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Table of Contents

• Chapter 1  Preface
  • 1.1  Contact information
  • 1.2  Getting started
  • 1.3  Understanding the Toolbox architecture
    • 1.3.1  Layers of code
    • 1.3.2  Infos in stack
    • 1.3.3  Global variables
  • 1.4  Typesetting conventions and scientific notations
  • 1.5  Release notes for SDT 6.0 and FEMLink 3.3
    • 1.5.1  Key features
    • 1.5.2  Detail by function
    • 1.5.3  Notes by MATLAB release
  • 1.6  Release notes for SDT 5.3 and FEMLink 3.2
    • 1.6.1  Key features
    • 1.6.2  Detail by function
    • 1.6.3  Notes by MATLAB release
  • 1.7  Release notes for SDT 5.2 and FEMLink 3.1
    • 1.7.1  Key features
    • 1.7.2  Detail by function
    • 1.7.3  Notes by MATLAB release
  • 1.8  Release notes for SDT 5.1 and FEMLink 3.0
    • 1.8.1  Key features
    • 1.8.2  Detail by function
    • 1.8.3  Notes by MATLAB release
• Chapter 2  Structural dynamic concepts
  • 2.1  I/O shape matrices
  • 2.2  Normal mode models
  • 2.3  Damping
    • 2.3.1  Viscous damping in the normal mode model form
    • 2.3.2  Damping in finite element models
  • 2.4  State space models
  • 2.5  Complex mode models
  • 2.6  Pole/residue models
  • 2.7  Parametric transfer function
  • 2.8  Non-parametric transfer function
• Chapter 3  Modal test tutorial
  • 3.1  iiplot interface tutorial
    • 3.1.1  The main figure
    • 3.1.2  The curve stack
    • 3.1.3  Handling what you display, axes and channel tabs
    • 3.1.4  Importing FRF data
    • 3.1.5  SDT 5 compatibility
  • 3.2  Modal test : geometry declaration and data acquisition/import
    • 3.2.1  Sensor/shaker configurations
    • 3.2.2  Data acquisition
    • 3.2.3  Operational deflection shapes
  • 3.3  Identification of modal properties
    • 3.3.1  The idcom interface
    • 3.3.2  The id_rc procedure step by step
    • 3.3.3  Background theory
    • 3.3.4  When id_rc fails
    • 3.3.5  Direct system parameter identification algorithm
    • 3.3.6  Orthogonal polynomial identification algorithm
  • 3.4  MIMO, Reciprocity, State-space, ...
    • 3.4.1  Multiplicity (minimal state-space model)
    • 3.4.2  Reciprocal models of structures
    • 3.4.3  Normal mode form
• Chapter 4  Test/analysis correlation tutorial
  • 4.1  Topology correlation and test preparation
    • 4.1.1  Defining sensors in the FEM model
    • 4.1.2  Sensor/shaker placement
  • 4.2  Test/analysis correlation
    • 4.2.1  Shape based criteria
    • 4.2.2  Energy based criteria
    • 4.2.3  Correlation of FRFs
  • 4.3  Expansion methods
    • 4.3.1  Underlying theory for expansion methods
    • 4.3.2  Basic interpolation methods for unmeasured DOFs
    • 4.3.3  Subspace based expansion methods
    • 4.3.4  Model based expansion methods
  • 4.4  Structural dynamic modification
• Chapter 5  FEM tutorial
  • 5.1  FE mesh and the feplot interface
    • 5.1.1  The main feplot figure
    • 5.1.2  Pointers to the figure and the model
    • 5.1.3  The property figure
    • 5.1.4  Direct declaration of geometry (truss example)
    • 5.1.5  Modal test geometry declaration
    • 5.1.6  Building models with femesh
    • 5.1.7  Importing models from other codes
    • 5.1.8  Importing model matrices from other codes
    • 5.1.9  feplot FAQ
  • 5.2  FEM problem formulations
    • 5.2.1  3D elasticity
    • 5.2.2  2D elasticity
    • 5.2.3  Acoustics
    • 5.2.4  Classical lamination theory
    • 5.2.5  Piezo-electric volumes
    • 5.2.6  Geometric non-linearity for hyperelasticity
    • 5.2.7  Hyperelasticity
    • 5.2.8  Gyroscopic effects
    • 5.2.9  Centrifugal follower forces
  • 5.3  Other information needed to specify a problem
    • 5.3.1  Material and element properties
    • 5.3.2  Other information stored in the stack
    • 5.3.3  Cases GUI
    • 5.3.4  Boundary conditions and constraints
    • 5.3.5  Loads
  • 5.4  Sensors
    • 5.4.1  Sensor data structure and init commands
    • 5.4.2  Topology correlation and observation matrix
  • 5.5  Computing/post-processing the response
    • 5.5.1  Simulate GUI
    • 5.5.2  Static responses
    • 5.5.3  Normal modes (partial eigenvalue solution)
    • 5.5.4  State space and other modal models
    • 5.5.5  Viewing deformation
    • 5.5.6  Manipulating large finite element models
• Chapter 6  Advanced FEM tools
  • 6.1  Model reduction theory
    • 6.1.1  General framework
    • 6.1.2  Normal mode models
    • 6.1.3  Static correction to normal mode models
    • 6.1.4  Static correction with rigid body modes
    • 6.1.5  Other standard reduction bases
    • 6.1.6  Substructuring
    • 6.1.7  Reduction for parameterized problems
  • 6.2  Superelements and CMS
    • 6.2.1  Superelements in a model
    • 6.2.2  SE data structure reference
    • 6.2.3  An example of SE use for CMS
    • 6.2.4  Obsolete superelement information
    • 6.2.5  Sensors and superelements
  • 6.3  Model parameterization with upcom
    • 6.3.1  Theoretical framework
    • 6.3.2  upcom parameterization for full order models
    • 6.3.3  Getting started with upcom
    • 6.3.4  Reduction for variable models
    • 6.3.5  Predictions of the response using upcom
  • 6.4  Finite element model updating
    • 6.4.1  Error localization/parameter selection
    • 6.4.2  Update based on frequencies
    • 6.4.3  Update based on FRF
  • 6.5  Handling models with piezoelectric materials
    • 6.5.1  Theoretical elements
    • 6.5.2  Sample plate with 4 piezo patches
    • 6.5.3  Sample piezo with volume elements
  • 6.6  Viscoelastic modeling tools
  • 6.7  Representing viscoelastic materials
    • 6.7.1  Introducing your own nomograms
    • 6.7.2  Selecting a material for your application
  • 6.8  Viscoelastic device meshing tools
    • 6.8.1  Generation of sandwich models
    • 6.8.2  Meshing foam fillings
    • 6.8.3  Exporting submeshes to NASTRAN
  • 6.9  Data structure reference
    • 6.9.1  Dynamic stiffness coefficients zCoefFcn
    • 6.9.2  Format reference
    • 6.9.3  Input definitions
    • 6.9.4  Sensor definitions
    • 6.9.5  Response post-processing options
  • 6.10  Sample parametric analysis step by step
    • 6.10.1  Model parameterization
    • 6.10.2  Parametric model generated within NASTRAN (fo_by_set DMAP)
    • 6.10.3  Parametric model from NASTRAN element matrices
    • 6.10.4  Full and reduced order solution within SDT
  • 6.11  Fluid/structure coupling
    • 6.11.1  Summary of theory
  • 6.12  NASTRAN DMAP routines
  • 6.13  Advanced connection models
    • 6.13.1  Screw models
    • 6.13.2  Physical point with rotations
  • 6.14  Validation examples
    • 6.14.1  Validity of free and constrained layer models
• Chapter 7  Developer information
  • 7.1  Nodes
    • 7.1.1  Node matrix
    • 7.1.2  Coordinate system handling
  • 7.2  Model description matrices
  • 7.3  Material property matrices
  • 7.4  Element property matrices
  • 7.5  DOF definition vector
  • 7.6  FEM model structure
  • 7.7  FEM stack and case entries
  • 7.8  FEM result data structure
  • 7.9  Curves and data sets
  • 7.10  DOF selection
  • 7.11  Node selection
  • 7.12  Element selection
  • 7.13  Constraint and fixed boundary condition handling
  • 7.14  Creating new elements (advanced tutorial)
    • 7.14.1  Conventions
    • 7.14.2  Basic commands of an element function
  • 7.15  Legacy information
    • 7.15.1  Legacy 2D elements
    • 7.15.2  Rules for elements in of_mk_subs
  • 7.16  Generic compiled linear and non-linear elements
    • 7.16.1  Principles
    • 7.16.2  What is done in the element function
    • 7.16.3  What is done in the element property function
    • 7.16.4  Generic multi-physic linear elements
    • 7.16.5  Generic RHS computations
    • 7.16.6  Non-linear iterations, what is done in of_mk
  • 7.17  Variable names and progamming rules
• Chapter 8. Element reference
  • bar1
  • beam1, beam1t
    • beam1
    • beam1t
  • celas
  • dktp
  • fsc
  • hexa8, penta6, tetra4, and other 3D volumes
  • integrules
    • Gauss
    • bar1,beam1,beam3
    • t3p,t6p
    • q4p, q5p, q8p
    • tetra4,tetra10
    • penta6, penta15
    • hexa8, hexa20, hexa21, hexa27
    • BuildNDN
  • mass1,mass2
  • m_elastic
    • [Database,Dbval] [-unit TY] [,MatiD]] Name
    • 1 : standard isotropic
    • 2 : acoustic fluid
    • 3 : 3-D anisotropic solid
    • 4 : 2-D anisotropic solid
    • 5 : shell orthotropic material
  • m_hyper
    • 1 : Nominal hyperelastic material
  • m_piezo, p_piezo
    • 1 : Simplified 3D piezoelectric properties
    • 2 : General 3D piezo
    • 3 : General 3D piezo, e matrix
    • Shell element properties
  • p_beam
    • [Database,Dbval] ...
    • Beam format description and subtypes
    • 1 : standard
  • p_shell
    • [Database,Dbval] ...
    • Shell format description and subtypes
    • 1 : standard isotropic
    • 2 : composite
  • p_solid
    • [Database,Dbval] ...
    • Subtype 1 : 3D volume element
    • Subtype 2 : 2D volume element
    • Subtype 3 : ND-1 coupling element
  • p_spring
    • [Database,Dbval] ...
    • 1 : standard
    • 2 : bush
  • p_super
    • [Database,Dbval] ...
    • Subtype 1 : simple weighting coefficients
    • Subtype 2 : matrix type redefinition and weighting coefficients
  • quad4, quadb, mitc4
    • quad4
    • quadb
  • q4p, q8p, t3p, t6p and other 2D volumes
  • rigid
  • tria3, tria6
• Chapter 9. Function reference
  • abaqus
    • read [*.fil, *.inp]
    • write
    • conv
  • ans2sdt
    • BuildUp
    • conv
    • read
    • Def
    • Write
  • basis
    • p = basis(x,y)
    • [nodeGlob,bas]=basis('nodebas',model)
    • cGL= basis('trans [ ,t][ ,l][,e]',bas,node,DOF)
    • nodeGlobal = basis('gnode',bas,nodeLocal)
    • [p,nodeL] = basis(node)
  • commode
  • comstr
    • istrue=comstr(Cam,'string')
    • [opt,CAM,Cam]=comstr(CAM,'string','format')
    • [CAM,Cam] = comstr(CAM,ind)
    • opt = comstr(CAM,[-1 default])
    • date = comstr(CAM,[-3])
    • CAM = comstr(CAM,[-4 nc ])
    • comstr(Matrix,[-5 fid],'format')
    • st1=comstr(st1,-7,'string')
    • comstr(tt,-17,'type')
  • db, phaseb
  • fe2ss
    • Free [ , Float] [ , -dterm] EigOpt
    • CraigBampton nm
    • Example
  • fe2xf
    • frfzr [-file FileName]
    • direct [Full,First [,zCoef0], Iter, Reduced]
    • frfpolesearch
    • PoleRange [,real]
    • zCoef
  • fecom
    • AddNode,Line
    • Anim[,One][,Time,Freq][,col][nCycle i, Start i, Step]
    • Anim[Movie i,Avi]
    • caxi, ca+
    • ch[,c] [i,+,-,+i,-i],
    • ColorData [,seli] [Type] [,-alphai]
    • Color [,seli] [Edge ..., Face ..., Bar, Legend]
    • ColorAlpha
    • ga i
    • go i
    • Head [,freq, po, fs]
    • Info
    • InitDef[ , Back]
    • load, InitModel
    • InitSens
    • Plot
    • Pro
    • Renderer[Opengl,zBuffer,Painters][,default]
    • Save, FileExport
    • Scale [ ,Defs, Dofi, equal, match, max, one]
    • ScaleColor
    • Sel [ElementSelectors, GroupAll, Reset]
    • SetObject i [,ty j] [,def k] [,ch k] [,sel s, sen s]
    • Show [patch,line,sensor,arrow, ...]
    • Sub [i j ], SubIso, SubStep
    • Text [off, Node [,Select], Dof d]
    • TitOpt [ ,c] i
    • Triax [ , On, Off]
    • Undef [ , Dot, Line]
    • View [...]
  • femesh, feutil
    • ;
    • Add FEeli FEelj, AddSel
    • AddNode [,New] [, From i] [,epsl val]
    • AddSet [NodeId, EltId, FaceId]
    • AddTest [,-EGID i][,NodeShift,Merge,Combine]
    • Divide div1 div2 div3
    • DivideInGroups
    • DivideGroup i ElementSelectors
    • EltId
    • Extrude nRep tx ty tz
    • GetDof, FindDof ElementSelectors
    • Find [Elt,El0] ElementSelectors
    • FindNode Selectors
    • GetEdge[Line,Patch]
    • GetElemF
    • GetLine
    • GetNode Selectors
    • GetNormal[Elt,Node][,Map]
    • GetPatch
    • Info [ ,FEeli, Nodei]
    • Join [,el0] [group i, EName]
    • model [,0]
    • Matid,ProId,MPID
    • ObjectBeamLine i, ObjectMass i
    • ObjectHoleInPlate
    • Object[Quad,Beam,Hexa] MatId ProId
    • Object[Arc, Annulus, Circle,Cylinder,Disk]
    • ObjectDivide
    • Optim [Model, NodeNum, EltCheck]
    • Orient, Orient i [ , n nx ny nz]
    • Plot [Elt, El0]
    • Quad2Tria, quad42quadb, etc.
    • RefineBeam l
    • Remove[Elt,El0] ElementSelectors
    • Renumber
    • RepeatSel nITE tx ty tz
    • Rev nDiv OrigID Ang nx ny nz
    • RotateSel OrigID Ang nx ny nz
    • Sel [Elt,El0] ElementSelectors
    • SelGroup i, SelNode i
    • SetGroup [i,name] [Mat j, Pro k, EGID e, Name s]
    • StringDOF
    • SymSel OrigID nx ny nz
    • TransSel tx ty tz
    • UnJoin Gp1 Gp2
  • feutilb
    • AddNode
    • dTKT
    • GeomRB
    • Match
    • MpcFromMatch
    • TKT
  • feplot
    • mesh
    • arrow
    • text
    • def
    • mdl
    • sel
    • sens
  • fesuper
    • Get,Set ...
    • SE ...
    • SEAdd ...
    • SEAssemble ...
    • SEDispatch ...
    • SEIntNode ...
    • SESelAsSE ...
    • SERemove
    • SERenumber
  • fevisco
    • AddMat,Par2Visc
    • Fluid [merge,matrix,makereduced, ...]
    • Feplot
    • MakeModel [Matid i]
    • Range[Vect,Face,Grid,CubeEdge,rand]
    • MakeSandwich layers
    • StrainMap
    • Test
    • WriteInclude
    • [Write,Build] Step12
    • ceig, direct
    • NASTRAN
    • HandNomo FileName
  • fe_c
    • Example
  • fe_case
    • Build Sec epsl d
    • ConnectionEqualDOF
    • ConnectionPivot
    • ConnectionSurface
    • cyclic (SDT)
    • FixDof
    • KeepDof
    • map
    • MPC
    • par (SDT)
    • RBE3 (SDT)
    • rigid
    • Sens ... (SDT)
    • un=0
    • Example
  • fe_ceig
  • fe_coor
  • fe_curve
    • Commands
    • bandpass Unit f_min f_max
    • datatype [,cell]
    • getcurve
    • h1h2 input_channels
    • noise
    • plot
    • resspectrum [True, Pseudo] [Abs., Rel.] [Disp., Vel., Acc.]
    • returny
    • testframe
    • set
    • testFunc
    • test[Ramp,Ricker]
    • timefreq
    • Window Nb_pts [None, Hanning, Hamming, Exponential] Arg
  • fe_cyclic
    • Assemble [,-struct]
    • Build
    • Display
    • Eig
    • TEig
    • Nast
    • NastPreStress
    • NastTeigMK
    • Reduce
  • fe_eig
    • Example
  • fe_exp
    • Interpolation
    • Modal, Serep
    • Static
    • Dynamic, RBDE
    • MDRE, MDRE-WE
  • fe_gmsh
    • Example
    • config
    • Read
  • fe_load
    • DofLoad, DOFSet
    • FVol
    • FSurf
  • fe_mat
    • Convert,Unit [ ,label]
    • Get[pl,il]
    • Type
    • ElemP
  • fe_mk, fe_mknl
    • Init
    • Assemble [ , NoT]
    • MatType
    • Opt
  • fe_norm
  • fe_reduc
    • CraigBampton NM Shift Ouput
    • dynamic w
    • flex [,nr]
    • rb
    • static [,struct]
  • fe_sens
    • indep
    • mseq
    • [ma,mmif]
    • basis
    • cta
    • info
    • tdof
    • links
    • laser
    • near,rigid,arigid
    • stick
    • wireexp
  • fe_simul
  • fe_stres
    • ene [m,k]ElementSelection
    • stress
  • fe_time,of_time
    • Solvers and options
    • Input and output options
    • newmark
    • dg
    • NLNewmark
    • staticNewton
    • hht
    • of_time
  • idcom
    • e [ ,i w]
    • ea
    • er [num i, f w]
    • est[ ,local,localpole]
    • eup dstep fstep [local, num i ]
    • eopt [local, num i ]
    • find
    • f i
    • dspi nm
    • mass i
    • poly nn nd
    • [Table,Tex] IIpo
  • idopt
  • id_dspi
  • id_nor
  • id_poly
  • id_rc, id_rcopt
    • xf
    • w
    • po, new_po
    • IDopt
    • dstep, fstep (for id_rc)
    • step, indpo (for id_rcopt)
    • res
    • xe
  • id_rm
  • iicom
    • ;
    • ad i, adc i
    • cax i, ca+
    • ch+, ch-, ch[+,-]i
    • ch i, chc i
    • Curve[Load,Save,Reset, ...]
    • ga i
    • head [Main,Text,Clear]
    • IIpo [ ,1], cIIpo[ ,1,tog]
    • IIx:name [On,Off,Only], cIIx ...
    • info
    • ods
    • PoleLine [ ,c] [ ,3]
    • Print, Preprint
    • Pro
    • Show Type
    • Sub[Save,Set]
    • Sub [MagPha, i j k[ ,nd][ ,step]]
    • TitOpt [ ,c]i
    • xlin,xlog, [ ,all] ...
    • wmin, wmax, w0, ...
  • iimouse
    • On,Off
    • clip [Start,Undo]
    • zoom
    • Cursor
    • key
    • move
    • text
    • view,cv
  • iiplot
    • Abs,Pha,Phu,Rea,Ima,R&I,Nyq
    • Local Nyquist
    • MMIF, MMIF forces, AMIF, SUM, CMIF, SumI
    • Pole, Freq/damp,Residues
    • Error, Quality
  • ii_cost
  • ii_mac
    • COMAC [ ,M][,A,B][,N][,S][,E] [,sort][,table,tex]
    • MAC [ ,PairA,PairB][Plot,Table,Tex,Thtml]
    • MAC Auto[A,B][Plot,Table,Tex,Thtml]
    • MACCo [ ,M] [,ns]
    • MAC [ ,M] Error [,Table,Tex,Thtml]
    • Mac M ...
    • POC [,Pair[A,B]][Plot,Table,Tex,Thtml]
    • Rel [,scaled][,m]
    • va
    • vb
    • m,k,kd
    • mc
    • sens
    • T
  • ii_mmif
    • MMIF
    • CMIF
    • AMIF
    • SUM, SUMI, SUMA
    • NODEMIF
    • INTEGRATE
    • DOUBLEINT
    • VEL
    • ACC
    • FFT,FFTSHOCK
    • IFFT,IFFTSHOCK
    • OCTGEN, OCTAVE
  • ii_plp
  • ii_poest
  • ii_pof
  • m_visco, mvisco_3m
    • default,info,database,dbval
    • dispmat
    • nomo
    • at
    • interp [,-unit SI] [,showrange]
    • WriteNastran
  • nasread
    • Bulk file
    • OUTPUT2 binary (FEMLink)
    • BuildUp,BuildOrLoad (FEMLink)
    • OUTPUT4 binary
    • .f06 output (obsolete)
  • naswrite
    • EditBulk
    • model
    • node,elt
    • dmig
    • job
    • Wop4
    • WriteFreqLoad
    • Write[Curve,Set,SetC,Uset]
    • WritePLIL
  • nor2res, nor2ss, nor2xf
    • w,ind,fc,type
    • DEF,MODEL
    • om,ga,pb,cp
    • res
    • ss
    • xf
    • Theory
  • of2vtk
    • FileName :
    • model :
    • vali :
  • ofact
    • umfpack
    • pardiso
    • spfmex
    • sp_util
    • method
    • fact
    • solve
    • clear
  • perm2sdt
    • Model files
    • Merging model
    • Result files
    • Matrix files
  • psi2nor
  • qbode
  • res2nor
  • res2ss, ss2res
    • res2ss
    • ss2res
  • res2tf, res2xf
  • rms
  • samcef
    • read
    • write
    • conv
  • setlines
  • sdtdef
  • sdth
  • sp_util
  • stack_get,stack_set,stack_rm
  • ufread
    • 15 Grid point
    • 55 Analysis data at node
    • 58 Function at nodal DOF
    • 82, Trace Line
    • 151, Header
    • 780, 2412, Elements
    • 773, 1710 Material Database
    • 772, 788, 789, 2437, Element Properties
    • 2414, Analysis data
  • ufwrite
  • upcom
    • Clear, Load File , Save File
    • Assemble [,m,k] [,coef cur],[,delta i][,NoT][,Point]
    • ComputeMode [ ,full,reduced] [,eig_opt]
    • ComputeModal [ ,full,reduced]
    • Ener [m, k]
    • Fix
    • Get
    • femesh
    • IndInElt
    • Info [ ,par,elt]
    • Opt
    • Par Coef
    • ParRed
    • ParStack [add type values,reset]
    • ParTable
    • PlotElt
    • Profile [,fix]
    • SensMode [,reduced]
    • SetNominal [ , t groups]
    • Up.copt
    • Up.mind, Up.file, Up.wd, mi, me, ki, ke
    • Up.Node, Up.Elt, Up.pl, Up.il, Up.DOF, Up.Stack
    • Up.sens
  • up_freq, up_ifreq
  • up_ixf
  • v_handle
  • xfopt
    • Response data
    • Shapes at DOFs
    • _FunType, _DataType, _FieldType
• Bibliography
• Index