Spring II
This is an example for a spring-mass simulation. Its purpose is to learn about discrete elements. A nonlinear elastic material with user defined force-displacement curve is used. Download is available in the download section of this document.
Keywords
Keywords
This example has been taken from the introductory class of Prof. Dr. Ala Tabiei. Example name: spring1.k
The used Keywords in alphabetical order.
*BOUNDARY_PRESCRIBED_MOTION_NODE *BOUNDARY_SPC_NODE *CONTROL_TERMINATION *DATABASE_BINARY_D3PLOT *DATABASE_DEFORC *DATABASE_HISTORY_NODE_SET *DATABASE_NODOUT *DEFINE_CURVE *ELEMENT_DISCRETE *ELEMENT_MASS *END *KEYWORD *MAT_SPRING_NONLINEAR_ELASTIC *NODE *PART *SECTION_DISCRETE *SET_NODE_LIST *TITLE
Reduced Input
Reduced Input
This example has been taken from the introductory class of Prof. Dr. Ala Tabiei. Example name: spring1.k
*Node and *Element Cards are removed.
*KEYWORD
*TITLE
SPRING-MASS Simulation
$
$ learn discrete elements, material for discrete elements
$ units: mm, s, ton, N
$ A. Tabiei, 3/10/98
$
*CONTROL_TERMINATION
$ ENDTIM
10.000E+00
$---+----1----+----2----+----3----+----4----+----5----+----6----+----7----+----8
*DATABASE_HISTORY_NODE_SET
1
*SET_NODE_LIST
1
2 3 4
*DATABASE_NODOUT
0.101E-01
*DATABASE_DEFORC
0.101E-01
$---+----1----+----2----+----3----+----4----+----5----+----6----+----7----+----8
*DATABASE_BINARY_D3PLOT
$ DT/CYCL
0.100E+00
$---+----1----+----2----+----3----+----4----+----5----+----6----+----7----+----8
*PART
Spring
$ PID SID MID
2 3 2
$---+----1----+----2----+----3----+----4----+----5----+----6----+----7----+----8
*SECTION_DISCRETE
$ SID DRO KD V0 CL FD
3 0 0.000E+00 0.000E+00 0.000E+00 0.000E+00
$ CDL TDL
0.000E+00 0.000E+00
$---+----1----+----2----+----3----+----4----+----5----+----6----+----7----+----8
*MAT_SPRING_NONLINEAR_ELASTIC
$ MID LCD
2 2
$---+----1----+----2----+----3----+----4----+----5----+----6----+----7----+----8
*NODE
$ NODE X Y Z
1 0.000000000E+00 0.000000000E+00 0.000000000E+00
2 0.100000000E+02 0.000000000E+00 0.000000000E+00
3 0.200000000E+02 0.000000000E+00 0.000000000E+00
4 0.300000000E+02 0.000000000E+00 0.000000000E+00
5 0.400000000E+02 0.000000000E+00 0.000000000E+00
$---+----1----+----2----+----3----+----4----+----5----+----6----+----7----+----8
*ELEMENT_DISCRETE
$ EID PID N1 N2 VID S PF OFFSET
1 2 1 2 0 0.1000000E+01 0 0.0000000E+00
2 2 2 3 0 0.1000000E+01 0 0.0000000E+00
3 2 3 4 0 0.1000000E+01 0 0.0000000E+00
4 2 4 5 0 0.1000000E+01 0 0.0000000E+00
$---+----1----+----2----+----3----+----4----+----5----+----6----+----7----+----8
*ELEMENT_MASS
$ EID NID MASS
5 2 5.0000002E-04
6 3 5.0000002E-04
7 4 5.0000002E-04
8 5 5.0000002E-04
9 1 5.0000002E-04
$---+----1----+----2----+----3----+----4----+----5----+----6----+----7----+----8
*BOUNDARY_SPC_NODE
$ NID/NSID CID DOFX DOFY DOFZ DOFRX DOFRY DOFRZ
1 0 1 1 1 1 1 1
$---+----1----+----2----+----3----+----4----+----5----+----6----+----7----+----8
*BOUNDARY_PRESCRIBED_MOTION_NODE
$ NODE DOF VAD LCID SF
5 1 2 1 1.00E+00
$---+----1----+----2----+----3----+----4----+----5----+----6----+----7----+----8
*DEFINE_CURVE
1
0.0 0.0
10.0000000000000E+00 10.00000000000E+00
$---+----1----+----2----+----3----+----4----+----5----+----6----+----7----+----8
*DEFINE_CURVE
2
$ DISPLACEMENT FORCE
-2.5000000000000E+00 -0.20000000000E+00
-2.0000000000000E+00 -0.17500000000E+00
-1.5000000000000E+00 -0.15000000000E+00
-1.0000000000000E+00 -0.10000000000E+00
-0.5000000000000E+00 -0.02500000000E+00
0.0 0.0
0.50000000000000E+00 0.025000000000E+00
1.00000000000000E+00 0.100000000000E+00
1.50000000000000E+00 0.150000000000E+00
2.00000000000000E+00 0.175000000000E+00
2.50000000000000E+00 0.200000000000E+00
$---+----1----+----2----+----3----+----4----+----5----+----6----+----7----+----8
*END
Figures
Figures
This example has been taken from the introductory class of Prof. Dr. Ala Tabiei. Example name: spring1.k
Animated Result
Animated Result
This example has been taken from the introductory class of Prof. Dr. Ala Tabiei. Example name: spring1.k
Download
Download
This example has been taken from the introductory class of Prof. Dr. Ala Tabiei. Example name: spring1.k
