*HEADING
Connector element verification
Locking of flexible arms
**
*********************
** Core
*NODE, NSET=Core
**
**
*NODE, NSET=CoreRef
**
*ELEMENT,TYPE=S4R, ELSET=Core
*SHELL SECTION, ELSET=Core, MATERIAL=Nominal
.65,
**
***************************
**
*NODE, NSET=Payload1
*NODE, NSET=Payload1Ref
**
*ELEMENT,TYPE=C3D8R, ELSET=Payload1
*SOLID SECTION, ELSET=Payload1, MATERIAL=Nominal
**
*NODE, NSET=CoreArm1
**
*ELEMENT, TYPE=B31, ELSET=CoreArm1
*BEAM SECTION, SECTION=RECT, ELSET=CoreArm1, MATERIAL=Nominal
1., 1.
**
*NODE, NSET=Arm1
*NGEN, NSET=Arm1
*NSET, NSET=Payload1Att
**
*ELEMENT, TYPE=B31, ELSET=InnerArm1
*ELGEN, ELSET=InnerArm1
*ELEMENT, TYPE=B31, ELSET=MiddleArm1
*ELGEN, ELSET=MiddleArm1
*ELEMENT, TYPE=B31, ELSET=OuterArm1
*ELGEN, ELSET=OuterArm1
*ELSET, ELSET=Arm1
InnerArm1, MiddleArm1, OuterArm1
*BEAM SECTION, SECTION=RECT, ELSET=Arm1, MATERIAL=Arm
1., 1.
**
*RIGID BODY, REFNODE=Payload1Ref, POSITION=CENTER OF MASS,
ELSET=Payload1, TIENSET=Payload1Att
**
*********************************
**
*SYSTEM
*NODE, NSET=Payload2
*NODE, NSET=Payload2Ref
**
*ELEMENT,TYPE=C3D8R, ELSET=Payload2
*SOLID SECTION, ELSET=Payload2, MATERIAL=Nominal
**
*NODE, NSET=CoreArm2
**
*ELEMENT, TYPE=B31, ELSET=CoreArm2
*BEAM SECTION, SECTION=RECT, ELSET=CoreArm2, MATERIAL=Nominal
1., 1.
**
*NODE, NSET=Arm2
*NGEN, NSET=Arm2
*NSET, NSET=Payload2Att
**
*ELEMENT, TYPE=B31, ELSET=InnerArm2
*ELGEN, ELSET=InnerArm2
*ELEMENT, TYPE=B31, ELSET=MiddleArm2
*ELGEN, ELSET=MiddleArm2
*ELEMENT, TYPE=B31, ELSET=OuterArm2
*ELGEN, ELSET=OuterArm2
*ELSET, ELSET=Arm2
InnerArm2, MiddleArm2, OuterArm2
*BEAM SECTION, SECTION=RECT, ELSET=Arm2, MATERIAL=Arm
1., 1.
**
*RIGID BODY, REFNODE=Payload2Ref, POSITION=CENTER OF MASS,
ELSET=Payload2, TIENSET=Payload2Att
**
********************************
**
*SYSTEM
*NODE, NSET=Payload3
*NODE, NSET=Payload3Ref
**
*ELEMENT,TYPE=C3D8R, ELSET=Payload3
*SOLID SECTION, ELSET=Payload3, MATERIAL=Nominal
**
*NODE, NSET=CoreArm3
**
*ELEMENT, TYPE=B31, ELSET=CoreArm3
*BEAM SECTION, SECTION=RECT, ELSET=CoreArm3, MATERIAL=Nominal
1., 1.
**
*NODE, NSET=Arm3
*NGEN, NSET=Arm3
*NSET, NSET=Payload3Att
**
*ELEMENT, TYPE=B31, ELSET=InnerArm3
*ELGEN, ELSET=InnerArm3
*ELEMENT, TYPE=B31, ELSET=MiddleArm3
*ELGEN, ELSET=MiddleArm3
*ELEMENT, TYPE=B31, ELSET=OuterArm3
*ELGEN, ELSET=OuterArm3
*ELSET, ELSET=Arm3
InnerArm3, MiddleArm3, OuterArm3
*BEAM SECTION, SECTION=RECT, ELSET=Arm3, MATERIAL=Arm
1., 1.
**
*RIGID BODY, REFNODE=Payload3Ref, POSITION=CENTER OF MASS,
ELSET=Payload3, TIENSET=Payload3Att
**
********************************
**
*SYSTEM
*ORIENTATION, DEFINITION=COORDINATES, NAME=ArmHinge
**
** CoreArm - InnerArm
*ELEMENT, TYPE=CONN3D2, ELSET=CoreInner
*CONNECTOR SECTION, ELSET=CoreInner, BEHAVIOR=CoreInner
join, revolute
ArmHinge,
*CONNECTOR BEHAVIOR, NAME=CoreInner
*CONNECTOR LOCK, COMPONENT=4, LOCK=4
**
** InnerArm - MiddleArm
*ELEMENT, TYPE=CONN3D2, ELSET=InnerMiddle
*CONNECTOR SECTION, ELSET=InnerMiddle, BEHAVIOR=InnerMiddle
join, revolute
ArmHinge,
*CONNECTOR BEHAVIOR, NAME=InnerMiddle
*CONNECTOR LOCK, COMPONENT=4, LOCK=4
*CONNECTOR ELASTICITY, COMPONENT=4, NONLINEAR
**-1.5e7, -.7
** -.5e7,  0.
**  .5e7,  .7
**   0.,  1.4
**-1.5e7,  -0.78539
**-.5e7,   0.
** .5e7,  0.78539
** 0.,    1.57078
**
** MiddleArm - OuterArm
*ELEMENT, TYPE=CONN3D2, ELSET=MiddleOuter
*CONNECTOR SECTION, ELSET=MiddleOuter, BEHAVIOR=MiddleOuter
join, revolute
ArmHinge,
*CONNECTOR BEHAVIOR, NAME=MiddleOuter
*CONNECTOR LOCK, COMPONENT=4, LOCK=4
*CONNECTOR ELASTICITY, COMPONENT=4, NONLINEAR
**-1.5e7,  -0.78539
**-.5e7,   0.
** .5e7,  0.78539
** 0.,    1.57078
**-3.e7, -.7
**-1.e7,  0.
** 1.e7,  .7
**   0.,  1.4
**
*****************************
**
*ELSET, ELSET=CoreAll
Core, CoreArm1, CoreArm2, CoreArm3
*RIGID BODY, REFNODE=CoreRef, POSITION=CENTER OF MASS,
ELSET=CoreAll
**
*NSET, NSET=NodeAll
Core, CoreRef, Payload1, Payload1Ref, CoreArm1, Arm1, Payload1Att,
Payload2, Payload2Ref, CoreArm2, Arm2, Payload2Att,
Payload3, Payload3Ref, CoreArm3, Arm3, Payload3Att,
**
*INITIAL CONDITIONS, TYPE=ROTATING VELOCITY
NodeAll, -5., 0., 0., 0.
0., 0., 0., 0., 0., 1.
**
**************************
*MATERIAL, NAME=Nominal
*ELASTIC
1., 0.25
*DENSITY
780.
**
*MATERIAL, NAME=Arm
*ELASTIC
1.e9, 0.25
*DENSITY
7800.
*ELSET,ELSET=connectors
CoreInner,InnerMiddle,MiddleOuter
**************************
*STEP,INC=1000,NLGEOM
*DYNAMIC, NOHAF, DIRECT
0.005,1.25
**
**************************
**************************
*OUTPUT,FIELD,FREQUENCY=20
*NODE OUTPUT
U,V,A
*NSET, NSET=OUT
Core
*OUTPUT,HISTORY,FREQUENCY=10
*NODE OUTPUT, NSET=OUT
U,V,A
*ELEMENT OUTPUT, ELSET=connectors
CP,
CRF,
*EL FILE,ELSET=connectors,FREQUENCY=10
CP,CRF
*El PRINT,ELSET=connectors
CSLST,
CP,
CRF,
*END STEP