A rotating shell element strikes and rebounds from a rigid wall surface. The plate is modeled with shell elements for viewing in LS-PrePost. This does not affect the calculation.

*RIGIDWALL_PLANAR Rotating Shell Strikes Rigid Wall LS-DYNA Manual Section: *RIGIDWALL_PLANAR Additional Sections: *INITIAL_VELOCITY_NODE Example: Rotating Shell Strikes Rigid Wall Filename: rigidwall_planar.shell.k Description: A rotating shell element strikes and rebounds from a rigid wall surface. The plate is modeled with shell elements for viewing in LS-PrePost. This does not affect the calculation. Model: The shell element has an elastic material model with Belytschko-Tsay shell formulation. The plate measures 10 * 10 * 2 mm3. The plate has an initial velocity of 100,000 mm/second in negative z-direction and an initial angular velocity of 100,000 radians/second about the y-axis. The rigid surface is modeled by an infinite smooth stonewall surface. Input: Nodes requiring initial velocity are specified with * INITIAL_VELOCITY_NODE. The location of the "Stonewall" is in the x-y plane with z=0 (*RIGIDWALL_PLANAR). The 4 nodes belonging to the shell element are slave nodes in the stonewall definition. The velocity components of the slave nodes in the normal direction to the stonewall are reset to zero at the moment of impact. Reference: Schweizerhof, K. and Weimar, K.

*CONTROL_ENERGY *CONTROL_TERMINATION *DATABASE_BINARY_D3PLOT *DATABASE_BINARY_D3THDT *DATABASE_GLSTAT *DATABASE_HISTORY_NODE *DATABASE_NODOUT *DATABASE_RWFORC *ELEMENT_SHELL *END *INITIAL_VELOCITY_NODE *KEYWORD *MAT_ELASTIC *NODE *PART *RIGIDWALL_PLANAR *SECTION_SHELL *SET_NODE_LIST *TITLE

*KEYWORD *TITLE STONEWALL SURFACE $ $ LSTC Example $ $ Last Modified: September 23, 1997 $ $ Units: ton, mm, s, N, MPa, N-mm $ $$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$ $ $$$$ Control Ouput $ $$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$ $ $...>....1....>....2....>....3....>....4....>....5....>....6....>....7....>....8 $ *CONTROL_TERMINATION $ endtim endcyc dtmin endneg endmas 2.000E-04 $ *CONTROL_ENERGY $ hgen rwen slnten rylen 2 2 $ $ *DATABASE_BINARY_D3PLOT $ dt lcdt 1.000E-05 $ *DATABASE_BINARY_D3THDT $ dt lcdt 2.000E-03 $ *DATABASE_GLSTAT $ dt 4.0e-06 $ *DATABASE_NODOUT $ dt 4.0e-06 $ *DATABASE_HISTORY_NODE $ i i i i i i i i $ id1 id2 id3 id4 id5 id6 id7 id8 12 13 101 $ *DATABASE_RWFORC $ dt 4.0e-06 $ $$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$ $ $$$$ Rigidwalls $ $$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$ $ $...>....1....>....2....>....3....>....4....>....5....>....6....>....7....>....8 $ $$$$ The nodes in set 1 (nodes of the moving shell) are prevented from $$$$ penetrating the rigidwall. $ *RIGIDWALL_PLANAR $ nsid nsidex boxid 1 $ $ xt yt zt xh yh zh fric 20.000 20.000 0.000 20.00000 20.00000 100.000 $ $ *SET_NODE_LIST $ sid 1 $ nid1 nid2 nid3 nid4 nid5 nid6 nid7 nid8 101 102 103 104 $ $$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$ $ $$$$ Initial Conditions $ $$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$ $ $...>....1....>....2....>....3....>....4....>....5....>....6....>....7....>....8 $ $$$$ Nodes of the moving shell are given an initial tran and rot velocity. $ *INITIAL_VELOCITY_NODE $ nid vx vy vz vxe vye vze 101 0.000E+00 0.000E+00-1.000E+05 0.000E+00 1.000E+05 0.000E+00 102 0.000E+00 0.000E+00-1.000E+05 0.000E+00 1.000E+05 0.000E+00 103 0.000E+00 0.000E+00-1.000E+05 0.000E+00 1.000E+05 0.000E+00 104 0.000E+00 0.000E+00-1.000E+05 0.000E+00 1.000E+05 0.000E+00 $ $$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$ $ $$$$ Define Parts and Materials $ $$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$ $ $...>....1....>....2....>....3....>....4....>....5....>....6....>....7....>....8 $ *PART $ pid sid mid eosid hgid adpopt wall 1 1 1 moving-shell 2 2 2 $ $ *MAT_ELASTIC $ mid ro e pr da db k 1 1.000E-08 1.000E+05 3.000E-01 $ *MAT_ELASTIC $ mid ro e pr da db k 2 1.000E-08 1.000E+05 3.000E-01 $ $ *SECTION_SHELL $ sid elform shrf nip propt qr/irid icomp 1 2 0.83333 2.000E+00 3.000E+00 0.000E+00 $ t1 t2 t3 t4 nloc 1.000E+00 1.000E+00 1.000E+00 1.000E+00 0.000E+00 $ *SECTION_SHELL $ sid elform shrf nip propt qr/irid icomp 2 2 0.83333 2.000E+00 3.000E+00 0.000E+00 $ t1 t2 t3 t4 nloc 2.000E+00 2.000E+00 2.000E+00 2.000E+00 0.000E+00 $ $$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$ $ $$$$ Define Nodes and Elements $ $$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$ $ $...>....1....>....2....>....3....>....4....>....5....>....6....>....7....>....8 $ $ *END