From 8717edb98944f76f28580c3e2577e5df7b7fcf3d Mon Sep 17 00:00:00 2001
From: Bernd Hahnebach <bernd@bimstatik.org>
Date: Sat, 24 Mar 2018 22:39:04 +0100
Subject: [PATCH] FEM: material task panel, workaround to be able to set
 poissons ratio to 0

---
 src/Mod/Fem/femguiobjects/_ViewProviderFemMaterial.py | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/src/Mod/Fem/femguiobjects/_ViewProviderFemMaterial.py b/src/Mod/Fem/femguiobjects/_ViewProviderFemMaterial.py
index 6b45de6837c1..09b0002c09ab 100644
--- a/src/Mod/Fem/femguiobjects/_ViewProviderFemMaterial.py
+++ b/src/Mod/Fem/femguiobjects/_ViewProviderFemMaterial.py
@@ -310,6 +310,11 @@ def pr_changed(self, value):
                 material = self.material
                 material['PoissonRatio'] = unicode(value)
                 self.material = material
+        elif value == 0:
+            # PoissonRatio was set to 0.0 what is possible
+            material = self.material
+            material['PoissonRatio'] = unicode(value)
+            self.material = material
 
     def tc_changed(self, value):
         old_tc = Units.Quantity(self.material['ThermalConductivity']).getValueAs("W/m/K")