ISO 10303-104:2000

INTERNATIONAL ISO
STANDARD 10303-104
First edition
2000-12-15
Industrial automation systems and
integration — Product data representation
and exchange —
Part 104:
Integrated application resource: Finite
element analysis
Systèmes d'automatisation industrielle et intégration — Représentation
et échange de données de produits —
Partie 104: Ressources d'application intégrées: Analyse par éléments
finis
Reference number
©
ISO 2000
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ii © ISO 2000 – All rights reserved

Contents Page
1 Scope . . . . . 1
1.1 Analysistypescope. . . . 1
1.2 Structural response definition schema scope . . . 1
1.3 Structural response representation schema scope . . . . 2
1.4 Finiteelementanalysiscontrolandresultschemascope. . 3
1.5 Scalars,vectors,andtensorsschemascope . . . 3
2 Normativereferences . . . . 4
3 Terms,definitions,abbreviations,andsymbols . . . 5
3.1 Terms defined in ISO 10303-1 . . . . 5
3.2 Othertermsanddefinitions. . . . 5
3.3 Symbols. . . . . . 7
3.4 Abbreviations. . . . 7
4 Structural response definition schema . . . . 8
4.1 Introduction. . . . 8
4.2 Fundamental concepts and assumptions . . . 8
4.3 Structural response definition schema entity definitions . . 8
4.3.1 structural_response_property . . . 8
4.3.2 fea_model_definition . . . . . . 10
4.3.3 node_definition. . . . 10
4.3.4 element_definition . . . . 10
5 Structural response representation schema . . . 12
5.1 Introduction. . . . 14
5.2 Fundamental concepts and assumptions . . . 14
5.2.1 Product relationship . . . . . . 14
5.2.2 Finiteelementanalysismodelrelationships . . . 14
5.2.3 Geometric founding and analysis space . . . 15
5.2.4 Identifiers. . . . 15
5.2.5 Coordinatesystems. . . . 15
5.2.6 Elementmatrixintegration. . . 15
5.2.7 Unitsandmeasures. . . . 15
5.2.8 Interfacewiththematerialsschema . . . 15
5.2.9 Finiteelementanalysismodel,control,andresultrelationships. . 16
5.2.10 Useofelement . . . . 16
5.3 Structural response representation schema type definitions . . 16
5.3.1 axi_or_plane . . . . 16
5.3.2 coordinate_system_type . . . . 17
5.3.3 element_order . . . . 19
5.3.4 plane_2d_element_purpose . . . 19
5.3.5 enumerated_plane_2d_element_purpose . . . . . 19
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5.3.6 application_defined_element_purpose. . . 20
5.3.7 volume_element_purpose . . . 20
5.3.8 enumerated_volume_element_purpose . . . 21
5.3.9 surface_element_purpose . . . 21
5.3.10 enumerated_surface_element_purpose. . . 21
5.3.11 curve_element_purpose . . . . 22
5.3.12 enumerated_curve_element_purpose . . . 23
5.3.13 volume_3d_element_shape . . . 24
5.3.14 element_2d_shape . . . . 24
5.3.15 matrix_property_type . . . . . 25
5.3.16 enumerated_matrix_property_type. . . 25
5.3.17 application_defined_matrix_property_type . . . . 25
5.3.18 surface_matrix_property_type . . . 26
5.3.19 enumerated_surface_matrix_property_type . . . . 26
5.3.20 curve_matrix_property_type . . . 27
5.3.21 enumerated_curve_matrix_property_type . . . . . 28
5.3.22 matrix_symmetry. . . . 29
5.3.23 degree_of_freedom. . . . 30
5.3.24 enumerated_degree_of_freedom . . . 30
5.3.25 application_defined_degree_of_freedom . . . . . 31
5.3.26 curve_element_freedom . . . . 31
5.3.27 enumerated_curve_element_freedom . . . 32
5.3.28 integration_rule. . . . 32
5.3.29 shape_function . . . . 33
5.3.30 volume_2d_element_representation . . . 33
5.3.31 surface_2d_element_representation . . . 34
5.3.32 curve_2d_element_representation . . . 34
5.3.33 volume_2d_element_descriptor . . . 34
5.3.34 surface_2d_element_descriptor . . . 35
5.3.35 curve_2d_element_descriptor . . . 35
5.3.36 volume_3d_element_coordinate_system. . . 35
5.3.37 volume_2d_element_coordinate_system. . . 36
5.3.38 surface_3d_element_coordinate_system. . . 36
5.3.39 surface_2d_element_coordinate_system. . . 36
5.3.40 curve_3d_element_coordinate_system. . . 37
5.3.41 curve_element_end_coordinate_system . . . 37
5.3.42 directionally_explicit_element_coordinate_system . . 37
5.3.43 element_aspect . . . . 38
5.3.44 element_volume . . . . 38
5.3.45 curve_edge . . . . 39
5.3.46 node_or_node_group . . . . . . 39
5.3.47 element_or_element_group . . . 39
5.4 Structural response representation schema entity definitions: Finite element analysis
model . . . . . 40
5.4.1 fea_model . . . . 40
5.4.2 fea_model_3d . . . . 41
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5.4.3 fea_model_2d . . . . 41
5.4.4 structural_response_property_definition_representation . . 42
5.4.5 fea_representation_item . . . . 43
5.5 Structural response representation schema entity definitions: Node and element geom-
etry,geometriccoordinatesystems,andgeometricassociativity. . 44
5.5.1 direction_node . . . . 45
5.5.2 fea_axis2_placement_2d . . . . 47
5.5.3 fea_axis2_placement_3d . . . . 48
5.5.4 node_set . . . . 49
5.5.5 analysis_item_within_representation . . . 49
5.5.6 node_geometric_relationship . . . 50
5.5.7 element_geometric_relationship . . . 51
5.6 Structural response representation schema entity definitions: Node representation . . . 52
5.6.1 node_representation . . . . . . 52
5.6.2 node . . . . 53
5.6.3 node_with_vector . . . . 53
5.6.4 node_with_solution_coordinate_system . . . 54
5.6.5 dummy_node. . . . 55
5.6.6 geometric_node . . . . 55
5.6.7 substructure_node_relationship . . . 56
5.7 Structural response representation schema entity definitions: Element representations . 56
5.7.1 element_representation. . . . . 61
5.7.2 volume_3d_element_representation . . . 62
5.7.3 axisymmetric_volume_2d_element_representation . . 64
5.7.4 plane_volume_2d_element_representation . . . . 66
5.7.5 surface_3d_element_representation . . . 68
5.7.6 axisymmetric_surface_2d_element_representation . . 70
5.7.7 plane_surface_2d_element_representation . . . . . 72
5.7.8 curve_3d_element_representation . . . 75
5.7.9 axisymmetric_curve_2d_element_representation . . 77
5.7.10 plane_curve_2d_element_representation . . . . . 79
5.7.11 element_descriptor . . . . 80
5.7.12 volume_3d_element_descriptor . . . 81
5.7.13 axisymmetric_volume_2d_element_descriptor . . 82
5.7.14 plane_volume_2d_element_descriptor. . . 82
5.7.15 volume_3d_element_basis . . . 83
5.7.16 volume_2d_element_basis . . . 84
5.7.17 surface_3d_element_descriptor . . . 84
5.7.18 axisymmetric_surface_2d_element_descriptor . . 85
5.7.19 plane_surface_2d_element_descriptor. . . 85
5.7.20 surface_3d_element_basis . . . 86
5.7.21 surface_2d_element_basis . . . 87
5.7.22 curve_3d_element_descriptor . . . 87
5.7.23 axisymmetric_curve_2d_element_descriptor . . . 88
5.7.24 plane_curve_2d_element_descriptor. . . 88
5.7.25 curve_3d_element_basis . . . . 89
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5.7.26 curve_2d_element_basis . . . . 90
5.7.27 point_element_representation . . . 90
5.7.28 point_element_matrix . . . . . 91
5.7.29 stationary_mass . . . . 92
5.7.30 grounded_spring . . . . 93
5.7.31 grounded_damper . . . . 93
5.7.32 directionally_explicit_element_representation. . . 94
5.7.33 system_and_freedom. . . . 96
5.7.34 directionally_explicit_element_coefficient . . . 96
5.7.35 explicit_element_representation . . . 97
5.7.36 explicit_element_matrix . . . . 98
5.7.37 substructure_element_representation . . . 99
5.8 Structural response representation schema definitions: Element topologies. 99
5.9 Structural response representation schema entity definitions: Element coordinate systems115
5.9.1 aligned_axis_tolerance. . . . . 116
5.9.2 arbitrary_volume_3d_element_coordinate_system . . 117
5.9.3 parametric_volume_3d_element_coordinate_system . . 117
5.9.4 arbitrary_volume_2d_element_coordinate_system . . 119
5.9.5 parametric_volume_2d_element_coordinate_system . . 121
5.9.6 aligned_surface_3d_element_coordinate_system . . 122
5.9.7 parametric_surface_3d_element_coordinate_system . . 124
5.9.8 constant_surface_3d_element_coordinate_system. . 126
5.9.9 aligned_surface_2d_element_coordinate_system . . 127
5.9.10 parametric_surface_2d_element_coordinate_system . . 128
5.9.11 aligned_curve_3d_element_coordinate_system . . 129
5.9.12 parametric_curve_3d_element_coordinate_system . . 130
5.9.13 parametric_curve_3d_element_coordinate_direction . . 132
5.9.14 curve_2d_element_coordinate_system. . . 132
5.9.15 directionally_explicit_element_coordinate_system_arbitrary . . 133
5.9.16 directionally_explicit_element_coordinate_system_aligned. . 134
5.9.17 euler_angles . . . . 134
5.10 Structural response representation schema entity definitions: Element matrix integration 135
5.10.1 Volume3DElement . . . . 139
5.10.2 Volume2DElement . . . . 139
5.10.3 Curve2DElement . . . . 140
5.10.4 Surface3DorCurveElement . . . 140
5.10.5 Surface2DElement . . . . 141
5.10.6 volume_3d_element_integrated_matrix . . . 142
5.10.7 volume_3d_element_integrated_matrix_with_definition . . 142
5.10.8 volume_3d_element_field_integration. . . 143
5.10.9 element_integration_algebraic . . . 143
5.10.10 volume_3d_element_field_integration_rule . . . . 143
5.10.11 volume_3d_element_field_integration_explicit . . 144
5.10.12 volume_position_weight . . . . 144
5.10.13 volume_2d_element_integrated_matrix . . . 145
5.10.14 volume_2d_element_integrated_matrix_with_definition . . 145
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5.10.15 volume_2d_element_field_integration. . . 146
5.10.16 volume_2d_element_field_integration_rule . . .
...