fixed Mechanical test and Force component

Author: Brad Carman

src/Mechanical/TranslationalPosition/sources.jl

@@ -6,7 +6,8 @@ Input signal acting as external force on a flange
 @component function Force(; name, use_support = false)
     @named partial_element = PartialElementaryOneFlangeAndSupport2(use_support = use_support)
     @unpack flange = partial_element
-    @named f = RealInput() # Accelerating force acting at flange (= -flange.tau)
-    eqs = [flange.f ~ -f.u]
-    return extend(ODESystem(eqs, t, [], []; name = name, systems = [f]), partial_element)
+    @named input = RealInput() # Accelerating force acting at flange (= -flange.tau)
+    eqs = [flange.f ~ -input.u]
+    return extend(ODESystem(eqs, t, [], []; name = name, systems = [input]),
+                  partial_element)
 end

test/Mechanical/translational.jl

@@ -65,7 +65,7 @@ end
     @named source = Sine(frequency = 3, amplitude = 2)
 
     function simplify_and_solve(damping, spring, body, ground, f, source)
-        eqs = [connect(f.f, source.output)
+        eqs = [connect(f.input, source.output)
                connect(f.flange, body.flange)
                connect(spring.flange_a, body.flange, damping.flange_a)
                connect(spring.flange_b, damping.flange_b, ground.flange)]