LS-DYNA KEYWORD USER'S MANUAL April 2003 Version 970 Copyright © 1992-2003 LIVERMORE SOFTWARE TECHNOLOGY CORPORATION All Rights Reserved Mailing Address: Livermore Software Technology Corporation 2876 Waverley Way Livermore, California 94551 Support Address: Livermore Software Technology Corporation 7374 Las Positas Road Livermore, California 94551 TEL: 925-449-2500 FAX: 925-449-2507 EMAIL: [email protected] Copyright © 1992-2003 by Livermore Software Technology Corporation All Rights Reserved TABLE OF CONTENTS TABLE OF CONTENTS INTRODUCTION ..................................................................................I.1 CHRONOLOGICAL HISTORY.................................................................................... I.1 DESCRIPTION OF KEYWORD INPUT .......................................................................I.16 MATERIAL MODELS............................................................................................... I.25 SPATIAL DISCRETIZATION..................................................................................... I.26 CONTACT-IMPACT INTERFACES............................................................................ I.29 INTERFACE DEFINITIONS FOR COMPONENT ANALYSIS ........................................I.30 CAPACITY.............................................................................................................. I.30 SENSE SWITCH CONTROLS.................................................................................... I.30 PRECISION .............................................................................................................I.31 EXECUTION SYNTAX .............................................................................................I.31 RESTART ANALYSIS ..............................................................................................I.35 VDA/IGES DATABASES........................................................................................... I.36 MESH GENERATION ...............................................................................................I.36 LS-PREPOST ..........................................................................................................I.37 EXECUTION SPEEDS ..............................................................................................I.39 UNITS ..................................................................................................................I.40 GENERAL CARD FORMAT...................................................................................... I.40 *AIRBAG........................................................................................... 1.1 *AIRBAG_OPTION1_{OPTION2}_{OPTION3}_<OPTIONAL NUMERIC ID> ...................1.1 *AIRBAG_INTERACTION........................................................................................ 1.42 *AIRBAG_REFERENCE_GEOMETRY_OPTION_OPTION ...........................................1.44 *ALE ................................................................................................ 2.1 *ALE_MULTI-MATERIAL_GROUP ............................................................................2.2 *ALE_REFERENCE_SYSTEM_CURVE ......................................................................2.6 *ALE_REFERENCE_SYSTEM_GROUP ......................................................................2.8 *ALE_REFERENCE_SYSTEM_NODE....................................................................... 2.12 *ALE_REFERENCE_SYSTEM_SWITCH ...................................................................2.14 *ALE_SMOOTHING ................................................................................................2.16 *ALE_TANK_TEST .................................................................................................2.17 *BOUNDARY...................................................................................... 3.1 *BOUNDARY_ACOUSTIC_COUPLING....................................................................... 3.2 LS-DYNA Version 970 iii TABLE OF CONTENTS *BOUNDARY_AMBIENT_EOS .................................................................................. 3.3 *BOUNDARY_CONVECTION_OPTION ...................................................................... 3.5 *BOUNDARY_CYCLIC............................................................................................. 3.7 *BOUNDARY_ELEMENT_METHOD_OPTION ............................................................ 3.9 *BOUNDARY_FLUX_OPTION ..................................................................................3.20 *BOUNDARY_MCOL ..............................................................................................3.23 *BOUNDARY_NON_REFLECTING ...........................................................................3.25 *BOUNDARY_NON_REFLECTING_2D .....................................................................3.26 *BOUNDARY_OUTFLOW_CFD_OPTION ..................................................................3.28 *BOUNDARY_PRESCRIBED_CFD_OPTION ..............................................................3.30 *BOUNDARY_PRESCRIBED_MOTION_{OPTION1}_(OPTION2} .................................3.32 *BOUNDARY_PRESSURE_CFD_SET .......................................................................3.37 *BOUNDARY_PRESSURE_OUTFLOW_OPTION ........................................................3.39 *BOUNDARY_RADIATION_OPTION ........................................................................3.40 *BOUNDARY_SLIDING_PLANE............................................................................... 3.44 *BOUNDARY_SPC_{OPTION1}_{OPTION2 }..............................................................3.45 *BOUNDARY_SPH_FLOW....................................................................................... 3.47 *BOUNDARY_SPH_SYMMETRY_PLANE................................................................. 3.49 *BOUNDARY_SYMMETRY_FAILURE .....................................................................3.50 *BOUNDARY_TEMPERATURE_OPTION ..................................................................3.51 *BOUNDARY_THERMAL_WELD .............................................................................3.52 *BOUNDARY_USA_SURFACE ................................................................................3.55 *COMPONENT ....................................................................................4.1 *COMPONENT_GEBOD_OPTION .............................................................................. 4.2 *COMPONENT_GEBOD_JOINT_OPTION ................................................................... 4.4 *COMPONENT_HYBRIDIII ....................................................................................... 4.8 *COMPONENT_HYBRIDIII_JOINT_OPTION ..............................................................4.10 *CONSTRAINED .................................................................................5.1 *CONSTRAINED_ADAPTIVITY ................................................................................ 5.2 *CONSTRAINED_EULER_IN_EULER ........................................................................ 5.3 *CONSTRAINED_EXTRA_NODES_OPTION ............................................................... 5.5 *CONSTRAINED_GENERALIZED_WELD_OPTION_{OPTION} .................................... 5.7 *CONSTRAINED_GLOBAL ......................................................................................5.20 *CONSTRAINED_INTERPOLATION_{OPTION }.........................................................5.22 *CONSTRAINED_JOINT_OPTION_{OPTION}_{OPTION}_{OPTION} ...........................5.27 iv LS-DYNA Version 970 TABLE OF CONTENTS *CONSTRAINED_JOINT_STIFFNESS_OPTION .........................................................5.38 *CONSTRAINED_LAGRANGE_IN_SOLID ................................................................5.50 *CONSTRAINED_LINEAR_GLOBAL ........................................................................5.56 *CONSTRAINED_LINEAR_LOCAL ..........................................................................5.59 *CONSTRAINED_NODAL_RIGID_BODY_{OPTION}_{OPTION} .................................5.61 *CONSTRAINED_NODE_SET_{OPTION }..................................................................5.68 *CONSTRAINED_POINTS .......................................................................................5.71 *CONSTRAINED_RIGID_BODIES ............................................................................5.73 *CONSTRAINED_RIGID_BODY_STOPPERS............................................................. 5.75 *CONSTRAINED_RIVET_{OPTION }.........................................................................5.78 *CONSTRAINED_SHELL_TO_SOLID .......................................................................5.80 *CONSTRAINED_SPOTWELD_{OPTION}_{OPTION} ................................................5.82 *CONSTRAINED_TIE-BREAK.................................................................................. 5.86 *CONSTRAINED_TIED_NODES_FAILURE ...............................................................5.87 *CONTACT ........................................................................................ 6.1 *CONTACT_OPTION1_{OPTION2}_{OPTION3}_{OPTION4 }.........................................6.2 *CONTACT_AUTO_MOVE ......................................................................................6.41 *CONTACT_COUPLING.......................................................................................... 6.42 *CONTACT_ENTITY..............................................................................................