Spinning Bar
A bar is given an initial angular velocity and its free rotation is computed. To eliminate hourglassing, a fully-integrated solid element formulation is used. Download is available in the download section of this document.
Keywords
Keywords
This example has been taken from the introductory class of John D. Reid. Example name: spinning-bar.k
The used Keywords in alphabetical order.
*CONTROL_ACCURACY *CONTROL_ENERGY *CONTROL_OUTPUT *CONTROL_TERMINATION *CONTROL_TIMESTEP *DATABASE_BINARY_D3PLOT *DATABASE_GLSTAT *DATABASE_HISTORY_NODE *DATABASE_MATSUM *DATABASE_NODOUT *ELEMENT_SOLID *END *INITIAL_VELOCITY_GENERATION *KEYWORD *MAT_ELASTIC *NODE *PART *SECTION_SOLID *TITLE
Reduced Input
Reduced Input
This example has been taken from the introductory class of John D. Reid. Example name: spinning-bar.k
*Node and *Element Cards are removed.
*KEYWORD
*TITLE
spinning bar
$
$ J.D. Reid 2/11/00 - original model obtained from Jim Day (LSTC)
$
$ Units: unknown
$
$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$
$
$$$$ Control Ouput
$
$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$
$
$...>....1....>....2....>....3....>....4....>....5....>....6....>....7....>....8
$
*CONTROL_TERMINATION
$ endtim endcyc dtmin endeng endmas
0.010
$
*CONTROL_TIMESTEP
$ dtinit scft isdo tslimt dt2ms lctm erode ms1st
0.70
$
*CONTROL_ACCURACY
$ osu inn
1 2
$
*CONTROL_ENERGY
$ hgen rwen slnten rylen
2 2 2
$
*CONTROL_OUTPUT
$ npopt neecho nrefup iaccop opifs ipnint ikedit
1 3
$
$
*DATABASE_BINARY_D3PLOT
$ dt lcdt
0.0002
$
$
*DATABASE_GLSTAT
$ dt
0.0001
$
*DATABASE_MATSUM
$ dt
0.0001
$
*DATABASE_NODOUT
$ dt
0.0001
$
*DATABASE_HISTORY_NODE
$ id1 id2 id3 id4 id5 id6 id7 id8
88 101
$
$ 88 - node at end of beam (ctr of end)
$ 101 - node at center of model
$
$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$
$
$$$$ Initial Conditions
$
$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$
$
$...>....1....>....2....>....3....>....4....>....5....>....6....>....7....>....8
$
*INITIAL_VELOCITY_GENERATION
$ sid styp omega vx vy vz
1 2 1000.
$ xc yc zc nx ny nz phase
0.0 0.0 0.0 0.0 0.0 1.0
$
$
$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$
$
$$$$ Define Parts and Materials
$
$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$
$
$...>....1....>....2....>....3....>....4....>....5....>....6....>....7....>....8
$
*PART
$ pid sid mid eosid hgid grav adpopt tmid
bar
1 1 1
$
*MAT_ELASTIC
$ mid ro e pr
1 3.00E-04 1.00E+07 0.30
$
*SECTION_SOLID
$ sid elform
1 2
$
$ - fully-integrated solid element formulation to eliminate hourglassing
$
$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$
$
$$$$ Define Nodes and Elements
$
$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$
$
$...>....1....>....2....>....3....>....4....>....5....>....6....>....7....>....8
$
*END
Figures
Figures
This example has been taken from the introductory class of John D. Reid. Example name: spinning-bar.k
Animated Result
Animated Result
This example has been taken from the introductory class of John D. Reid. Example name: spinning-bar.k
Download
Download
This example has been taken from the introductory class of John D. Reid. Example name: spinning-bar.k
