0 - Introduction To Diana.pdf

DIANA Finite Element Analysis

Civil Engineering Geotechnical Engineering Petroleum Engineering

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NOW

Advancing in new numerical analysis techniques

About DIANA • DIANA is as acronym for DIsplacement method ANAlysis • DIANA is a general purpose Finite Element program with a wide range of specific features for applications in: • Civil Engineering • Geotechnical Engineering • Petroleum Engineering • Our Mission is to enable our clients to solve the most complex engineering problems and in doing so becoming experts in their engineering field.

User Network and Global Support • Scientific Expert Network • DIANA FEA Library and Expert Forum • Global Support Network

DIANA Program Structure Model-Definition

iDIANA-Pre/ FEMGEN

FE-Analysis

DIANA_W Analysis-Control

.dat

Mesh-Editor

FX+ for DIANA/Pre

.fxd

Post-Processing

.ff

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iDIANA-Post VIEW

.dpb

FX+ for DIANA/Post

.dcf

Analysis Modules

Linear Nonlinear Heat Transfer Design …

.V72

.tb

Work Flow

Geometry Modeling Mesh Generation Load & B.C.’s Post-processing

Post-Neutral File

Performing Analysis Output to FX4D

DIANA FX4D FILOS File

Pre-Neutral File

MeshEditor Check & Final Editing Analysis Options

FX4D – Task oriented pre/post processor Main Menu Tabbed Toolbar

Works Tree

Property Window Table Window Output Window

FX4D – Advantages •

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Graphical tools • Intuitive graphical user interface • Various display options • Advanced selection methods • CAD-like modeling functions • Efficient and robust geometry checking & repairing tools Meshing tools • Various easy & strong meshing algorithms for 1st- and 2nd-order elements • Embedded reinforcements generation • Automatic DIANA element type selection Loads and boundary conditions • Full support of load and boundary conditions • Both applicable on mesh and geometry entities • Function based definition • MS-Excel compatible tables Post-processing • Complete solution to result interpretation

MeshEditor - Framework Toolbar

Works-Tree with full access to model’s components

Working window Right click context menu

Right click context menu

Group list selection window

MeshEditor - Analysis Editing tools

Load Combination

Advanced Material properties

Reinforcement properties Sectional properties

Diana_w and command files

Diana_w and command files

Diana_w and command files

Diana_w and command files

*FILOS INITIA *INPUT READ FILE "C:/Documents and Settings/bej/test.dat" *END *LINSTA OUTPUT FILE "test" *END

iDIANA – Integrated pre/post processor

Working Window Works-Tree with full access to model’s components

Model Navigator

Interactive dialogue boxes Command line

DIANA Test Selection - DTest

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DIANA Test Selection - DTest

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DIANA Test Selection - DTest

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DIANA Test Selection - DTest

DIANA Online Documentation

Analysis Types

Analysis types • • • • • • •

Linear Static Nonlinear Static (Physical, Geometrical, Transient) Dynamic (Linear and Nonlinear) Stability (Buckling and post buckling) Potential flow Coupled flow-stress Phased

Analysis types Linear Static Analysis • Moving Loads Analysis (Influence lines and fields for critical results)

• Fatigue Failure Analysis

• 2D and 3D Linear Elastic Fracture Mechanics

Analysis types Nonlinear Analysis • Material Nonlinear Analysis • Geometrical Nonlinear Analysis (Total and Updated Lagrange methods)

• Transient Nonlinear Analysis • Contact Analysis

Analysis types Dynamic Analysis •

Frequency response analysis • • •

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Transient analysis • •

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Direct frequency response analysis Modal response analysis Spectral frequency response analysis

Linear transient analysis Nonlinear transient

Hybrid Frequency-Time Domain Analysis Fluid-Structure interaction analysis

Stability Analysis • • •

Euler Stability Analysis Perturbation Analysis Continuation Analysis

Analysis types Potential Flow Analysis • • • • • •

Heat Flow Analysis Groundwater Flow Analysis Heat transfer by conduction, convection and radiation Temperature and time dependency of material properties Contamination transport of a pollutant within a soil Reynolds Flow–Lubrication Analysis

Analysis types Coupled Flow-Stress Analysis •

Simultaneous Solution with Pore Pressure

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Staggered Solution with Pore Pressure

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Staggered Solution with Temperature

Phased Analysis •

Phased Structural Analysis

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Phased Potential Flow Analysis

Analysis types Specific Analysis Types • • • • • •

Lattice Analysis Pipeline Analysis Parameter Estimation Probabilistic Analysis Liquefaction Analysis …

Element Library

General Element Library • • • • • • • • •

Trusses Beams Plane Stress Plane Strain Axisymmetric Plate Bending Flat Shells Curved Shells Solids

• Interface • Spring • Point mass

DIANA Special Element Library • Embedded Reinforcement • Pile / Pile tip element

Material Models

Material Models • • • • • • • •

Linear, nonlinear, modified elasticity, hyperelasticity Isotropic and Orthotropic plasticity Viscoelasticity and Viscoplasticity Discrete and smeared crack models Creep and Shrinkage models* Time/temperature/maturity dependent Liquefaction * User Supplied models

* DIANA also offers simplified engineering models

Material Models Crack models • •

Discrete Cracking Smeared Cracking • •

Multiple Fixed Crack Model Total Strain Crack Models •

Fixed and rotating crack models

General behavior • Tension softening (linear, multi-linear, nonlinear, etc) • Constant and linear tension cut-off • Shear retention constant or diagram

Material Models Creep • • •

Metal Creep (Temperature creep) Transient Creep (Salt formation) Viscoelasticity (Concrete)

Shrinkage •

Discrete Function for shrinkage strains (Depending on the element age or on the maturity)

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Concrete Shrinkage Models • CEB-FIP Model Code, EC2, ACI 209, NEN 6720

Special Material Models Spring/Dashpot Elements •

Linear Elastic Springs

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Nonlinear Elastic Springs • Loading - Unloading - Reloading

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Plastic Springs

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Soil Springs

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Continuous damping

Special Material Models Interface Behavior •

Linear/Nonlinear Elastic

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Cracking (Discrete/Dilatancy)

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Bond-slip

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Coulomb friction

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Combined Cracking-Shearing-Crushing

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User Supplied Subroutine

Special Material Models

Reinforcement Behavior •

Linear Elasticity

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Plasticity

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Tendon modeling (Bondless, Grouted)

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User Supplied Subroutine

Special Material Models

Soil Behavior •

Stress Initialization • •

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Initial fields K0 procedures

Pore pressure modeling •

Drained/Undrained Behavior

Soil Material Models Material Model

Behaviour

Transversely Isotropic

Anisotropic Elastic

Jointed Rock

Anisotropic Elasto-plastic

Hoek-Brown

Elasto-plastic

Modified cam-clay

Elasto-plastic

Mohr-Coulomb Drucker-Prager

Elasto-plastic with hardening and softening and Ambient influences

Modified Mohr-Coulomb

Elasto-plastic with cap-hardening

Duncan-Chang

Hyberbolic, Nonlinear elastic

London clay

Nonlinear elasto-plastic

Ramberg-Osgood Hardin-Drnevich

Models for energy dissipation and cyclic loading

Towhata-Iai, Nishi, Bowl, and Added Viscosity

Liquefaction

User-supplied material

User-coded subroutine

Reference Type

Rocks

Clay

Sand & Clay

OC Clays Various Soils Soil Liquefaction -

Material Models User-supplied Models • • • • • • •

General User-supplied Material Model Elasticity and Viscoelasticity Nonlinear Elasticity Plasticity and Cracking Ambient influences Interface Liquefaction

Loads & Boundary Conditions

Load and Boundary Constraints • Supported Functions • • • • • • • • • • • • • • • • • • •

• Arbitrary Point Load Body Force • Constraints Nodal Head • Fixed/Prescribed Nodal / Surface Flux • Released constraint (Slides, hinges,…) Pressure Head • Non-reflecting (Far field) Heat Generation • Load functions: Initial Potential • Spatial External Potential • Time/Frequency Element Temperature • Constraint Tables Nodal Temperature • Load Tables Force Moment Displacement Nodal Mass Pressure Element Beam Load Line Beam Load Prestress Prestress for Reinforcement Post Tension

CSys-based Constraint

Spatially Varying Pressure (Function Applied)

Load and Boundary Constraints Pre-Works Tree (Explorer-like)

MS-Excel Load Table (Excel-compatible, Copy/Paste, Input/Delete)

Solution procedures

Solution Procedures

• Linear Equation Solver • • • •

Direct Solution Iterative Solution Mixed Solver Parallel Solver (Intel Pardiso)

• Nonlinear Equation Solver • Eigenvalue Solver

Solution Procedures Nonlinear Systems •

Iterative Procedures • Linear and Constant Stiffness • Regular and Modified Newton-Raphson • Secant (Broyden, BFGS, Crisfield)

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Incremental Procedures • Load and displacement Control • Arc Length Control • Line Search algorithm • Adaptive Load and Time Increments

Availability

HTTP://TNODIANA.COM

TNO DIANA BV

TNO DIANA UK Ltd

Delftechpark 19a 2628 XJ Delft The Netherlands T +31 (0) 88 34262 00 F +31 (0) 88 34262 99

Ground Floor Building 1000 Lakeside North Harbour Western Road Portsmouth PO6 3EZ United Kingdom T +44 (0) 23 9270 4175 F +44 (0) 23 9270 4001

www.tnodiana.com

TNO DIANA North America Inc. 3871 Seven Mile Road Suite 260 MI 48152 Livonia T +1 (0) 877 70 34262