Creo/SimulateStructureII:BeamsandFrames
2012 CAE 12-1
Beam elements can be used alone or in conjunction with other model elements (solids and/or shells).
2012 CAE 12-2
Abeamelementisanidealization itismodeledbytheEulerBernoulliequation
orforconstantEI:
TheconventioninCreois,tobeabletouseabeamelementidealization,theratioofthebeamlengthtoitslargestcrosssectionaldimensionshouldbegreaterthan10:1.
2012 CAE 12-3
CreoStructure:BeamsandFramesBeamCoordinateSystems
BACS(BeamActionCoordinateSystem)BSCS(BeamShapeCoordinateSystem)
BasicConcepts(Example:DivingBoard)
Frames2DTruss
2012 CAE 12-4
BeamCoordinateSystems
2012 CAE 12-5
Orientation with respect to the World Coordinate System (WCS)
CreoStructure:BeamsandFramesBeamCoordinateSystems
BACS(BeamActionCoordinateSystem)BSCS(BeamShapeCoordinateSystem)
BasicConcepts(Example:DivingBoard)
Frames2DTruss
2012 CAE 12-6
BACS(BeamActionCoordinateSystem)
2012 CAE 12-7
BACS(cont.)
2012 CAE 12-8
CreoStructure:BeamsandFramesBeamCoordinateSystems
9 BACS(BeamActionCoordinateSystem) BSCS(BeamShapeCoordinateSystem)
BasicConcepts(Example:DivingBoard)
Frames2DTruss
2012 CAE 12-9
BSCS(BeamShapeCoordinateSystem)
2012 CAE 12-10
BSCS axes relative to BACS.The frames coincide when: = DY = DZ = 0
StandardBeamSectionShapesdefinedinBSCS
2012 CAE 12-11
CreoStructure:BeamsandFrames9 BeamCoordinateSystems9 BACS(BeamActionCoordinateSystem)9 BSCS(BeamShapeCoordinateSystem)
BasicConcepts(Example:DivingBoard)
Frames2DTruss
2012 CAE 12-12
Example:DivingBoard
2012 CAE 12-13
An indeterminate cantilever beam
F
16 ft long10 ft to supportRectangular Tube24 in. x 2 in. x 1/8 in. wall thickness
2012 CAE 12-14
Note:Wearenotgoingtobuildamodelofhedivingboardusingprotrusions.
Beamelementidealizationsareallthatwewilluse.
2012 CAE 12-15
New Part "divingboard"/Set-Up/Units/ in-lbf -sec (Note: NOT default)
2012 CAE 12-16
Enter three datum points at (0, 0, 0), (120, 0, 0), and (192, 0, 0).
Offset Csys is used in this example to accomplish this.
2012 CAE 12-17
2012 CAE 12-18
2012 CAE 12-19
Start Creo/Simulate/Structure
2012 CAE 12-20
2012 CAE 12-21
Creo Structure Procedure
a. Select typeb. Define constraintsc. Define load
General Outline
1. Create model
2. Analysis: Run Quick Check
3. Analysis: Run FEA
4. Display results
2012 CAE 12-22
2012 CAE 12-23
2012 CAE 12-24
Enter first elem
ent (Point 0 to Point 1)
2012 CAE 12-25
2012 CAE 12-26
BeamDefinition1. Name2. Type(BeamorTruss)3. References(typeofbeamendpoints)
Select
4. Material5. SelectionofYDirection
Selectionofreferenceframe Identificationofdirection(vector)
6. SectionGeometryandOrientation
2012 CAE 12-27
Beam Definition Window
2012CAE 12-28
Beam Definition Window (cont.)
These define the default Y-direction wrt the selection made in the above pull-down menu
2012CAE 12-29
Beam Definition Window (cont.)
Beam Cross-section Definition
2012 CAE 12-30
Beam Definition Window, Beam Cross-section Definition (cont.)
2012 CAE 12-31
Beam Definition Window (cont.)
BSCS(BeamShapeCoordinateSystem)
2012CAE 12-32
Beam Definition Window (cont.)
2012 CAE 12-33
Beam Releases are used to change the type of connection between adjacent beam elements.For a normal (unreleased connection), all six components of force and bending moment are carried through the connection to the next element.
2012 CAE 12-34
Select Points
2012 CAE 12-35
2012 CAE 12-36
Select Material
2012 CAE 12-37
Selection of Y D
irection Y
is Y, leave it alone
2012 CAE 12-38
Section Beam
Section and Orientation
2012 CAE 12-39
2012 CAE 12-40
2012 CAE 12-41
2012 CAE 12-42
2012 CAE 12-43
2012 CAE 12-44
2012 CAE 12-45
2012 CAE 12-46
Section Beam
Orientation leave it alone
2012 CAE 12-47
Enter second elem
ent (Point 1 to Point 2)
2012 CAE 12-48
2012 CAE 12-49
2012 CAE 12-50
Create Model1. Select type2. Define constraints3. Define loads
9
2012 CAE 12-51
2012 CAE 12-52
2012 CAE 12-53
2012 CAE 12-54
2012 CAE 12-55
2012 CAE 12-56
2012 CAE 12-57
2012 CAE 12-58
2012 CAE 12-59
2012 CAE 12-60
ConstraintsatPNT1
2012 CAE 12-61
2012 CAE 12-62
2012 CAE 12-63
F 2012 CAE 12-64
PNT 1
2012CAE 12-65
2012 CAE 12-66
F 2012 CAE 12-67
x
y
z
Translation
Can translate in x-dir.
F 2012 CAE 12-68
x
y
Rotation
z
Can rotate around z-axisAbout x-axis
About y-axis About z-axis
2012 CAE 12-69
2012 CAE 12-70
2012 CAE 12-71
2012 CAE 12-72
Create Model1. Select type2. Define constraints3. Define loads
9
9
2012 CAE 12-73
2012 CAE 12-74
2012 CAE 12-75
2012 CAE 12-76
2012 CAE 12-77
2012 CAE 12-78
2012 CAE 12-79
Creo Structure Procedure
1. Create model
2. Analysis: Run Quick Check
3. Analysis: Run FEA
4. Display results
General Outline
9
2012 CAE 12-80
Analysis>New Static
2012
CAE 12-81
2012 CAE 12-82
2012 CAE 12-83
2012 CAE 12-84
Why you should always run Quick Check
2012 CAE 12-85
2012 CAE 12-86
Material was not assigned to BEAM2
2012 CAE 12-87
Assign m
aterial. Rerun Q
uick Check.
Creo Structure Procedure
1. Create model
2. Analysis: Run Quick Check
3. Analysis: Run FEA
4. Display results
General Outline
99
2012 CAE 12-88
2012CAE 12-89
Run M
ultipassAdaptive/Set Percent C
onvergence to 1%
2012 CAE 12-90
2012 CAE 12-91
Creo Structure Procedure
1. Create model
2. Analysis: Run Quick Check
3. Analysis: Run FEA
4. Display results
General Outline
999
2012 CAE 12-92
2012 CAE 12-93
2012 CAE 12-94
2012 CAE 12-95
2012 CAE 12-96
2012 CAE 12-97
2012 CAE 12-98
MoreResults:ShearandMomentDiagrams
2012 CAE 12-99
2012 CAE 12-100
2012 CAE 12-101
2012 CAE 12-102
2012 CAE 12-103
2012 CAE 12-104
2012 CAE 12-105
2012 CAE 12-106
2012 CAE 12-107
2012 CAE 12-108
Shear in y-dir, Vy
2012 CAE 12-109
2012 CAE 12-110
Repeat for Moment about z-axis
2012 CAE 12-111
2012 CAE 12-112
2012 CAE 12-113
CreoStructure:BeamsandFrames9 BeamCoordinateSystems9 BACS(BeamActionCoordinateSystem)9 BSCS(BeamShapeCoordinateSystem)
9 BasicConcepts(Example:DivingBoard)
Frames2DTruss
2012 CAE 12-114
Example:2DTruss
2012 CAE 12-115
3 in. XXH pipe
2000 lb
Wecoulddothiswithasetofpointsattheverticesofthetrussbutwewouldonlybeabletoapplyloadsandconstraintsatthosepoints,i.e.,nodistributedloads.
CreateasketchofthetrussusinglinesthatcanbeselectedinFEAasedges.
2012 CAE 12-116
Units=IPS, insert sketched datum
curve
2012 CAE 12-117
2012 CAE 12-118
2012 CAE 12-119
2012 CAE 12-120
2012 CAE 12-121
2012 CAE 12-122
2012 CAE 12-123
2012 CAE 12-124
2012 CAE 12-125
2012
CAE 12-126
3.500 in. OD
0.600 in wall thickness
3 in. XXH
2012 CAE 12-127
Radius NOT Diameter
2012 CAE 12-128
2012 CAE 12-129
2012 CAE 12-130
2012 CAE 12-131
These are not all oriented the same direction
2012 CAE 12-132
2012 CAE 12-133
Put y-dir in BACS in z-dir of WCS
2012 CAE 12-134
2012 CAE 12-135
Now all are oriented the same direction
Create Model1. Select type2. Define constraints3. Define loads
9
2012 CAE 12-136
Datum
>Point
2012 CAE 12-137
2012 CAE 12-138
(Add datum
point) Datum
>Point>On Vertex
2012 CAE 12-139
2012 CAE 12-140
2012 CAE 12-141
2012 CAE 12-142
2012 CAE 12-143
2012 CAE 12-144
2012 CAE 12-145
2012 CAE 12-146
Create Model1. Select type2. Define constraints3. Define loads
9
9
2012 CAE 12-147
Createtwoloadsets. Thefirstset[applied]containsauniformverticallydownload.
Thesecondsetisthegravityload.
2012 CAE 12-148
2012 CAE 12-149
2012 CAE 12-150
2012 CAE 12-151
2012 CAE 12-152
2012 CAE 12-153
2012 CAE 12-154
2012 CAE 12-155
Add second load set.
2012 CAE 12-156
2012 CAE 12-157
2012 CAE 12-158
2012 CAE 12-159
2012 CAE 12-160
2012 CAE 12-161
2012 CAE 12-162
2012 CAE 12-163
2012 CAE 12-164
2012 CAE 12-165
2012 CAE 12-166
Creo Structure Procedure
1. Create model
2. Analysis: Run Quick Check
3. Analysis: Run FEA
4. Display results
General Outline
9
2012 CAE 12-167
2012 CAE 12-168
Analyses>(Q
uick Check)
2012 CAE 12-169
Creo Structure Procedure
1. Create model
2. Analysis: Run Quick Check
3. Analysis: Run FEA
4. Display results
General Outline
99
2012 CAE 12-170
2012 CAE 12-171
2012 CAE 12-172
Creo Structure Procedure
1. Create model
2. Analysis: Run Quick Check
3. Analysis: Run FEA
4. Display results
General Outline
999
2012 CAE 12-173
2012 CAE 12-174
VonMises Stress
2012 CAE 12-175
2012 CAE 12-176
2012 CAE 12-177
2012 CAE 12-178
Check convergence
2012 CAE 12-179
2012 CAE 12-180
Displacement
2012 CAE 12-181
2012 CAE 12-182
2012 CAE 12-183
2012 CAE 12-184
2012 CAE 12-185
2012 CAE 12-186
2012 CAE 12-187
2012 CAE 12-188
2012 CAE 12-189
Showresults(displacementanimations)forthreeseparatecases:
1. AppliedLoad
2. GravityLoad
3. TotalLoad
2012 CAE 12-190
Appendix
3DTrusswithtwoConstraintSets
2012 CAE 12-191
3DFrame
2012 CAE 12-192
Begin with the 2D frame and make a copy.
Objective
Determinetheeffectofafailedsupport(settling)onthestressesinaspace(3D)frame.
2012 CAE 12-193
2012 CAE 12-194
Recall the objective of the analysis: determine the effect of a failed support (settling) on the stresses in a space (3D) frame.
Repeat with different constraints.
Why?
What does computer-aided static analysis simulation enable that was previously beyond the capabilities of non-computer-aided analysis?
2012 CAE 12-195
AtlanticCity,30October2003
Fourdead,
twentytwoinjured.
2012 CAE 12-196
http://www.news12.com/NJ/topstories/article?id=93728#
garagecollapse2003.asx
2012 CAE 12-197
2012 CAE 12-198
Comparemaximumstresses.
2012 CAE 12-199
Original (No settling)
2012 CAE 12-200
Original (No settling)
456 psi
2012 CAE 12-201
Modified (Settling)
2012 CAE 12-202
Modified (Settling)
2012 CAE 12-203
Modified (Settling)
3334 psi
2012 CAE 12-204
Compare maximum stresses:No settling 456 psiSettling (0.1 in.) 3334 psi
%631456
4563334 =
2012 CAE 12-205
Creo/Simulate Structure II:Beams and FramesSlide Number 2Slide Number 3Creo Structure: Beams and FramesBeam Coordinate SystemsCreo Structure: Beams and FramesBACS (Beam Action Coordinate System)BACS (cont.)Creo Structure: Beams and FramesBSCS (Beam Shape Coordinate System)Standard Beam Section Shapes defined in BSCS Creo Structure: Beams and FramesExample: Diving BoardSlide Number 14Slide Number 15Slide Number 16Slide Number 17Slide Number 18Slide Number 19Slide Number 20Slide Number 21Slide Number 22Slide Number 23Slide Number 24Slide Number 25Slide Number 26Beam DefinitionSlide Number 28Slide Number 29Slide Number 30Slide Number 31BSCS (Beam Shape Coordinate System)Slide Number 33Slide Number 34Slide Number 35Slide Number 36Slide Number 37Slide Number 38Slide Number 39Slide Number 40Slide Number 41Slide Number 42Slide Number 43Slide Number 44Slide Number 45Slide Number 46Slide Number 47Slide Number 48Slide Number 49Slide Number 50Slide Number 51Slide Number 52Slide Number 53Slide Number 54Slide Number 55Slide Number 56Slide Number 57Slide Number 58Slide Number 59Slide Number 60Constraints at PNT 1Slide Number 62Slide Number 63Slide Number 64Slide Number 65Slide Number 66Slide Number 67Slide Number 68Slide Number 69Slide Number 70Slide Number 71Slide Number 72Slide Number 73Slide Number 74Slide Number 75Slide Number 76Slide Number 77Slide Number 78Slide Number 79Slide Number 80Slide Number 81Slide Number 82Slide Number 83Slide Number 84Slide Number 85Slide Number 86Slide Number 87Slide Number 88Slide Number 89Slide Number 90Slide Number 91Slide Number 92Slide Number 93Slide Number 94Slide Number 95Slide Number 96Slide Number 97Slide Number 98More Results:Shear and Moment DiagramsSlide Number 100Slide Number 101Slide Number 102Slide Number 103Slide Number 104Slide Number 105Slide Number 106Slide Number 107Slide Number 108Slide Number 109Slide Number 110Slide Number 111Slide Number 112Slide Number 113Creo Structure: Beams and FramesExample: 2D TrussSlide Number 116Slide Number 117Slide Number 118Slide Number 119Slide Number 120Slide Number 121Slide Number 122Slide Number 123Slide Number 124Slide Number 125Slide Number 126Slide Number 127Slide Number 128Slide Number 129Slide Number 130Slide Number 131Slide Number 132Slide Number 133Slide Number 134Slide Number 135Slide Number 136Slide Number 137Slide Number 138Slide Number 139Slide Number 140Slide Number 141Slide Number 142Slide Number 143Slide Number 144Slide Number 145Slide Number 146Slide Number 147Slide Number 148Slide Number 149Slide Number 150Slide Number 151Slide Number 152Slide Number 153Slide Number 154Slide Number 155Slide Number 156Slide Number 157Slide Number 158Slide Number 159Slide Number 160Slide Number 161Slide Number 162Slide Number 163Slide Number 164Slide Number 165Slide Number 166Slide Number 167Slide Number 168Slide Number 169Slide Number 170Slide Number 171Slide Number 172Slide Number 173Slide Number 174Von Mises StressSlide Number 176Slide Number 177Slide Number 178Slide Number 179Slide Number 180Slide Number 181Slide Number 182Slide Number 183Slide Number 184Slide Number 185Slide Number 186Slide Number 187Slide Number 188Slide Number 189Slide Number 190Appendix3D FrameObjectiveSlide Number 194Slide Number 195Slide Number 196Slide Number 197Slide Number 198Compare maximum stresses.Slide Number 200Slide Number 201Slide Number 202Slide Number 203Slide Number 204Slide Number 205
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