From 389bf301e81958c5a94d443ef54a87cefea25798 Mon Sep 17 00:00:00 2001
From: Richard Gerum <14153051+rgerum@users.noreply.github.com>
Date: Mon, 18 Dec 2023 17:03:05 -0500
Subject: [PATCH] SemiAffineFiberMaterial accept also "None" as a string

---
 saenopy/materials.py | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/saenopy/materials.py b/saenopy/materials.py
index 2e1f48b..e310693 100644
--- a/saenopy/materials.py
+++ b/saenopy/materials.py
@@ -108,6 +108,12 @@ class SemiAffineFiberMaterial(Material, Saveable):
 
     def __init__(self, k, d_0=None, lambda_s=None, d_s=None):
         super().__init__()
+        if d_0 == "None":
+            d_0 = None
+        if lambda_s == "None":
+            lambda_s = None
+        if d_s == "None":
+            d_s = None
         # parameters
         self.k = k
         self.d_0 = d_0 if d_0 is not None and d_0 >= 0 else None