Gasket
Conrbination
ANSVSHuid
Pore-pre^ssLire
User(Matrix
Nonlinspringi39Combination40氏便volute1jgint了
Springdamper14
Elementtypereferencenumber
Apply
Cancel
OnlystructuralelementtypesareshownLibraryofElementTypes
Elementtyppnumber
OKIApplyI
IStructuralMass
3Dmass21
LinkBeam
PipeSolid
三
▼
3Dmass21
31
Cancel|
Help|I
AElementTypes
D®finedElemontTypci:
Typ@1BEAM3
Type2COMBIN14
Type3MASS21
Options...
DeleteI
Help
ACOMBIN14elementtypeoptions
OptionsforCOMBIN14,ElementTypeRef.No.2
SolutiontypeKI
|LinearSolution
DOFselectforIDbehavior
K2
|Use2/3DDOFopt
DOFselectionfor2D+3D
K3
12-Dlongitudinal
OK|
Cancel
Help
AMASS21elementtypeoptionsI
(4)定义实常数
ANSYSMainMenu:
PreprocessorRealConstants~Add/Edit/Delete...Add…选
择Type2COMBIN14OKRealConstantsSetNo.1,K:
35001.62(前悬架支撑的弹
簧系数k1=35001.62)tOk;Add…选择Type1BEAM3OKRealConstants
SetNo.2AREA:
5,IZZ:
5,HEIGHT:
5(梁单元参数,可以为任意值)tOKtAdd…t
选择Type3MASS21tOKtRealConstantsSetNo.:
3,MASS:
1440.57,
IZZ:
4742.27(质点的实常数)tOKtAdd…t选择Type1BEAM3tOKtRealConstantsSetNo.:
4(第4号实常数)AREA:
5,IZZ:
5,HEIGHT:
5(梁单元参数,可以为任意值)tOKtAdd…t选择Type2COMBIN14tOKtRealConstantsSet
k2=37918.42)tClose(关闭
No.:
5(第5号实常数),K:
37918.42(后悬架支撑的弹簧系数
RealConstants窗口)
AElementTypefor宀
Cancel
Type
1
BEAtVJ
Type
2
CXJMBINiq
Type
ChooseelementWpe:
r
/\Re^lCon^tsntSetNumberforMASS21
EleinentTypeReferenceMu.i
ReiilConstiintSetNo.
RealConsumsfor2DF/asswithRour>-lnenia(KEYO-Tf^-3;
2-DmassMASSJ/I4QL吁7
RotaryinertiaaboutZ1ZZ4742.27
Help
OK|Appty匚anceljHelp
ARealConstantsforBEAM?
ElementT/peReferenceNo.1RealConstantSetNo.
Cross-sectionailareaARiA
AreamomentofinertiaIZZ
TotalbeamheightHSGHT
SheardeflectionconstantSHEAR?
InitialstrainISTRN
Addedmass/unitlergthADDMAS
OKApply5心1
r
/\RzlConstantSetNumberforCOMBIM14
—・
ElementTypeReferen匚uNo.2
RealConstantSetNo.
b
SpringsnstantK37918.42
DampingcoefficientCV1o
Nonlineardamping匚oeffCV20
InitialLengthILENo
InitialForceIFORo
QIC|ApplyICancelHelp
(5)定义材料参数
ANSYSMainMenu:
PreprocessorMaterialPropsMaterialModelsStructural
LinearElasticIsotropicEX=1.91E11,PRXY=0.3。
OKDensity(定义材料密度)宀
DENS:
0,fOKt关闭材料定义窗口
ADefineMaterialiMod创Behavior
—
MateriiailEditFworitpHelp
MaterialModelsDefined
MMfrialModelsAwIflbie
I冃忖「/I何cxipiNiEtlFVrT
寒LinearIsotropic
aFwcrit严
虐SUuclufali>Linear
■Basdc
色Onliotropic
#AnijoTropicjbKonliried'i$Den^ty
・ThermalExpacjion.DUiirnpirig
匚irwl+twbr"k厂l;jtwi*
2J
ADensityforMalen^lNumber1
DeruityforMdteridlNumber1
Temperatures
DENS
AddTemperatureDdeteremperature
OK
Cancel
Gr^ph
Help
(6)构造车体模型
生成节点
ANSYSMainMenu:
PreprocessorfModelingfCreatefNodesfInActiveCSfNodenumber:
1,X,Y,ZLocationinactiveCS:
0,0,0Apply。
同样输入其余4个节点坐标(最左端为起始点,坐标分别为(0,0.3,0)、(1.4,0.3,0)、(3.1,0.3,0)、(3.1,0,0)OK
ACreateNodzinActiveCoominateSystem
|
|N|CreateNodesinActiveCoordinatES/stem
NODFNoderximb^r
X,Vr7Lorationin^rtiveCS
|T1\
03
THXYTH¥7,TH7X
Rotdlicni.dtyie^i)
OK
Apply
Cancel|
Help|
生成元素并分配材料类型、实常数
ANSYSMainMenu:
Preprocessor宀ModelingCreateElementsElemAttributes
tType2COMBIN14fOK
ANSYSMainMenu:
PreprocessorModelingCreateElementsAutoNumbered
fThruNodes宀点击1,2号节点,生成第1个单元宀OK
ANSYSMainMenu:
PreprocessorfModelingfCreatefElementsfElem
AttributesfMAT,1,TYPE,1Beam3,REAL,2fOK
ANSYSMainMenu:
PreprocessorfModelingfCreatefElementsfAutoNumberedfThruNodesf点击2,3号节点,生成第2个单元
ANSYSMainMenu:
PreprocessorfModelingfCreatefElementsfElemAttributesfType3MASS21REAL,3fOK
ANSYSMainMenu:
PreprocessorfModelingfCreatefElementsfAutoNumberedfThruNodesf点击3号节点,生成第3个单元
ANSYSMainMenu:
PreprocessorfModelingfCreatefElementsfElemAttributesfType1BEAM3REAL,4fOK
ANSYSMainMenu:
PreprocessorfModelingfCreatefElementsfAutoNumberedfThruNodesf点击3,4号节点,生成第4个单元
ANSYSMainMenu:
PreprocessorfModelingfCreatefElementsfElemAttributesfType2COMBIN14REAL,5fOK
ANSYSMainMenu:
PreprocessorfModelingfCreatefElementsfAutoNumbered
点击4,5号节点,
ThruNodesf
生成第
5个单元
LerrentsfromNodes
(■Pick
3
Loop
Maxinf.uru
MxnjJT.Lzn:
ListofItens
佩I
LlementsfromNodes
Eltifneinsfurn
厂mFiclc
•卩icit
SingleC
「Pol宇gcrtL「Citc*1F厂Loop
Ccunt
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Define^ttribute^for#lemen也
tTYPE]ElemenlLtypenumber
1BEAM3
rIMAT]Mateii1
J
[REAL]Realconstantnumber
4d
[ESV&]Elementcoordinatesyt
0▼
[SECNUM]Sectionnumber
Mcwifd^fin^d
[TSHAP]|Targetelement.sJliape
Straightline
"l
|L理:
1cz|
Help
AFementAttrbirjps
AFementMrbirw?
(7)模型加约束
Minimum
NedeMo.
i*Li幵ofItenia
MinrTne
Cancel
^FFiy
Help
ElementsfrorrNodes
(•Pick
(«*Single
CP^Iycorj
「Loop
CUnpick
CClrc^Je
Coun匸=0
l-faxiimit■20
MiniiEUJi=1
NsdeNea=
(«LiatofTtRitB
「Min,HsiiMrTnc
ANSYSMainMenu:
SolutionDefineLoadsApply-StructuralDisplacement
OnNodes宀选取1,5号节点OK选择Lab2:
UX,UYApply;选取3号节点tOKt选择Lab2:
UXOK
ApplyUbROTonNcdesi
i*txcl
CnguH
i*Single
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厂F^I^QSi
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[U]ApplyDisplacements(U.RO1)onNodes
Ij»h?
DDF左tob?
rnn^trsineri
Applydb
IfConstant^aluethen
VAIIJTDi^pIrKPinfiitvfllue
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三3二
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t»Pi=krUnplci
f*Sin-^lr厂Bon
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Ml且Lnun-1L
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tiLutcfIxerij
CMin^WexFTne
(8)计算分析
ANSYSMainMenu:
SolutionAnalysisTypeNewAnalysisModalOK
ANASYSMainMenu:
SolutionfAnalysisTypefAnalysisOptionsf[MODOPT]BLOCKLanczos,No.ofmodestoextractsExpandmodeshapes:
Yes,Numberofmodesto
expand:
0fOKf单出BlockLanczosMethod窗口中:
StartFreq:
0.001,EndFreq:
100fOK
ANASYSMainMenu:
SolutionfSolvefCurrentfOK
■
ABlockLanczosMethodt
-ii'
■—■一■—
[MOOOPT]OptionsforBlockLanczosModalAnalysis
FREQ3SrarrFreq(initialshift)
0.001
FREQ三EndFrequency
仙
NrmkeyNormalizemodesliapes
|Tomassmatrix
OK
Cancel
Help
J
1
i
■
ANote
Solutionisdone!
IClose1
1
1
(9)计算结果
ANSYSMainMenu:
GeneralPostprocfListResultsfDetailedsummary(读取模态频率)
r»n
A*S1ATUSCommand**—
File
ABBREUTATIQNSTATUS-
Jk
S
flBBREU
SPRING
SAUE^DB
SAUE
RESUM.DB
RESUME
QUIT
Fnc_/EXIT
PQNRffiPH
FhC_/GAfiPHICE
PftRPMETER
STATUS*(
EPARAMETERSDEFINED)
(INCLUDING
4INTERNALPARAHETERS)
NAHE
UALUE
TYPEDIMENSIONS
FREQ1
09H54S1593
SCALAR
FREO2
1
1.15758565
SCftLfiR
-
(10)命令流
/PREP7
进入前处理
ANTYPE,MODAL设定为模态分析
MP,EX,1,1.9E11定义1号材料的弹性模量
MP,DENS,1,0定义1号材料的密度,设置为零,则材料对振动不起作用
MP,PRXY,1,0.3设定1号材料的泊松比
ET,1,BEAM3选取单元类型1(梁)
ET,2,COMBIN14,,,2选取单元类型2(弹簧)
ET,3,MASS21,,,3选取单元类型3(质量块),设置KEYOPT(3)=3
R,1,35001.62设定实常数No.1,前悬架支撑的弹簧系数k1=2400
R,2,5,5,5
设定实常数No.2,梁单元所需要的参数(这里可以设定为一个任意值)
R,3,1440.57,4742.27设定实常数No.3,MASS=100,IZZ=1600,当KEYOPT(3)=3时
R,4,5,5,5
设定实常数No.4,梁参数(任意)
R,5,37918.42设定实常数No.5,后悬架支撑的弹簧系数k2=2600
N,1生成节点1
N,2,,0.3
生成节点2
N,3,1.4,0.3生成节点3
N,4,3.1,0.3生成节点4
N,5,3.1
TYPE,2
E,1,2
MAT,1
TYPE,1
REAL,2
生成节点5
设定弹簧单元
生成前悬架支撑