V2006 Examples 1 - · PDF filePAM-CRASH/PAM-SAFE V2006 Examples Author(s): Support Team. Copyright © ESI Group, 2006. ... Copyright © ESI Group, 2006. All rights reserved. 40 3 nodesTRSFM

1Copyright © ESI Group, 2006. All rights reserved.

PAM-CRASH/PAM-SAFE V2006Examples

Author(s): Support Team


Multi Model Coupling


Multi-Scale features

Multi-Scale Modelling

Main Assembly File

Module Definitions (limited to 2 Modules)

Inter-Model Interface through CNTAC

Inter-Model Connection through MGRID

Running MMC job with pamworld


Commented Example

Truck Frontal Impact vs. ODB barrier

MODULE 100MODULE 100 MODULE 200MODULE 200


Commented Example

Module Input Cards

In-line, INCLU or both


Commented Example

Inter-Model Interface through CNTAC

MOD, General Entity Selection,

END_MOD

SLAVE SELECTIONSLAVE SELECTION

MASTER SELECTIONMASTER SELECTION


Commented Example

Run Coupling Job

Command line: -pamarg

N=n1+n2N=n1+n2


Commented Example

Run Coupling Job

Cluster file supported: -cf cfile

- Virtual Machine of N processors

- Same rule : N=n1+n2

Resulting Files : *.DSY, *.THP, *.out, *.msg

- FILE Names Ignored…

- …replaced by MODULE Names


Material type 304

Tied interface


Material type 304 for TIED interface

Main Features

Material type dedicated to model Glue

Orthotropic properties for tension and compression Orthotropic properties for tension and compression

defined by curves (Young modulus)defined by curves (Young modulus)

Orthotropic properties for shearing direction Orthotropic properties for shearing direction

(directions are uncoupled)(directions are uncoupled)

Strain limit for all directionStrain limit for all directionss for element eliminationfor element elimination

Damage function for all directionDamage function for all directionss


Material 304 definition

Element normalElement normal

Master segmentMaster segment

Slave nodeSlave node

∆∆

Ideal positionIdeal position

Actual positionActual position

hconthcont

hcont - is the user imposed tied thickness, which permits to correct modelisation error between the master and slave part (used by solver for glue response calculation).

cont

u

u

cont

t

t

cont

n

n

h

dx

h

dx

h

dxd

∆=

∆=

∆= γγε d ;d ;

Displacement decomposition



Tensile loadingTensile loading

Tensile unloadingTensile unloading

σσ

Yield curve for tensionYield curve for tension

Compression loadingCompression loading

Compression unloadingCompression unloading

EEtensiontension

EEcompressioncompression

Positive strainPositive strain

+ε+ε−−εε

σσ

Yield curve for compressionYield curve for compression

+ε+ε−−εε

Positive strainPositive strainNegative strainNegative strain


MATER / 3 304MATER / 3 304

NAME NAME TIED materTIED mater--304304$$------55------1010--------55------2020--------55------3030--------55------4040--$ SDMP1 $ SDMP1 hconthcont D D

0.1 1.00.1 1.0$ EC_NN ICUC_NN $ EC_NN ICUC_NN

0.6CURVE 30 0.6CURVE 30 $ ET_NN ICUT_NN $ ET_NN ICUT_NN

0.6CURVE 300.6CURVE 30$ G_NT ICUT_NT $ G_NT ICUT_NT

55$ G_NU ICUT_NU $ G_NU ICUT_NU

55$ LKT_N INT_N INT_NT INT_NU$ LKT_N INT_N INT_NT INT_NU

$ LKT_N INT_N INT_NT INT_NU$ LKT_N INT_N INT_NT INT_NU



$ $

Strain limitStrain limit

--55------7070--------55------8080

CELC_NN ELIC_NNCELC_NN ELIC_NN

CELT_NN ELIT_NNCELT_NN ELIT_NN4.5 4.5

CELT_NT ELIT_NTCELT_NT ELIT_NT

CELT_NU ELIT_NUCELT_NU ELIT_NU

Strain limit for

element elimination

Imposed Displacement

Imposed displacement

Yielding curve

in tension

Result

Max. Strain limit in tension

Definition of strain limit for element elimination (Material 304 definition)

Example-1


Example-2MATER / 3 304MATER / 3 304

NAME NAME TIED materTIED mater--304304$$------55------1010--------55------2020--------55------3030--------55------4040--$ SDMP1 $ SDMP1 hconthcont D D

0.1 1.00.1 1.0$ EC_NN ICUC_NN $ EC_NN ICUC_NN

0.6CURVE 30 0.6CURVE 30 $ ET_NN ICUT_NN $ ET_NN ICUT_NN

0.6CURVE 300.6CURVE 30$ G_NT ICUT_NT $ G_NT ICUT_NT

55$ G_NU ICUT_NU $ G_NU ICUT_NU

55$ LKT_N INT_N INT_NT INT_NU$ LKT_N INT_N INT_NT INT_NU

$ LKT_N INT_N INT_NT INT_NU$ LKT_N INT_N INT_NT INT_NU1 11 1



$ $

Complete Damage and Complete Damage and

element elimination followelement elimination follow

Imposed Displacement

Imposed displacement

LOOKU / 1LOOKU / 1

NAME NAME Damage tableDamage table

$$------55------1010--------55------2020--------55------3030--------55

ARGUMENT 1ARGUMENT 1

2.0 3.0 4.5 5.02.0 3.0 4.5 5.0

ENDEND

FUNCTIONFUNCTION

0.0 0.1 0.7 1.00.0 0.1 0.7 1.0

END END

Damage function for tension

Definition of damage function(Material 304 definition)


Material Type 42

Eroding Contact


Material type 42 and erodingcontact

Impact of a Crash box with Barrier ODB

Material type 41 replaced by material type 42 with equivalentproperties

Application of eroding contact


Contact treatment improvement in case of solid element elimination

Useful in case of crash barriers

Takes into account internal faces of solid element in the initial list of contact segment

CPU increase of 15%

Material type 42 and erodingcontact


MPC Plink Material 224

6DOF Penalty Spring-beam element


Material 224

Main Features:Correspond to Penalty spring-beam element

which connects two nodes at distance≠0Penalty Stiffness Calculation and Damping

displacement/rotation and forces/moments are internally computed

Element can be used to automatic definition of the mechanical properties in MPC PLINK interfaces (in user friendly way)

equivalent mass is automatically computed at the initialization step XMASS and INERTIA are ignored

2 different ways of constrained DOFs are available:only translational degrees of freedom are constrained both rotational and translational degrees of freedom are constrained

2 types of rupture model are implementedUser definedType definition 5

T

S M

RN2N1



MATER / 5 224 7.85000e-06 0 0 0 0

0 0 0 0 0 0 1. 0

NAME mat-spring224

$---5---10----5---20----5---30----5---40----5---50----5---60----5---70----5---80

$ SLFACMT SLFACMR SDMP1 XMASS INERTIA I3DOF IDRUPT

0.1 0.1 0.1 10

$

$---5---10----5---20----5---30----5---40----5---50----5---60----5---70----5---80

PART / 5 PLINK 5

NAME MPC-Plink 224

5. 2 4 1.75 1

END_PART

$

RUPMO / 10 5

NAME Rupture for mater 224

$---5---10----5---20----5---30----5---40----5---50----5---60----5---70----5---80

0.0 0.0 5. 7. 2. 2. 0

30. 20. 2. 2.

$

Normal ForceTorsion Force

Bending Force Shear Force

Penalty scale factor for translation

Penalty scale factor for rotation

Stiffness proportional damping ratio (<1)

Rupture model identifierFlag for releasing rotational

degrees of freedom


Rupture model (type 5):

( ) ( ) ( ) ( ) 0.14321

≤+++aaaa

AFAILB

CEBENDINGFOR

AFAILT

CETORSIONFOR

AFAILS

SHEARFORCE

AFAILN

ENORMALFORC

Shear force rupture limit

Torsion force rupture limit

Normal force rupture limit

Material 224


Monitoring for RUPMO



Activation of monitoring option in case of a « T » section welded with PLinks with rupture model and loaded in the normal direction

No monitoring (default)Monitoring activated

No split visualized after rupture/contour display



Activation of monitoring option in case of a welded boxbeam

crushed by a rigid body





No monitoring (default)

Monitoring activated





No monitoring

Monitoring activated:

No split visualized

Contour displayed


Slipring friction - locking


Slip-Ring Friction Reminder

F1F1

F2F2

F1>F2F1>F2

Friction forceFriction force

ββββββββ

Pulley Rim Formulation:

µ = FRICPR, pulley rim friction

β = contact angle of the belt on the slip-ring

)= µβ ( exp F2 F1


Slip-Ring Locking Example

Bar 11028

Bar 11028

Bar

1102

7B

ar

1102

7

ββββ = PI-αααα

αααα


Slip-Ring Friction Example (2/2)

0.20.2

11


Slip-Ring Locking Example (1/2)

0: 0: LockingLocking EnabledEnabled (Dflt.)(Dflt.)

1: 1: LockingLocking DisabledDisabled ((oldold

behaviorbehavior))

FRACT x L L 0<

ReminderReminder ::


Slip-Ring Locking Example (2/2)


Nodal Face Damping


Nodal Face Damping Example (1/2)

PerturbationPerturbation

Drag force coeff. For Drag force coeff. For variousvarious bodiesbodies

Air Air DensityDensity (MM,KG,MS)(MM,KG,MS)

Face Face DampingDamping


Nodal Face Damping Example (2/2)

PerturbationPerturbation

Without face Without face

dampingdamping

With face With face

dampingdamping


3D Boundary Condition

Reaction Forces


Reaction forces

can by easily evaluated for all Nodes with applied 3D boundary condition (DIS3D, VEL3D, ACC3D, RAN3D, RAV3D and RAC3D) as

/SECFO -> SUPPORT

Reaction Forces in the Nodes with 3DBC

3D Boundary Condition

Prescribed Displacement

Rigid body

COG

Group of

Nodes with 3D displacement

Comparison between Reaction Force in loaded

end and Contact Force (Rigid-plate & Beam)


Stiffness scale factor contour plot

OCTRL /

GLBTHP DFLT DMSC

SHLPLOT STSC

SOLPLOT STSC

END_OCTRL

TCTRL /

INITIAL 0.

NODAL YES

DYNA_MASS_SCALE 0.00130 10. 0

STIFFNESS_SCALE 0.00135 0.75

END_TCTRL

File: ballimpact2_05.pc

Stiffness scale factor contour

Stiffness scale test – rigid ball impacts a thick plate

In time 0 s In time 1 s

TimeTime step step affectedaffected via via StiffnessStiffness andand Dynamic Dynamic

Mass ScalingMass Scaling

Pamview shows stifness scale

factor for each element (not affected

elements has value 1).

Applicable for Shell and Solid materials: 102, 103, 105, 106, 107, 108, 109 nad 1, 2, 7, 16


3-nodes TRSFM

Transformation is defined by 3 sets of 3 nodes


3 nodes TRSFM

TRSFM test – simple impact test

Impactor transformation = Rotation and scaling

TRSFM /

NAME Impactor_Transformation

PART 4000

END

NPOS 4024 4023 4081 5024 5023 5081 7

MOVE 0.05 1 0 0 0 0

MOVE -0.05 0 1 0 0 0

ROTA -45.0 4035 0 0 1 0 0

END

source nodes N1 =4024 N2 =4023 N3 =4081

destination nodes N1'=5024 N2'=5023 N3'=5081

File: TRSFM_NPOS_MOVE_ROTA.pc

Rigid body plate compress cube element (loaded via CONLO)

Task: It is necessary to transform impactor to the right position and correct its size (via rotation, translation and scaling).

Initial position

After Initialization phase

– impactor occurs in right

position and size

N2’N3’N1’


MADYMO Coupling


MADYMO Coupling

� MADYMO Coupling

Coupling with MADYMO 6.3 version

PAMCRASH and MADYMO may have different

UNIT system, automatic unit conversion done

Supported platforms :

Linux ia32 (GlibC 2.3)

Linux ia64 (GlibC 2.3)

HP-UX ia64


MADYMO Coupling Example

AMS Frontal ImpactAMS Frontal Impact

MADYMO 50th MADYMO 50th

percentile percentile

Hybrid IIIHybrid III

UNIT S.I.UNIT S.I.

UNIT MM KG MS KELVINUNIT MM KG MS KELVIN

Powered byPowered by

VCP 2.5VCP 2.5


Material 22 and 5 - DDM

Dilatation Damage Measure


DDM card :SECFO / 2VOLFRAC

NAME ddm 1

DDM -0.0003

PART 1

END

DDM Dilatation Damage Measure

DDM test on material 22

Result of the test Result of the test -- element stress pressureelement stress pressure

Element

stress

DDM

value

VEL3D

Volumetric tension testVolumetric tension test

DDM Critical

value Vcrit

DDM value is 1

When element pressure falls below Vcrit the

DDM records current volume fraction form the

initialy specified set

(DDM for our case takes the value 0 or 1

because only one element is considered)

DDM evaluated on

the complete PART.

Files: DDM_mat22.pc

Example-1


DDM card :SECFO / 2VOLFRAC

NAME ddm 1

DDM -0.5

PART 1

END

DDM Dilatation Damage Measure

DDM test on material 5

Element

stress

DDM

value

VEL3D

Compression tension test of 12 elements modelCompression tension test of 12 elements model

fixed

12 11 10 9 8 7 6 5 4 3 2 1

Pressure of 3 elements falls below Vcrit

0.3333

0.25

DDM value in case 1 = 4/12 = 0.3333

DDM value in case 2 = 3/12 = 0.25

Where:

Volume of one element = 1

Volume of complete part = 12

Case 1 :Case 2 :

The DDM records the current volume fraction that

falls bellow the Vcrit value of the pressure.

Pressure of 4 elements falls below Vcrit

DDM Critical value

Vcrit

Files: DDM_mat5_12elem.pc

Result of the test Result of the test -- element stress pressureelement stress pressureDDM evaluated on the complete PART.

Example-2

Documents

V2006 Examples 1 - · PDF filePAM-CRASH/PAM-SAFE V2006 Examples Author(s): Support Team. Copyright © ESI Group, 2006. ... Copyright © ESI Group, 2006. All rights reserved. 40 3 nodesTRSFM