From 31c1f15c9b2c9a5b1330eea9c8d0293b7c213926 Mon Sep 17 00:00:00 2001
From: Bernd Hahnebach <bernd@bimstatik.org>
Date: Sun, 25 Sep 2016 19:36:55 +0100
Subject: [PATCH] FEM: nonlinear materials, add check if nonlinear material
 object is in the analysis when solver is set to nonlinear materials

---
 src/Mod/Fem/FemTools.py | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/Mod/Fem/FemTools.py b/src/Mod/Fem/FemTools.py
index 2dae38fe7..0354ac89c 100644
--- a/src/Mod/Fem/FemTools.py
+++ b/src/Mod/Fem/FemTools.py
@@ -328,6 +328,8 @@ class FemTools(QtCore.QRunnable, QtCore.QObject):
                     message += "Frequency analysis: Solver has no EigenmodeLowLimit.\n"
                 elif not hasattr(self.solver, "EigenmodesCount"):
                     message += "Frequency analysis: Solver has no EigenmodesCount.\n"
+            if hasattr(self.solver, "MaterialNonlinearity") and self.solver.MaterialNonlinearity == "nonlinear" and not self.materials_nonlinear:
+                message += "Solver is set to nonlinear materials, but there is no nonlinear material in the analysis. \n"
         # mesh
         if not self.mesh:
             message += "No mesh object defined in the analysis\n"