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