

Sudhanshu wrote:
Mon Jun 29, 2020 10:31 pm
Also while you are at it, have a look at the results of the beam hinged example.
I am not happy with it. Especially the displacement.
strange ... for me your example does not run at all. I need to select different faces ... See https://github.com/Sudhanshu-Dubey14/FreeCAD_sd/pull/8
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Sudhanshu
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Re: GSoC2020, FEM: extend examples

Postby Sudhanshu » Tue Jun 30, 2020 8:34 am

HoWil wrote:
Tue Jun 30, 2020 4:59 am
Sudhanshu wrote:
Mon Jun 29, 2020 8:01 pm
Also, the First Evaluation is here!! :!:

When are we going to complete it?
I think you can start right away.
Please, double check at the end if you really submitted/finished everything requested concerning the evaluation.
I have submitted it, for once.
But I can still change things if I want and submit again.
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Sudhanshu
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Re: GSoC2020, FEM: extend examples

Postby Sudhanshu » Tue Jun 30, 2020 10:56 pm

bernd wrote:
Tue Jun 30, 2020 6:14 am
Sudhanshu wrote:
Mon Jun 29, 2020 10:31 pm
Also while you are at it, have a look at the results of the beam hinged example.
I am not happy with it. Especially the displacement.
strange ... for me your example does not run at all. I need to select different faces ... See https://github.com/Sudhanshu-Dubey14/FreeCAD_sd/pull/8
And quite strangely, when I try your PR I get this error in the report view:

Code: Select all

1.09e-07 <App> Document.cpp(3749): Unknown exception in Unnamed#FemConstraintTransform thrown
Recompute failed! Please check report view.
bhb_beam_hinged.png
bhb_beam_hinged.png (214.08 KiB) Viewed 162 times

The face numbers are changing dynamically, somehow.
The fusion of the mirror might be responsible for this.
We need someone else to try both the codes.

Also, @bernd were you getting correct results with the faces you chose?
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Sudhanshu
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Re: GSoC2020, FEM: extend examples

Postby Sudhanshu » Tue Jun 30, 2020 11:15 pm

bernd wrote:
Mon Jun 29, 2020 7:52 pm
New example to add: See post https://forum.freecadweb.org/viewtopic. ... 90#p412047 Latest master is needed for this.
After opening the example given in that post, sometime later I get segmentation fault:

Code: Select all

Program received signal SIGSEGV, Segmentation fault.
#0  /usr/lib/libc.so.6(+0x3c3e0) [0x7f4c6f0fe3e0]
#1  0x7f4c71259369 in SoGLLazyElement::endCaching(SoState*) from /usr/lib/libCoin.so.80+0x19
#2  0x7f4c7113f9b7 in SoGLCacheList::close(SoGLRenderAction*) from /usr/lib/libCoin.so.80+0x57
#3  0x7f4c7130b1f8 in SoSeparator::GLRenderBelowPath(SoGLRenderAction*) from /usr/lib/libCoin.so.80+0x1b8
#4  0x7f4c7130b445 in SoSeparator::GLRenderBelowPath(SoGLRenderAction*) from /usr/lib/libCoin.so.80+0x405
#5  0x7f4c7130b445 in SoSeparator::GLRenderBelowPath(SoGLRenderAction*) from /usr/lib/libCoin.so.80+0x405
#6  0x7f4c7130b445 in SoSeparator::GLRenderBelowPath(SoGLRenderAction*) from /usr/lib/libCoin.so.80+0x405
#7  0x7f4c710e0579 in SoAction::traverse(SoNode*) from /usr/lib/libCoin.so.80+0x69
#8  0x7f4c712a24fb in SoChildList::traverse(SoAction*, int, int) from /usr/lib/libCoin.so.80+0x16b
#9  0x7f4c7130f511 in SoSwitch::doAction(SoAction*) from /usr/lib/libCoin.so.80+0x2b1
#10  0x7f4c7130b445 in SoSeparator::GLRenderBelowPath(SoGLRenderAction*) from /usr/lib/libCoin.so.80+0x405
#11  0x7f4c7130b445 in SoSeparator::GLRenderBelowPath(SoGLRenderAction*) from /usr/lib/libCoin.so.80+0x405
#12  0x7f4c710e0579 in SoAction::traverse(SoNode*) from /usr/lib/libCoin.so.80+0x69
#13  0x7f4c712a24fb in SoChildList::traverse(SoAction*, int, int) from /usr/lib/libCoin.so.80+0x16b
#14  0x7f4c712cac11 in SoBaseKit::doAction(SoAction*) from /usr/lib/libCoin.so.80+0x41
#15  0x7f4c71155708 in SoDragger::GLRender(SoGLRenderAction*) from /usr/lib/libCoin.so.80+0x38
#16  0x7f4c7130b445 in SoSeparator::GLRenderBelowPath(SoGLRenderAction*) from /usr/lib/libCoin.so.80+0x405
#17  0x7f4c710e0579 in SoAction::traverse(SoNode*) from /usr/lib/libCoin.so.80+0x69
#18  0x7f4c712a24fb in SoChildList::traverse(SoAction*, int, int) from /usr/lib/libCoin.so.80+0x16b
#19  0x7f4c712cac11 in SoBaseKit::doAction(SoAction*) from /usr/lib/libCoin.so.80+0x41
#20  0x7f4c71155708 in SoDragger::GLRender(SoGLRenderAction*) from /usr/lib/libCoin.so.80+0x38
#21  0x7f4c710e0579 in SoAction::traverse(SoNode*) from /usr/lib/libCoin.so.80+0x69
#22  0x7f4c712a24fb in SoChildList::traverse(SoAction*, int, int) from /usr/lib/libCoin.so.80+0x16b
#23  0x7f4c71298a55 in SoTransformManip::doAction(SoAction*) from /usr/lib/libCoin.so.80+0x75
#24  0x7f4c71299b63 in SoTransformManip::GLRender(SoGLRenderAction*) from /usr/lib/libCoin.so.80+0x13
#25  0x7f4c7130b445 in SoSeparator::GLRenderBelowPath(SoGLRenderAction*) from /usr/lib/libCoin.so.80+0x405
#26  0x7f4c710e0579 in SoAction::traverse(SoNode*) from /usr/lib/libCoin.so.80+0x69
#27  0x7f4c712a24fb in SoChildList::traverse(SoAction*, int, int) from /usr/lib/libCoin.so.80+0x16b
#28  0x7f4c7130f511 in SoSwitch::doAction(SoAction*) from /usr/lib/libCoin.so.80+0x2b1
#29  0x7f4c7130a7dd in SoSeparator::GLRenderInPath(SoGLRenderAction*) from /usr/lib/libCoin.so.80+0x4ed
#30  0x7f4c7444d056 in Gui::SoFCSelectionRoot::_renderPrivate(SoGLRenderAction*, bool) from /run/media/sudhanshu/Thunder/Repos/FreeCAD_sd/build_nonetgen/lib/libFreeCADGui.so+0x450
#31  0x7f4c7444cb2b in Gui::SoFCSelectionRoot::renderPrivate(SoGLRenderAction*, bool) from /run/media/sudhanshu/Thunder/Repos/FreeCAD_sd/build_nonetgen/lib/libFreeCADGui.so+0x253
#32  0x7f4c7444d3a6 in Gui::SoFCSelectionRoot::GLRenderInPath(SoGLRenderAction*) from /run/media/sudhanshu/Thunder/Repos/FreeCAD_sd/build_nonetgen/lib/libFreeCADGui.so+0x60
#33  0x7f4c7130a7dd in SoSeparator::GLRenderInPath(SoGLRenderAction*) from /usr/lib/libCoin.so.80+0x4ed
#34  0x7f4c744516ed in Gui::SoFCPathAnnotation::GLRenderBelowPath(SoGLRenderAction*) from /run/media/sudhanshu/Thunder/Repos/FreeCAD_sd/build_nonetgen/lib/libFreeCADGui.so+0x307
#35  0x7f4c744518a6 in Gui::SoFCPathAnnotation::GLRenderInPath(SoGLRenderAction*) from /run/media/sudhanshu/Thunder/Repos/FreeCAD_sd/build_nonetgen/lib/libFreeCADGui.so+0x30
#36  0x7f4c7130a7dd in SoSeparator::GLRenderInPath(SoGLRenderAction*) from /usr/lib/libCoin.so.80+0x4ed
#37  0x7f4c7444d220 in Gui::SoFCSelectionRoot::_renderPrivate(SoGLRenderAction*, bool) from /run/media/sudhanshu/Thunder/Repos/FreeCAD_sd/build_nonetgen/lib/libFreeCADGui.so+0x61a
#38  0x7f4c7444cb2b in Gui::SoFCSelectionRoot::renderPrivate(SoGLRenderAction*, bool) from /run/media/sudhanshu/Thunder/Repos/FreeCAD_sd/build_nonetgen/lib/libFreeCADGui.so+0x253
#39  0x7f4c7444d3a6 in Gui::SoFCSelectionRoot::GLRenderInPath(SoGLRenderAction*) from /run/media/sudhanshu/Thunder/Repos/FreeCAD_sd/build_nonetgen/lib/libFreeCADGui.so+0x60
#40  0x7f4c7130a7dd in SoSeparator::GLRenderInPath(SoGLRenderAction*) from /usr/lib/libCoin.so.80+0x4ed
#41  0x7f4c7130a7dd in SoSeparator::GLRenderInPath(SoGLRenderAction*) from /usr/lib/libCoin.so.80+0x4ed
#42  0x7f4c7130a7dd in SoSeparator::GLRenderInPath(SoGLRenderAction*) from /usr/lib/libCoin.so.80+0x4ed
#43  0x7f4c710e0579 in SoAction::traverse(SoNode*) from /usr/lib/libCoin.so.80+0x69
#44  0x7f4c710e80c6 in SoGLRenderAction::beginTraversal(SoNode*) from /usr/lib/libCoin.so.80+0x186
#45  0x7f4c710e0ef2 in SoAction::apply(SoPathList const&, int) from /usr/lib/libCoin.so.80+0x5b2
#46  0x7f4c7446b587 in Gui::SoBoxSelectionRenderAction::apply(SoPathList const&, int) from /run/media/sudhanshu/Thunder/Repos/FreeCAD_sd/build_nonetgen/lib/libFreeCADGui.so+0x29
#47  0x7f4c710e78f7 in SoGLRenderActionP::renderSingle(SoNode*) from /usr/lib/libCoin.so.80+0x277
#48  0x7f4c710e7dde in SoGLRenderActionP::render(SoNode*) from /usr/lib/libCoin.so.80+0x11e
#49  0x7f4c710e7fe2 in SoGLRenderAction::beginTraversal(SoNode*) from /usr/lib/libCoin.so.80+0xa2
#50  0x7f4c710e125a in SoAction::apply(SoNode*) from /usr/lib/libCoin.so.80+0x2ea
#51  0x7f4c7446ac29 in Gui::SoBoxSelectionRenderAction::apply(SoNode*) from /run/media/sudhanshu/Thunder/Repos/FreeCAD_sd/build_nonetgen/lib/libFreeCADGui.so+0x41
#52  0x7f4c713dd63a in SoRenderManager::renderScene(SoGLRenderAction*, SoNode*, unsigned int) from /usr/lib/libCoin.so.80+0x4a
#53  0x7f4c713de802 in SoRenderManager::actuallyRender(SoGLRenderAction*, int, int, int) from /usr/lib/libCoin.so.80+0xa2
#54  0x7f4c713de9b7 in SoRenderManager::renderSingle(SoGLRenderAction*, int, int, int) from /usr/lib/libCoin.so.80+0xc7
#55  0x7f4c713deffc in SoRenderManager::render(SoGLRenderAction*, int, int, int) from /usr/lib/libCoin.so.80+0x9c
#56  0x7f4c713dce6d in SoRenderManager::render(int, int) from /usr/lib/libCoin.so.80+0x8d
#57  0x7f4c744fc810 in SIM::Coin3D::Quarter::QuarterWidget::actualRedraw() from /run/media/sudhanshu/Thunder/Repos/FreeCAD_sd/build_nonetgen/lib/libFreeCADGui.so+0x54
#58  0x7f4c74555af0 in Gui::View3DInventorViewer::renderScene() from /run/media/sudhanshu/Thunder/Repos/FreeCAD_sd/build_nonetgen/lib/libFreeCADGui.so+0x2f2
#59  0x7f4c745552cf in Gui::View3DInventorViewer::actualRedraw() from /run/media/sudhanshu/Thunder/Repos/FreeCAD_sd/build_nonetgen/lib/libFreeCADGui.so+0x37
#60  0x7f4c744fc56c in SIM::Coin3D::Quarter::QuarterWidget::paintEvent(QPaintEvent*) from /run/media/sudhanshu/Thunder/Repos/FreeCAD_sd/build_nonetgen/lib/libFreeCADGui.so+0x286
#61  0x7f4c74505422 in SIM::Coin3D::Quarter::SoQTQuarterAdaptor::paintEvent(QPaintEvent*) from /run/media/sudhanshu/Thunder/Repos/FreeCAD_sd/build_nonetgen/lib/libFreeCADGui.so+0x5c
#62  0x7f4c7048ac7e in QWidget::event(QEvent*) from /usr/lib/libQt5Widgets.so.5+0x1ce
#63  0x7f4c70535f9f in QFrame::event(QEvent*) from /usr/lib/libQt5Widgets.so.5+0x1f
#64  0x7f4c744fc771 in SIM::Coin3D::Quarter::QuarterWidget::viewportEvent(QEvent*) from /run/media/sudhanshu/Thunder/Repos/FreeCAD_sd/build_nonetgen/lib/libFreeCADGui.so+0x189
#65  0x7f4c6f979403 in QCoreApplicationPrivate::sendThroughObjectEventFilters(QObject*, QEvent*) from /usr/lib/libQt5Core.so.5+0x93
#66  0x7f4c704496f1 in QApplicationPrivate::notify_helper(QObject*, QEvent*) from /usr/lib/libQt5Widgets.so.5+0x71
#67  0x7f4c7413ca5e in Gui::GUIApplication::notify(QObject*, QEvent*) from /run/media/sudhanshu/Thunder/Repos/FreeCAD_sd/build_nonetgen/lib/libFreeCADGui.so+0x10e
#68  0x7f4c6f97969a in QCoreApplication::notifyInternal2(QObject*, QEvent*) from /usr/lib/libQt5Core.so.5+0x12a
#69  0x7f4c70482cb8 in QWidgetPrivate::sendPaintEvent(QRegion const&) from /usr/lib/libQt5Widgets.so.5+0x38
#70  0x7f4c7048352c in QWidgetPrivate::drawWidget(QPaintDevice*, QRegion const&, QPoint const&, QFlags<QWidgetPrivate::DrawWidgetFlag>, QPainter*, QWidgetRepaintManager*) from /usr/lib/libQt5Widgets.so.5+0x81c
#71  0x7f4c704848f0 in QWidgetPrivate::paintSiblingsRecursive(QPaintDevice*, QList<QObject*> const&, int, QRegion const&, QPoint const&, QFlags<QWidgetPrivate::DrawWidgetFlag>, QPainter*, QWidgetRepaintManager*) from /usr/lib/libQt5Widgets.so.5+0x510
#72  0x7f4c7048323d in QWidgetPrivate::drawWidget(QPaintDevice*, QRegion const&, QPoint const&, QFlags<QWidgetPrivate::DrawWidgetFlag>, QPainter*, QWidgetRepaintManager*) from /usr/lib/libQt5Widgets.so.5+0x52d
#73  0x7f4c704848f0 in QWidgetPrivate::paintSiblingsRecursive(QPaintDevice*, QList<QObject*> const&, int, QRegion const&, QPoint const&, QFlags<QWidgetPrivate::DrawWidgetFlag>, QPainter*, QWidgetRepaintManager*) from /usr/lib/libQt5Widgets.so.5+0x510
#74  0x7f4c7048323d in QWidgetPrivate::drawWidget(QPaintDevice*, QRegion const&, QPoint const&, QFlags<QWidgetPrivate::DrawWidgetFlag>, QPainter*, QWidgetRepaintManager*) from /usr/lib/libQt5Widgets.so.5+0x52d
#75  0x7f4c704848f0 in QWidgetPrivate::paintSiblingsRecursive(QPaintDevice*, QList<QObject*> const&, int, QRegion const&, QPoint const&, QFlags<QWidgetPrivate::DrawWidgetFlag>, QPainter*, QWidgetRepaintManager*) from /usr/lib/libQt5Widgets.so.5+0x510
#76  0x7f4c7048323d in QWidgetPrivate::drawWidget(QPaintDevice*, QRegion const&, QPoint const&, QFlags<QWidgetPrivate::DrawWidgetFlag>, QPainter*, QWidgetRepaintManager*) from /usr/lib/libQt5Widgets.so.5+0x52d
#77  0x7f4c704848f0 in QWidgetPrivate::paintSiblingsRecursive(QPaintDevice*, QList<QObject*> const&, int, QRegion const&, QPoint const&, QFlags<QWidgetPrivate::DrawWidgetFlag>, QPainter*, QWidgetRepaintManager*) from /usr/lib/libQt5Widgets.so.5+0x510
#78  0x7f4c7048323d in QWidgetPrivate::drawWidget(QPaintDevice*, QRegion const&, QPoint const&, QFlags<QWidgetPrivate::DrawWidgetFlag>, QPainter*, QWidgetRepaintManager*) from /usr/lib/libQt5Widgets.so.5+0x52d
#79  0x7f4c704848f0 in QWidgetPrivate::paintSiblingsRecursive(QPaintDevice*, QList<QObject*> const&, int, QRegion const&, QPoint const&, QFlags<QWidgetPrivate::DrawWidgetFlag>, QPainter*, QWidgetRepaintManager*) from /usr/lib/libQt5Widgets.so.5+0x510
#80  0x7f4c7048323d in QWidgetPrivate::drawWidget(QPaintDevice*, QRegion const&, QPoint const&, QFlags<QWidgetPrivate::DrawWidgetFlag>, QPainter*, QWidgetRepaintManager*) from /usr/lib/libQt5Widgets.so.5+0x52d
#81  0x7f4c704848f0 in QWidgetPrivate::paintSiblingsRecursive(QPaintDevice*, QList<QObject*> const&, int, QRegion const&, QPoint const&, QFlags<QWidgetPrivate::DrawWidgetFlag>, QPainter*, QWidgetRepaintManager*) from /usr/lib/libQt5Widgets.so.5+0x510
#82  0x7f4c7048323d in QWidgetPrivate::drawWidget(QPaintDevice*, QRegion const&, QPoint const&, QFlags<QWidgetPrivate::DrawWidgetFlag>, QPainter*, QWidgetRepaintManager*) from /usr/lib/libQt5Widgets.so.5+0x52d
#83  0x7f4c704848f0 in QWidgetPrivate::paintSiblingsRecursive(QPaintDevice*, QList<QObject*> const&, int, QRegion const&, QPoint const&, QFlags<QWidgetPrivate::DrawWidgetFlag>, QPainter*, QWidgetRepaintManager*) from /usr/lib/libQt5Widgets.so.5+0x510
#84  0x7f4c7048323d in QWidgetPrivate::drawWidget(QPaintDevice*, QRegion const&, QPoint const&, QFlags<QWidgetPrivate::DrawWidgetFlag>, QPainter*, QWidgetRepaintManager*) from /usr/lib/libQt5Widgets.so.5+0x52d
#85  /usr/lib/libQt5Widgets.so.5(+0x16d42c) [0x7f4c7045a42c]
#86  0x7f4c7048b3cb in QWidget::event(QEvent*) from /usr/lib/libQt5Widgets.so.5+0x91b
#87  0x7f4c74661390 in Gui::MainWindow::event(QEvent*) from /run/media/sudhanshu/Thunder/Repos/FreeCAD_sd/build_nonetgen/lib/libFreeCADGui.so+0x6c4
#88  0x7f4c70449702 in QApplicationPrivate::notify_helper(QObject*, QEvent*) from /usr/lib/libQt5Widgets.so.5+0x82
#89  0x7f4c7413ca5e in Gui::GUIApplication::notify(QObject*, QEvent*) from /run/media/sudhanshu/Thunder/Repos/FreeCAD_sd/build_nonetgen/lib/libFreeCADGui.so+0x10e
#90  0x7f4c6f97969a in QCoreApplication::notifyInternal2(QObject*, QEvent*) from /usr/lib/libQt5Core.so.5+0x12a
#91  0x7f4c6f97c183 in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) from /usr/lib/libQt5Core.so.5+0x173
#92  /usr/lib/libQt5Core.so.5(+0x30bbd4) [0x7f4c6f9d2bd4]
#93  /usr/lib/libglib-2.0.so.0(g_main_context_dispatch+0x25c) [0x7f4c6c5d743c]
#94  /usr/lib/libglib-2.0.so.0(+0x9ffa9) [0x7f4c6c624fa9]
#95  /usr/lib/libglib-2.0.so.0(g_main_context_iteration+0x31) [0x7f4c6c5d6221]
#96  0x7f4c6f9d2211 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) from /usr/lib/libQt5Core.so.5+0x61
#97  0x7f4c6f97801c in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) from /usr/lib/libQt5Core.so.5+0x12c
#98  0x7f4c6f9804a4 in QCoreApplication::exec() from /usr/lib/libQt5Core.so.5+0x94
#99  0x7f4c740114f7 in Gui::Application::runApplication() from /run/media/sudhanshu/Thunder/Repos/FreeCAD_sd/build_nonetgen/lib/libFreeCADGui.so+0x23af
#100  ./bin/FreeCAD(+0x91ed) [0x56246fdec1ed]
#101  /usr/lib/libc.so.6(__libc_start_main+0xf2) [0x7f4c6f0e9002]
#102  ./bin/FreeCAD(+0x84ce) [0x56246fdeb4ce]
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bernd
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Re: GSoC2020, FEM: extend examples

Postby bernd » Wed Jul 01, 2020 4:34 am

would you post the FreeCAD file of your hinged beam?
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bernd
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Re: GSoC2020, FEM: extend examples

Postby bernd » Wed Jul 01, 2020 3:52 pm

Sudhanshu wrote:
Tue Jun 30, 2020 11:15 pm
bernd wrote:
Mon Jun 29, 2020 7:52 pm
New example to add: See post https://forum.freecadweb.org/viewtopic. ... 90#p412047 Latest master is needed for this.
After opening the example given in that post, sometime later I get segmentation fault:
Mhh, no crash here, are you able to save it before the crash and to reopen it? You might be able to identify the object which is the culprit.

bernd
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Sudhanshu
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Re: GSoC2020, FEM: extend examples

Postby Sudhanshu » Wed Jul 01, 2020 4:00 pm

bernd wrote:
Wed Jul 01, 2020 4:34 am
would you post the FreeCAD file of your hinged beam?
Here is the example generated by the current code:
Beam_hinged_generated.FCStd
(155.16 KiB) Not downloaded yet

And this is the example I get from your PR:
Beam_hinged_bhb_PR.FCStd
(154.9 KiB) Not downloaded yet
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Sudhanshu
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Re: GSoC2020, FEM: extend examples

Postby Sudhanshu » Wed Jul 01, 2020 4:15 pm

bernd wrote:
Wed Jul 01, 2020 3:52 pm
Sudhanshu wrote:
Tue Jun 30, 2020 11:15 pm
bernd wrote:
Mon Jun 29, 2020 7:52 pm
New example to add: See post https://forum.freecadweb.org/viewtopic. ... 90#p412047 Latest master is needed for this.
After opening the example given in that post, sometime later I get segmentation fault:
Mhh, no crash here, are you able to save it before the crash and to reopen it? You might be able to identify the object which is the culprit.
It crashes when I try to view the geometry which includes the spheres and a plane.
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Re: GSoC2020, FEM: extend examples

Postby HoWil » Wed Jul 01, 2020 6:45 pm

Sudhanshu wrote:
Tue Jun 30, 2020 8:34 am
I have submitted it, for once.
But I can still change things if I want and submit again.
bernd wrote: ping
How about the evaluation form mentors side? Did you get my PM?