Table of Contents

1. Probabilistic Design
1.1. Understanding Probabilistic Design
1.1.1. Traditional (Deterministic) vs. Probabilistic Design Analysis Methods
1.1.2. Reliability and Quality Issues
1.2. Probabilistic Design Terminology
1.3. Using Probabilistic Design
1.3.1. Create the Analysis File
1.3.2. Establish Parameters for Probabilistic Design Analysis
1.3.3. Enter the PDS and Specify the Analysis File
1.3.4. Declare Random Input Variables
1.3.5. Visualize Random Input Variables
1.3.6. Specify Correlations Between Random Variables
1.3.7. Specify Random Output Parameters
1.3.8. Select a Probabilistic Design Method
1.3.9. Execute Probabilistic Analysis Simulation Loops
1.3.10. Fit and Use Response Surfaces
1.3.11. Review Results Data
1.4. Guidelines for Selecting Probabilistic Design Variables
1.4.1. Choosing and Defining Random Input Variables
1.4.2. Choosing Random Output Parameters
1.5. Probabilistic Design Techniques
1.5.1. Monte Carlo Simulations
1.5.2. Response Surface Analysis Methods
1.6. Postprocessing Probabilistic Analysis Results
1.6.1. Statistical Postprocessing
1.6.2. Trend Postprocessing
1.6.3. Generating an HTML Report
1.7. Multiple Probabilistic Design Executions
1.7.1. Saving the Probabilistic Design Database
1.7.2. Restarting a Probabilistic Design Analysis
1.7.3. Clearing the Probabilistic Design Database
1.8. Example Probabilistic Design Analysis
1.8.1. Problem Description
1.8.2. Problem Specifications
1.8.3. Using a Batch File for the Analysis
1.8.4. Using the GUI for the PDS Analysis
2. Variational Technology
2.1. Harmonic Sweep Using VT Accelerator
2.1.1. Structural Elements Supporting Frequency-Dependent Properties
2.1.2. Harmonic Sweep for Structural Analysis with Frequency-Dependent Material Properties
3. Adaptive Meshing
3.1. Prerequisites for Adaptive Meshing
3.2. Employing Adaptive Meshing
3.3. Modifying the Adaptive Meshing Process
3.3.1. Selective Adaptivity
3.3.2. Customizing the ADAPT Macro with User Subroutines
3.3.3. Customizing the ADAPT Macro (UADAPT.MAC)
3.4. Adaptive Meshing Hints and Comments
3.5. Where to Find Examples
4. Rezoning
4.1. Benefits and Limitations of Rezoning
4.1.1. Rezoning Limitations
4.2. Rezoning Requirements
4.3. Understanding the Rezoning Process
4.3.1. Overview of the Rezoning Process Flow
4.3.2. Key Commands Used in Rezoning
4.4. Step 1: Determine the Substep to Initiate Rezoning
4.5. Step 2. Initiate Rezoning
4.6. Step 3: Select a Region to Remesh
4.7. Step 4: Perform the Remeshing Operation
4.7.1. Choosing a Remeshing Method
4.7.2. Mesh Control
4.7.3. Remeshing Multiple Regions at the Same Substep
4.8. Step 5: Verify Applied Contact Boundaries, Surface-Effect Elements, Loads, and Boundary Conditions
4.8.1. Contact Boundaries
4.8.2. Surface-Effect Elements
4.8.3. Pressure and Contiguous Displacements
4.8.4. Forces and Isolated Applied Displacements
4.8.5. Nodal Temperatures
4.8.6. Other Boundary Conditions and Loads
4.9. Step 6: Automatically Map Variables and Balance Residuals
4.9.1. Mapping Solution Variables
4.9.2. Balancing Residual Forces
4.9.3. Interpreting Mapped Results
4.9.4. Handling Convergence Difficulties
4.10. Step 7: Perform a Multiframe Restart
4.11. Repeating the Rezoning Process if Necessary
4.11.1. File Structures for Repeated Rezonings
4.12. Postprocessing Rezoning Results
4.12.1. Using the Database Postprocessor (POST1)
4.12.2. Using the Time-History Postprocessor (POST26)
4.13. Rezoning Restrictions
4.14. Rezoning Examples
4.14.1. Example: Rezoning Using a Program-Generated New Mesh
4.14.2. Example: Rezoning Using a Generic New Mesh
5. Mesh Nonlinear Adaptivity
5.1. Mesh Nonlinear Adaptivity Benefits, Limitations and Requirements
5.1.1. Rubber Seal Simulation
5.1.2. Crack Simulation
5.1.3. Metal Forging Simulation
5.2. Understanding the Mesh Nonlinear Adaptivity Process
5.2.1. Checking Nonlinear Adaptivity Criteria
5.3. Mesh Nonlinear Adaptivity Criteria
5.3.1. Energy-Based Criterion
5.3.2. Position-Based Criterion
5.3.3. Contact-Based Criterion
5.3.4. Mesh-Quality-Based Criterion
5.4. Criteria-Checking Frequency
5.5. How a New Mesh Is Generated
5.5.1. Generating a New Mesh via Splitting and Morphing
5.5.2. Generating a New Mesh via General Remeshing
5.6. Convergence at Substeps with the New Mesh
5.7. Controlling Mesh Nonlinear Adaptivity
5.8. Postprocessing Mesh Nonlinear Adaptivity Results
5.9. Mesh Nonlinear Adaptivity Examples
5.9.1. Example: Rubber Seal Simulation
5.9.2. Example: Crack Simulation
5.9.3. Metal Forging Simulation
6. 2-D to 3-D Analysis
6.1. Benefits of 2-D to 3-D Analysis
6.2. Requirements for a 2-D to 3-D Analysis
6.3. Overview of the 2-D to 3-D Analysis Process
6.3.1. Overview of the 2-D to 3-D Analysis Process Flow
6.3.2. Key Commands Used in 2-D to 3-D Analysis
6.4. Performing a 2-D to 3-D Analysis
6.4.1. Step 1: Determine the Substep to Initiate
6.4.2. Step 2: Initiate the 2-D to 3-D Analysis
6.4.3. Step 3: Extrude the 2-D Mesh to the New 3-D Mesh
6.4.4. Step 4: Map Solution Variables from 2-D to 3-D Mesh
6.4.5. Step 5: Perform an Initial-State-Based 3-D Analysis
6.5. 2-D to 3-D Analysis Restrictions
7. Rotating Structure Analysis
7.1. Understanding Rotating Structure Dynamics
7.2. Using a Stationary Reference Frame
7.2.1. Campbell Diagram
7.2.2. Harmonic Analysis for Unbalance or General Rotating Asynchronous Forces
7.2.3. Orbits
7.3. Using a Rotating Reference Frame
7.4. Choosing the Appropriate Reference Frame Option
7.5. Example Campbell Diagram Analysis
7.5.1. Problem Description
7.5.2. Problem Specifications
7.5.3. Input for the Analysis
7.5.4. Analysis Steps
7.6. Example Coriolis Analysis
7.6.1. Problem Description
7.6.2. Problem Specifications
7.6.3. Input for the Analysis
7.6.4. Analysis Steps
7.7. Example Unbalance Harmonic Analysis
7.7.1. Problem Description
7.7.2. Problem Specifications
7.7.3. Input for the Analysis
7.7.4. Analysis Steps
8. Submodeling
8.1. Understanding Submodeling
8.1.1. Nonlinear Submodeling
8.2. Using Submodeling
8.2.1. Create and Analyze the Coarse Model
8.2.2. Create the Submodel
8.2.3. Perform Cut-Boundary Interpolation
8.2.4. Analyze the Submodel
8.2.5. Verify the Distance Between the Cut Boundaries and the Stress Concentration
8.3. Example Submodeling Analysis Input
8.3.1. Submodeling Analysis Input: No Load-History Dependency
8.3.2. Submodeling Analysis Input: Load-History Dependency
8.4. Shell-to-Solid Submodels
8.5. Where to Find Examples
9. Element Birth and Death
9.1. Elements Supporting Birth and Death
9.2. Understanding Element Birth and Death
9.3. Element Birth and Death Usage Hints
9.3.1. Changing Material Properties
9.4. Using Birth and Death
9.4.1. Build the Model
9.4.2. Apply Loads and Obtain the Solution
9.4.3. Review the Results
9.4.4. Use Analysis Results to Control Birth and Death
9.5. Where to Find Examples
10. User-Programmable Features and Nonstandard Uses
10.1. User-Programmable Features (UPFs)
10.1.1. Understanding UPFs
10.1.2. Types of UPFs Available
10.2. Nonstandard Uses of the Program
10.2.1. What Are Nonstandard Uses?
10.2.2. Hints for Nonstandard Use
11. State-Space Matrices Export
11.1. State-Space Matrices Based on Modal Analysis
11.1.1. Examples of SPMWRITE Command Usage
11.1.2. Example of Reduced Model Generation in ANSYS and Usage in Simplorer
12. Soil-Pile-Structure Analysis
13. Coupling to External Aeroelastic Analysis of Wind Turbines
13.1. Sequential Coupled Wind Turbine Solution in Mechanical APDL
13.1.1. Procedure for a Sequentially Coupled Wind Turbine Analysis
13.1.2. Output from the OUTAERO Command
13.1.3. Example Substructuring Analysis to Write Out Aeroelastic Analysis Input Data
14. Applying Ocean Loading from a Hydrodynamic Analysis
14.1. How Hydrodynamic Analysis Data Is Used
14.2. Hydrodynamic Load Transfer with Forward Speed
14.3. Hydrodynamic Data File Format
14.3.1. Comment (Optional)
14.3.2. General Model Data
14.3.3. Hydrodynamic Surface Geometry
14.3.4. Wave Periods
14.3.5. Wave Directions
14.3.6. Panel Pressures
14.3.7. Morison Element Hydrodynamic Definition
14.3.8. Morison Element Wave Kinematics Definition
14.3.9. RAO Definition
14.3.10. Mass Properties
14.4. Example Analysis Using Results from a Hydrodynamic Diffraction Analysis

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