# Reduced Input

*Node and *Element Cards are removed.

*KEYWORD *TITLE hinged shell w/ stop angle $ $ LSTC Example $ $ Last Modified: October 16, 1997 $ $ - This problem has a pair of concentrated loads applied to $ the end nodes of a hinge-jointed shell system. $ $ - 30 degree stop angle (must add joint stiffness, local coord system) $ $ - control timestep with maximum 4.15E-06 $ $ Units: lbf-s2/in, in, s, lbf, psi, lbf-in $ $$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$ $ $$$$ Control Ouput $ $$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$ $ $...>....1....>....2....>....3....>....4....>....5....>....6....>....7....>....8 $ *CONTROL_TERMINATION $ endtim endcyc dtmin endeng endmas 2.000E-02 $ *CONTROL_TIMESTEP $ dtinit scft isdo tslimt dtms lctm erode ms1st 5 $ *DEFINE_CURVE $ lcid sidr scla sclo offa offo 5 $ abscissa ordinate 0.0 4.15E-06 1.0 4.15E-06 $ $ *DATABASE_BINARY_D3PLOT $ dt lcdt 5.000E-04 $ *DATABASE_GLSTAT $ dt 0.0001 $ *DATABASE_JNTFORC $ dt 1.000E-04 $ *DATABASE_NODOUT $ dt 0.0001 $ *DATABASE_HISTORY_NODE $ nid1 nid2 3 4 $ *DATABASE_RBDOUT $ dt 0.0001 $ $$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$ $ $$$$ Revolute Joint $ $$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$ $ $...>....1....>....2....>....3....>....4....>....5....>....6....>....7....>....8 $ *CONSTRAINED_JOINT_REVOLUTE $ $ Create a revolute joint between two rigid bodies. The rigid bodies must $ share a common edge to define the joint along. This edge, however, must $ not have the nodes merged together. Rigid bodies A and B will rotate $ relative to each other along the axis defined by the common edge. $ $ Nodes 1 and 2 are on rigid body A and coincide with nodes 9 and 10 $ on rigid body B, respectively. (This defines the axis of rotation.) $ $ The relative penalty stiffness on the revolute joint is to be 1.0, $ the joint is well lubricated, thus no damping at the joint is supplied. $ $...>....1....>....2....>....3....>....4....>....5....>....6....>....7....>....8 $ n1 n2 n3 n4 n5 n6 rps damp 1 9 2 10 1.0 $ $ $ $$$$$$$$$$$$ Define a joint stiffness for the revolute joint described above. $ $ Attributes of the joint stiffness: $ - Used for defining a stop angle of 30 degrees rotation $ (i.e., the joint allows a positive rotation of 30 degrees and $ then imparts an elastic stiffness to prevent futher rotation) $ - Define between rigid body A (part 1) and rigid body B (part 2) $ - Define a local coordinate system along the revolute axis $ on rigid body A - nodes 1, 2 and 3 (cid = 5). This is used to $ define the revolute angles phi (PH), theta (T), and psi (PS). $ - The elastic stiffness per unit radian for the stop angles $ are 100, 10, 10 for PH, T, and PS, respectively. $ - Values not specified are not used during the simulation. $ $...>....1....>....2....>....3....>....4....>....5....>....6....>....7....>....8 $ *CONSTRAINED_JOINT_STIFFNESS_GENERALIZED $ jsid pidA pidB cidA cidB 1 1 2 5 5 $ $ lcidPH lcidT lcidPS dlcidPH dlcidT dlcidPS $ $ esPH fmPS esT fmT esPS fmPS 100.0 10.0 10.0 $ $ nsaPH psaPH nsaT psaT nsaPS psaPS 30.0 $ $ *DEFINE_COORDINATE_NODES $ cid n1 n2 n3 5 1 2 3 $ $$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$ $ $$$$ Define Loading $ $$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$ $ $...>....1....>....2....>....3....>....4....>....5....>....6....>....7....>....8 $ *LOAD_NODE_POINT $ nid dof lcid sf cid m1 m2 m3 3 3 1-1.000E+00 4 3 1-1.000E+00 $ *DEFINE_CURVE $ lcid sidr scla sclo offa offo 1 $ abscissa ordinate 0.00000000E+00 1.00000000E+00 1.00000000E+00 1.00000000E+00 $ $$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$ $ $$$$ Define Parts and Materials $ $$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$ $ $...>....1....>....2....>....3....>....4....>....5....>....6....>....7....>....8 $ *PART $ pid sid mid eosid hgid grav adpopt rotating 1 1 1 0 fixed 2 1 2 0 $ $ $$$$ Materials $ *MAT_RIGID $ $ mid ro e pr n couple m alias 1 7.000E-04 3.000E+07 3.000E-01 $ $ cmo con1 con2 $ $ lco/a1 a2 a3 v1 v2 v3 $ $ *MAT_RIGID $ $ mid ro e pr n couple m alias 2 7.000E-04 3.000E+07 3.000E-01 $ $ cmo con1 con2 1.0 7 7 $ $ lco/a1 a2 a3 v1 v2 v3 $ $ $$$$ Sections $ *SECTION_SHELL $ sid elform shrf nip propt qr/irid icomp 1 2 3.0 $ t1 t2 t3 t4 nloc 0.1 0.1 0.1 0.1 $ $$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$ $ $$$$ Define Nodes and Elements $ $$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$ $ $...>....1....>....2....>....3....>....4....>....5....>....6....>....7....>....8 *END