use rel_compr_stiffness and rel_damping from yaml file

ufechner7 · Apr 21, 2024 · bd96eb8 · bd96eb8
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diff --git a/CHANGELOG.md b/CHANGELOG.md
@@ -1,5 +1,9 @@
 # Changelog
 
+### KiteModels v0.5.12 - 2024-04-14
+#### Changed
+- use `rel_compr_stiffness` and `rel_damping` from settings.yaml 
+
 ### KiteModels v0.5.11 - 2024-04-14
 #### Changed
 - update KiteUtils to v0.6.7

diff --git a/data/settings.yaml b/data/settings.yaml
@@ -60,6 +60,8 @@ bridle:
     d_line:    2.5         # bridle line diameter                  [mm]
     l_bridle: 33.4         # sum of the lengths of the bridle lines [m]
     h_bridle:  4.9         # height of bridle                       [m]
+    rel_compr_stiffness: 0.25 # relative compression stiffness of the kite springs
+    rel_damping: 6.0          # relative damping of the kite spring (relative to main tether)
 
 kcu:
     kcu_mass: 8.4                # mass of the kite control unit   [kg]

diff --git a/docs/Project.toml b/docs/Project.toml
@@ -6,6 +6,6 @@ KiteUtils = "90980105-b163-44e5-ba9f-8b1c83bb0533"
 
 [compat]
 julia = "1.9, 1.10"
-KiteUtils = "0.6"
+KiteUtils = "0.6.10"
 KitePodModels = "0.3"
 Documenter = "0.27"
diff --git a/src/KPS4.jl b/src/KPS4.jl
@@ -228,9 +228,9 @@ The result is stored in the array s.forces.
     norm1 = norm(segment)
     unit_vector = segment / norm1
 
-    k1 = 0.25 * k # compression stiffness kite segments
-    k2 = 0.1 * k  # compression stiffness tether segments
-    c1 = 6.0 * c  # damping kite segments
+    k1 = s.set.rel_compr_stiffness * k # compression stiffness kite springs
+    k2 = 0.1 * k                       # compression stiffness tether springs
+    c1 = s.set.rel_damping * c         # damping kite springs
     spring_vel   = unit_vector ⋅ rel_vel
     if (norm1 - l_0) > 0.0
         if i > segments  # kite springs