Merge pull request #306 from SciML/zero_defaults

[RFC] Remove more unnecessary defaults

Author: ChrisRackauckas

src/Mechanical/Translational/components.jl

@@ -184,7 +184,7 @@ Linear 1D translational damper
     end
     @variables begin
         v(t)
-        f(t) = 0.0
+        f(t)
     end
 
     @components begin

src/Mechanical/Translational/sensors.jl

@@ -40,7 +40,7 @@ Linear 1D position input sensor.
     end
 
     @variables begin
-        s(t) = 0.0
+        s(t)
     end
 
     @equations begin
@@ -71,7 +71,7 @@ Linear 1D position input sensor.
     end
 
     @variables begin
-        a(t) = 0.0
+        a(t)
     end
 
     @equations begin

src/Mechanical/TranslationalPosition/utils.jl

@@ -42,10 +42,10 @@ Partial model for the compliant connection of two translational 1-dim. flanges.
         flange_b = Flange()
     end
     @variables begin
-        v_a(t) = 0.0
-        v_b(t) = 0.0
-        s_rel(t) = 0.0
-        f(t) = 0.0
+        v_a(t)
+        v_b(t)
+        s_rel(t)
+        f(t)
     end
     @equations begin
         D(flange_a.s) ~ v_a
@@ -81,8 +81,8 @@ Partial model for the compliant connection of two translational 1-dim. flanges.
         flange_b = Flange()
     end
     @variables begin
-        delta_s(t) = 0.0
-        f(t) = 0.0
+        delta_s(t)
+        f(t)
     end
     @equations begin
         delta_s ~ flange_a.s - flange_b.s