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FEA description

FEA description

Product catalog summary

Overview
The document is a detailed guide on an advanced nonlinear and detail analysis program for civil and building structures, focusing on finite element analysis (FEA). It covers geometry modeling, mesh generation, analysis, and post-processing.

Geometry Modeling
This section explains advanced modeling functions for both top-down and bottom-up approaches in surface and solid modeling. Techniques include line, arc, circle, polygon, and B-Spline for curves; plane patch, Coons patch, and NURBS patch for surfaces; and box, wedge, cylinder, and sphere for solids. Advanced operations like extrude, revolve, loft, and sweep are also discussed.

Mesh Generation
The document describes methods for mesh generation, including automatic surface and solid meshing, mapped mesh generation, and hybrid meshing. It highlights meshing algorithms like Loop Mesher, Grid Mesher, and Delaunay Mesher, and discusses H-Morph and Sub-mapped Meshing techniques.

Analysis
This section outlines various analyses such as static analysis, construction stage analysis, moving load analysis, and modal analysis. It covers element libraries, load and boundary conditions, and arbitrary loading functions, explaining linear static analysis, eigenvalue analysis, and dynamic analysis, including transient response analysis.

Post-processing
Post-processing involves interpreting analysis results, visualizing data, and generating reports.

Data Exchange
The document discusses CAD data exchange standards like STEP and IGES, detailing import and export capabilities for geometry and analysis model data.

Conclusion
The program provides an integrated solution for advanced analysis in civil structural CAE, capable of handling complex simulations involving material and geometric nonlinearity, contact, heat transfer, fatigue, and more.

Nonlinear Analysis
This section covers nonlinear analysis methods, including boundary nonlinear analysis with elements like dampers and viscous boundaries. It discusses frequency response analysis methods such as direct and modal frequency response, and spectrum response analysis using SRSS, CQC, and ABS methods.

Material Nonlinearity Analysis
Material models such as von Mises, Tresca, and Mohr-Coulomb are discussed. Nonlinear behaviors like hardening and softening are analyzed using iteration methods like Full Newton-Raphson and Arc-Length Method.

User-Supplied Materials
Users can define their own material models via a Fortran-coded library, supporting nonlinear elastic and elasto-plastic behaviors.

Geometry Nonlinearity Analysis
Methods such as Updated Lagrangian and Total Lagrangian are used, with iteration methods similar to material nonlinearity analysis.

Interface Nonlinearity Analysis
This includes models like Coulomb Friction and Bond-Slip, focusing on deformation between steel and concrete interfaces.

Reinforcement Analysis
Discusses embedded reinforcements and their stress analysis in concrete girders.

Cracking Analysis
Covers cracking models and results, including crack patterns and element status.

Heat of Hydration Analysis
Analyzes visco-elastic models and heat transfer methods, including steady-state and transient conduction.

Fatigue Analysis
Methods like S-N and E-N are used to calculate cycles to failure and safety factors.

Quality Assurance & Control
Describes system tests, verification of element formulation, and regression tests to ensure quality.

Post-processing
Provides comprehensive support for visualization and interpretation, including contour plots, deformed shapes, and result extraction. Features include flexible user control, multiple plots, and state-of-the-art report generation.

Catalog excerpts

Advanced Nonlinear and Detail Analysis Program

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Overview Overview 02 Geometry Modeling 15 Mesh Generation 23 Analysis 40 Post-processing 64 2

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Overview About FEA Advanced Nonlinear and Detail Analysis Program “FEA is a state-of-the art integrated finite element analysis system for nonlinear and detail simulations of civil and building structures… 2001 2003 2005 ” 2006 3

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Overview Foundation Advanced Nonlinear and Detail Analysis Program Modeling, Meshing & Post-processing MIDAS Solver Linear, Nonlinear (Material/Geometry) Contact, Heat Transfer, Fatigue “Integrated Solution for Advanced Analysis in Civil Structural CAE” Co-Dev. with TNO DIANA Crack, Reinforcement, Interface 4

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Overview Analysis Overview Advanced Nonlinear and Detail Analysis Program Static Analysis Construction Stage Analysis Moving Load Analysis Modal Analysis Linear Buckling Analysis Transient / Frequency / Response Spectrum Analysis Material / Geometry Nonlinearity Analysis Interface Nonlinearity Analysis Reinforcement Analysis Cracking Analysis Static/Explicit Contact Analysis Heat Transfer Analysis Fatigue Analysis Fluid Dynamics Analysis 5

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Overview Applicable Problems Advanced Nonlinear and Detail Analysis Program General Detail Analysis (Linear, Material/Geometry Nonlinear) • General detail FE analysis (linear static/dynamic analysis of concrete and steel) • Buckling analysis of steel structure with material and geometric nonlinearity Concrete, Interface and Reinforcement Nonlinear Analysis • Detail analysis of composite structure (steel + concrete) Thermal analysis and differential shrinkage analysis of steel-concrete composite girder, concrete filled steel tube and core of the SRC pier and so on • 3D detail analysis considering...

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Overview Applicable Problems Advanced Nonlinear and Detail Analysis Program Thermo-Elastic Analysis (Heat Transfer, Heat of Hydration) • Analysis of heat of hydration (general, special, nonlinear) • Detail analysis for assessment of shear capacity of pavement (de-bonding failure) • Analysis of thermal effect due to the asphalt pavement (guss asphalt) • Fire effect on a reinforced concrete slab • Evaluation of residual stress and integrity of welded part Special Analysis (CFD, Contact, Fatigue, etc.) • Crack and fatigue analysis of the surface of structures • Damage estimation of pier/waterbreak...

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Overview Advanced Nonlinear and Detail Analysis Program Configuration Geometry Modeler Mesh Generator FEM Pre-processor Report Generator FEA Post-processor FEM Solver 8

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fte Eckt Secretly (jesti Anarras Post yjew Wridow Hat) Curve | >•• • SaU ; Geometry | M . ! v.-. j ftrygudeMesh Mesh j Aruiras |Post Oau | Post Style Q D:WMy [locumenleWMy F>J> Works.mH Start Page My FXP Works jnlb TasV pane provides ft equently used corrman* Open Project Preference & setting Import STEP Prmtjve dfrriet eccJe-sn Fuse Local Prem Proper ty/Material Auto-Mesh Edge Auto-Mesh Planar Area Auto-Mesh Face rocessoi for Finde Element A/ialysis) Developed based-on Task-oriented Design Paradigm

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Overview Advanced Nonlinear and Detail Analysis Program Graphic Display - Geometry Shading with Edge Transparenc y Wireframe Shading + Transparency 10

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Overview Advanced Nonlinear and Detail Analysis Program Graphic Display - Mesh Shrink FeatureEdge Wireframe (Free-Face) Shading FeatureEdge 11

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Overview Transformation Control Box Virtual Mesh Transformation Advanced Nonlinear and Detail Analysis Program Virtual Transformation (Translation, Rotation, Scaling) by Mouse Dragging 12

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Overview Flying View Advanced Nonlinear and Detail Analysis Program 13

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Overview Data Exchange Advanced Nonlinear and Detail Analysis Program Geometry Model Data • • • • • Import (Geometry) STEP, IGES ACIS*, Parasolid* SolidWorks*, Inventor*, etc. AutoCAD DWG / DXF → ‘*’ marked CAD interfaces are options. Imported CAD Geometry Export (Geometry) STEP, IGES Analysis Model Data • • • • Import (Analysis Data) DIANA, MSC/NASTRAN Neutral (Text) Export (Analysis Data) MIDAS/Civil, MIDAS/Gen Neutral (Text) Standards for CAD Data Exchange • • STEP (STandard for the Exchange of Product Model Data) IGES (Initial Graphics Exchange Specification) Generated Mesh 14

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Geometry Modeling Overview 02 Geometry Modeling 15 Mesh Generation 23 Analysis 40 Post-processing 64 15

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Geometry Modeling Curve Line, Polyline • Arc, Circle • Polygon • B-Spline • Tunnel Section • Fillet, Chamfer • Trim, Extend • Intersect • Offset, Tangent • Break, Merge … • Advanced Nonlinear and Detail Analysis Program Geometry Modeling Surface Plane Patch • Coons Patch • NURBS Patch • Grid Patch • Vertex Patch • Fillet, Chamfer • Sew, Fuse • Trim, Divide • Extend • Imprint … • Advanced Modeling Solid Box, Wedge • Cylinder, Cone • Sphere, Torus • Trim, Divide • Embed • Boolean Op. (Fuse, Cut, …) • Stitch Surfaces … • Extrude • Revolve • Loft • Sweep • Fillet, Chamfer • Offset, Draft • Shelling...

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Geometry Modeling Advanced Nonlinear and Detail Analysis Program Curve Modeling Generation Line • Arc • Circle • Ellipse • Parabola • Hyperbola • Modification B-Spline • Polyline • Rectangle • Polygon • Profile • Tunnel • On-Surface Curve • Shortest Path Line • Surface Intersection • Offset Curve • Extrude Vertex • Tangent Line • Arc Fillet / Chamfer • Trim / Extend • Merge / Break • Intersect • Align, Coincide • Make Wire • Imported DXF Polyline Surface Intersection Line Circle Profile (Polyline+Tangent Arc) Tunnel Section B-Spline 17

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Geometry Modeling Advanced Nonlinear and Detail Analysis Program Surface Modeling Vertex Cloud Co-planar Curves Virtual Grid (M X N) Plane Patch Elevation Grid Patch Vertex Patch 2~4 Curves Arbitrary Curves (Boundary/Tangent/Internal) Coons Patch NURBS Patch 18

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