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Fixed unit mismatches in Shaft Wizard

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jrheinlaender 2013-03-22 08:12:05 +04:30
parent 3a06458a2c
commit d6dadf0a3b
2 changed files with 19 additions and 16 deletions
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2
src/Mod/PartDesign/WizardShaft/SegmentFunction.py
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@ -285,7 +285,7 @@ class TranslationFunction:
transfunc = None # The segment function for translations of the shaft (the bending line)
intfunc = None # The divisors, a vector of tuples (location, divisor)
boundaries = {} # The boundary conditions, dictionary of location:[left boundary, right boundary]
module = 210000.0
module = 2.1E12
name = "w"
def __init__(self, f, E, d, tangents, translations):

33
src/Mod/PartDesign/WizardShaft/Shaft.py
View File

@ -256,7 +256,7 @@ class Shaft:
del (self.diagrams[self.w[ax].name])
return
self.diagrams[self.w[ax].name] = Diagram()
self.diagrams[self.w[ax].name].create(text[0], self.w[ax], self.getLengthTo(len(self.segments)) / 1000.0, text[1], text[2], 1000.0, text[3], text[4], 1.0, 30)
self.diagrams[self.w[ax].name].create(text[0], self.w[ax], self.getLengthTo(len(self.segments)) / 1000.0, text[1], text[2], 1000.0, text[3], text[4], 1000.0, 30)
elif which in self.sigmaNstr:
ax = self.sigmaNstr.index(which)
text = self.sigmaNstrings[ax]
@ -269,7 +269,7 @@ class Shaft:
del (self.diagrams[self.sigmaN[ax].name])
return
self.diagrams[self.sigmaN[ax].name] = Diagram()
self.diagrams[self.sigmaN[ax].name].create(text[0], self.sigmaN[ax], self.getLengthTo(len(self.segments)) / 1000.0, text[1], text[2], 1000.0, text[3], text[4], 1.0, 10)
self.diagrams[self.sigmaN[ax].name].create(text[0], self.sigmaN[ax], self.getLengthTo(len(self.segments)) / 1000.0, text[1], text[2], 1000.0, text[3], text[4], 1.0E-6, 10)
elif which in self.sigmaBstr:
ax = self.sigmaBstr.index(which)
text = self.sigmaBstrings[ax]
@ -282,7 +282,7 @@ class Shaft:
del (self.diagrams[self.sigmaB[ax].name])
return
self.diagrams[self.sigmaB[ax].name] = Diagram()
self.diagrams[self.sigmaB[ax].name].create(text[0], self.sigmaB[ax], self.getLengthTo(len(self.segments)) / 1000.0, text[1], text[2], 1000.0, text[3], text[4], 1.0, 20)
self.diagrams[self.sigmaB[ax].name].create(text[0], self.sigmaB[ax], self.getLengthTo(len(self.segments)) / 1000.0, text[1], text[2], 1000.0, text[3], text[4], 1.0E-6, 20)
def addTo(self, dict, location, value):
if location not in dict:
@ -454,6 +454,7 @@ class Shaft:
areas = [None, None, None]
areamoments = [None, None, None]
bendingmoments = [None, None, None]
torquemoments = [None, None, None]
for ax in range(3):
@ -528,25 +529,27 @@ class Shaft:
# Areas and area moments
location = 0.0
areas[ax] = IntervalFunction()
areamoments[ax] = IntervalFunction()
torquemoments[ax] = IntervalFunction()
areas[ax] = IntervalFunction() # A [m²]
areamoments[ax] = IntervalFunction() # I [m⁴]
bendingmoments[ax] = IntervalFunction() # W_b [m³]
torquemoments[ax] = IntervalFunction() # W_t [m³]
for i in range(len(self.segments)):
od = self.segments[i].diameter
id = self.segments[i].innerdiameter
od = self.segments[i].diameter/1000.0
id = self.segments[i].innerdiameter/1000.0
length = self.segments[i].length/1000.0
areas[ax].addInterval(location, length, math.pi/4.0 * (math.pow(self.segments[i].diameter, 2.0) - math.pow(self.segments[i].innerdiameter, 2.0)))
areamoment = math.pi/32.0 * (math.pow(self.segments[i].diameter, 4.0) - math.pow(self.segments[i].innerdiameter, 4.0)) / self.segments[i].diameter
areas[ax].addInterval(location, length, math.pi/4.0 * (math.pow(od, 2.0) - math.pow(id, 2.0)))
areamoment = math.pi/64.0 * (math.pow(od, 4.0) - math.pow(id, 4.0))
areamoments[ax].addInterval(location, length, areamoment)
torquemoments[ax].addInterval(location, length, 2 * areamoment)
bendingmoments[ax].addInterval(location, length, areamoment / (od / 2.0))
torquemoments[ax].addInterval(location, length, 2 * (areamoment / (od / 2.0)))
location += length
# Bending line
if ax > 0:
if len(tangents[ax])+ len(translations[ax]) == 2:
# TODO: Get Young's module from material type instead of using 210000 N/mm²
self.w[ax] = TranslationFunction(self.M[ax].negated() * 1000.0, 210000, areamoments[ax], tangents[ax], translations[ax])
# TODO: Get Young's module from material type instead of using 210000 N/mm² = 2.1E12 N/m²
self.w[ax] = TranslationFunction(self.M[ax].negated(), 2.1E12, areamoments[ax], tangents[ax], translations[ax])
self.w[ax].name= self.wstr[ax]
self.parent.updateButton(3, ax, not self.w[ax].isZero())
else:
@ -557,9 +560,9 @@ class Shaft:
self.sigmaN[ax].name = self.sigmaNstr[ax]
self.parent.updateButton(4, ax, not self.sigmaN[ax].isZero())
if ax == 0:
self.sigmaB[ax] = StressFunction(self.M[ax] * 1000.0, torquemoments[ax])
self.sigmaB[ax] = StressFunction(self.M[ax] , torquemoments[ax])
else:
self.sigmaB[ax] = StressFunction(self.M[ax] * 1000.0, areamoments[ax])
self.sigmaB[ax] = StressFunction(self.M[ax], bendingmoments[ax])
self.sigmaB[ax].name = self.sigmaBstr[ax]
self.parent.updateButton(5, ax, not self.sigmaB[ax].isZero())