DARWIN 10.0 – September 2022
New Features and Enhancements for FAA Certification Assessments
- Axial Blade Slots
- Updated Titanium Hard Alpha Anomaly Distributions
- Security Features for Anomaly Distribution and POD Data
New General Features
- 3D GUI Visualization Enhancements
- SIF Solution for Semi-Elliptical Surface Crack on Hollow Cylinder
- Constraint-Loss Surface Fatigue Crack Correction Model
- Python-Based Scripting Tool
Changes in GUI Menus and FE Models Supported in DARWIN
- New GUI Menus to Support Objectives-Based Data Structure
- FE2NEU Finite Element Model Quality Checks (MQCs)
Speed and Robustness Improvements
- Autoplate Node-Skipping Enhancement
- Autoplate Speed Enhancement for Large 3D FE Models
- Automodeling Speed Enhancements
- Speed Enhancements for User-Defined Cracks
- DARWIN Results File Import Speed Enhancements
- GUI Speed Enhancement for Large 3D FE Models
- Formation Module Programming Guidelines for Improved Execution Speed
General Enhancements
- Updated Limits for Stress Intensity Factor Solutions
- Deterministic Analysis Enhancement
- User-Defined Project Rules
- Setting GUI Preferences via an External File
- User’s Guide Keyword Search Enhancement
DARWIN 9.2 – June 2019
- 2D/3D Surface Autozoning
- Dhondt Fatigue Crack Growth Model
- El Haddad Small Crack Model
- Life/Risk Contour Fracture Plates Visualization
- Location-Specific POD Curves
- Restart Using Intermediate Fracture Plates
- Autoplate Speed/Robustness Improvements
- GUI Node Selection Speed Improvement
- 3D GUI Visualization Enhancements
- Hot Corrosion Enhancements
- Shakedown Enhancement for 1D Geometry Mode
- Mission Scaling Enhancements
- Crack Size Termination Criterion Enhancement
- Bivariant Plate Enhancement
- Fleet Risk Module Enhancement
- 3D Anomalies Enhancements
- Production Inspections on Non-Hoop Planes
- Direct Import of ANSYS and ABAQUS Load Step Times
- GUI File Access Speed Enhancement
- New Treatment of Material Properties Interpolation
DARWIN 9.1 – August 2017
- Zoneless Deterministic Analysis
- Autoplate for 3D Finite Element Models
- Improved Support for Large Finite Element Models
- Enhanced Monte Carlo Sampling by a Response Surface
DARWIN 9.0 – May 2016
- Optimal Autozoning with Gaussian Process Pre-Zones
- Support for 3D Sector Models
- Stress Intensity Factor Solution for Angled Corner Cracks (CC18)
- Formation Life Scaling by Microstructure
- Anomaly Distribution Tracking
- Micromechanical Model for Crack Initiation
- Enhancements for Large Finite Element Models
DARWIN 8.2 – November 2015
- 3D Inherent Analysis using Autozoning
- Support for Shop Visit Anomalies
- New Mission Mixing Interface
- Support for FRANC3D Stress Intensity Factor Solutions
- Stress Intensity Factor Solution for Crack at Chamfered Corner (CC12)
- Material Property Scaling by Microstructure via External User Module
- Random Average Grain Size
- Random Anomaly Orientation
- Corrective Actions via Fleet Assessment Module
- Importance Sampling via Gaussian Processes
- High Cycle Fatigue Stresses from 3D Finite Element Model
- Input 3D Residual Stresses from Finite element Models
- Material Properties File Link
DARWIN 8.1 – March 2015
- Autozoning with Inspection
- Random Residual Stresses in 2D Finite Element Model
- Anomaly Orientation
- Hot Corrosion Pit Anomalies
- 3D Residual Stress from Univariant Stress Gradients
- 3D Surface & 3D Line Zoning
- Updated SIF Solutions for Surface Cracks (SC30 & SC31)
- Component Replacement for Fleet Assessments
DARWIN 8.0 – January 2014
- Optimal Autozoning for Axisymmetric Geometries
- Crack Growth Retardation Capability
- Bivariant Surface Crack at Off-Center Hole Feature (SC29)
- Residual Stresses for All Univariant Crack Types
- Additional Temperature Option for Thermo-Mechanical Fatigue
- Support for Cracks on Non-Hoop Stress Planes
- User Crack Propagation Module
- HDF5 File Format to Store DARWIN Input and Output
DARWIN 7.2 – March 2013
- Automatic Zone Generation for Axisymmetric Geometries
- Time-Dependent Fatigue Crack Growth Analysis
- Parallel Processing using OpenMP Framework
- Residual Stress Profiles for Surface Cracks
- FE2NEU Support for ABAQUS Models with Non-Cartesian Coordinate Systems
- Mission Definition Enhancements
DARWIN 7.1 – February 2011
- Deterministic Analysis Mode
- FAA Analysis Mode for Surface Damage at Hole Feature (AC 33.70-2)
- Automatic Generation of Crack Growth Life Contours
- Treatment of Non-Normal Bivariant Corner Cracks
- High-Cycle Fatigue Threshold Check
- User-Supplied Stress Intensity Factor Tables
- Support for Thermo-Mechanical Fatigue Crack Growth
- Stress Level Sensitivity Stress Ratio Model for NASGRO FCG Format
- Treatment of Material Processing-Related Residual Stresses
- Additional Deterministic Fracture Mechanics Output
- Risk Assessment for Multiple Types of Anomalies
- Compute Life for a Specified Probability of Fracture
- Specify Crack Location by Node ID
- Fleet Assessment Module
DARWIN 7.0 – March 2010
- Automatic Generation of Optimum Fracture Mechanics Plates - Autoplate
- New Stress Intensity Factor Solution for Through-Edge Crack in a Variable Thickness Plate (TC15)
- Enhanced Stress Intensity Factor Solutions for Embedded Crack in Plate (EC04, EC05)
- Bivariant Shakedown Module
- Kt-Regions for Turned Surfaces
- Tool to Compute Surface Area of Blade Slots
- User Specification of Manufacturing Process Credits
- FAA Hole Feature Surface Damage Report Form
- ABAQUS Translator in FE2NEU
- New Configuration for Display of GUI Warning Messages
- Crack Growth Life Interpolation
- Treatment of Large Results Files
DARWIN 6.1 – July 2008
- Stress Concentration Factors for General Inherent Analysis Mode
- New 2D Surface Damage Analysis Mode (Support for Turned Surfaces)
- New Crack Types and Revision of Existing Crack Types
- New Fatigue Crack Growth Models (NASGRO® and Multilinear Equations)
- Mission Scaling Factor Enhancements
- Multiple Load Steps for 3D Surface Damage Analysis Mode
- New Finite Element Results Translator – FE2NEU
DARWIN 6.0 – December 2006
- New FAA Analysis Mode for Titanium Hard Alpha Anomalies (AC 33.14-1)
- Probabilistic Treatment of Multiple Anomalies
- User Module for Crack Formation
- 3D Anomaly Modeling
- Production Inspection Capability
- Bivariant Stress Intensity Factor Solution for Corner Crack at Hole (CC10)
- Comprehensive Verification Checks
- Encryption Capability
- Crack Animation Enhancement
- Report Generation Enhancement
DARWIN 5.2 – July 2005
- New Bivariant Stress Intensity Factor Solution for Corner Crack in Plate (CC09)
- New Bivariant Stress 3D Visualization Capability
- Improved Shop Visit Model
- Enhanced Keyword Support for DARWIN Library Files
DARWIN 5.1 – December 2004
- Updated Stress Intensity Factor Solutions (SC17, SC18, and CC08)
- 3D Surface Damage Analysis Enhancements
- Unlimited Number of Load Blocks
- Material File Improvements
- Parallel Processing using MPI Framework
- GUI Batch Processing
- Capability to Execute ANS2NEU from GUI
- Finite Element Filtering
DARWIN 5.0 – May 2004
- Support for Mission Mixing
- Initial 3D Capabilities for Surface Damage Mode
- Capability to Import and Extract Stresses from 3D Finite Element Models
- Redesigned and Expanded Surface Damage Mode
- New DARWIN configuration file
DARWIN 4.2 – November 2003
- DARWIN Analysis Code for Windows and Linux platforms
- Direct Execution of DARWIN Analysis Code from GUI
- Enhanced Capability to Fit Stress Gradients with Polynomials
DARWIN 4.1 – November 2002
- Simultaneous Editing of Zone Properties
- Automated Report Generation
- Deterministic Crack Growth
DARWIN 4.0 – August 2002
- Surface Damage Analysis Mode
- New Stress Intensity Factor Solutions
- Polynomial and Weight Function Methods
DARWIN 3.5 – March 2002
- Restart Capability
- Element Subdivision
- Onion Skinning
DARWIN 3.4 – December 2000
- Upgraded Stress Intensity Factor Solutions
- Inspection Transition
- Rainflow and Shakedown
- Confidence Bounds
DARWIN 3.3 – November 1999
- GUI Support For Finite Element Models with Non-Axisymmetric Elements
- Automatic Placement of Crack in Maximum Stress Location
- Implemented Walker Interpolation for Several Fatigue Crack Growth Methods.
DARWIN 3.2 – July 1999
- Importance Sampling Method - Accuracy and Computation Speed Improvements.
- Post-Processing Capabilities in GUI