NEi Software Nastran Finite Element Analysis

Nastran Finite Element Analysis and Simulation Software

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NEi Advanced Optimization


NEi Optimization software for design automationThe NEi Advanced Optimization software (HEEDS MDO - Hierarchical Evolutionary Engineering Design System Multi-Disciplinary Optimization) by Red Cedar Technology is a package for design automation. It performs process integration, automated design of experiments and optimization, sensitivity studies, reliability and robustness assessments on engineered products and processes. The software can be used to improve any engineering system (structural, thermal, fluid, acoustic, electrical). In structural design applications, for example, it can evolve designs that simultaneously satisfy objectives and meet constraints targets for durability, crashworthiness, stiffness, noise and vibration, mass and cost, manufacturability and reliability.

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Capabilities

checkParameter Optimization Methods and Strategies

  • SHERPA: Automated hybrid adaptive search that uses multiple search tools concurrently
  • Multi-objective SHERPA (Pareto/tradeoff optimization)
  • Global search methods
    • Genetic algorithm (hybrid, hierarchical, heterogeneous, mixed-variable)
    • Advanced proprietary evolutionary search algorithm
    • Simulated annealing
  • Multi-start local search methods
  • Surrogate-based methods (linear and quadratic response surfaces)
  • User-defined methods via application programming interface (API)

checkProcess Integration and Automation

  • Direct portals to common CAE tools for data extraction
    • Output portals for Nastran and ANSYS Workbench
    • Input portals for Nastran, Abaqus, ANSYS Workbench and LS-DYNA
    • Enhanced MoldFlow portal
  • Time is available in output portals, which makes material calibration problems easy to set up
  • Simplified coupling of simulation
  • Automated execution of multiple simulation and analysis tools within a design evaluation process
  • Integration and sharing of data among separate simulations
  • Support for parallel processing on networks, clusters and multiprocessors
  • HEEDS PARALLEL (formerly MPD) allows to run HEEDS MDO optimization studies faster and make more efficient use of your hardware and software resources
  • HEEDS PARALLEL offers support for interfacing with external queuing systems
  • HEEDS internal queuing (now called HEEDS Q) offers the ability to copy files across computers
  • New Evaluation Agent – allows the use of the process automation capabilities in HEEDS MDO to evaluate specific designs without performing a complete study
  • Forming Limit Diagram (FLD) criteria
    • Allows the definition of a FLD in HEEDS MDO for use as a failure criterion in manufacturing and structural performance design studies
    • Eliminates the need for complex post-processing scripts to use a FLD

checkDesign of Experiments

  • Full factorial designs (2-level and 3-level)
  • Fractional factorial designs (2-level and 3-level)
  • Taguchi orthogonal arrays
  • Plackett-Burman designs
  • Latin hypercube designs
  • Central composite designs
  • D-optimal designs
  • Taguchi robust parameter design (RPD)
  • User-defined arrays
  • User-defined response data

checkQuality Design Tools

  • Taguchi robust parameter design (RPD)
  • Structured sampling
  • Random (Monte Carlo) sampling

checkResponse Surfaces

  • Linear and quadratic
  • Multivariate Adaptive Regression Splines (MARS)

checkSolution Monitoring

  • Process control and run-time adjustment capability
  • Real-time solution monitoring with user-controlled graphs and tables
  • User-specified termination criteria
 

System Level Model

Figure 1. System Level Model (pickup truck)

checkUnique Features and Capabilities

  • SHERPA: Simultaneous Hybrid Exploration that is Robust, Progressive, and Adaptive
    • Finds better solutions the first time, identifying the best method or tuning parameters for each problem
    • Enables non-experts to successfully apply automated optimization
    • Performs direct optimization based on actual model evaluations, rather than using approximate response surface models
    • Uses multiple strategies concurrently to effectively and efficiently search even the most complex design spaces
    • Adapts itself to each problem, eliminating the need for user-specified tuning parameters
    • Achieves both global and local search simultaneously
  • MO-SHERPA: Multi-Objective SHERPA
    • Performs multi-objective Pareto search using a modified version of the SHERPA algorithm
    • Handles multiple objectives independently to provide a set of optimized solutions that represent trade-offs among the objectives
    • Uses multiple search strategies simultaneously to more effectively explore the Pareto front
    • Contains no tuning parameters, so non-experts can achieve success every time

checkAnalysis Manager

  • Analysis success check – eliminates the need to define additional responses to determine analysis success
  • Analysis completion criteria – eliminates the need to create special scripts to check for completion of an analysis
  • Unique folder for each analysis – reduces clutter, improves files organization, prevents overwriting of output files with the same names, and allows simultaneous execution of multiple analyses

checkUser Interface

  • Intuitive graphical interface: Pre-processing, run-time monitoring, and post-processing.
  • Simplified coupling of simulation and analysis tools
  • Guided problem set-up procedure
  • Detailed and global views of problem statement
  • Platform independent

checkPlatforms

  • Windows x86-32 - Windows 2000, XP, and Vista
  • Windows x86-64 - Windows XP x64 and Vista x64
  • Linux x86-32 or x86-64- Red Hat Enterprise Linux v4 and 5, SuSE Linux Enterprise v9 and 10

Reduced Subsystem Level Model

Figure 2. Reduced Subsystem Level Model

White Papers

PDFWhite Papers SHERPA - An Efficient and Robust Optimization/Search Algorithm
PDFDesign Optimization of a Composite Wing

Media Coverage

PDFSoftware Fine Tunes a Nitinol Stent

Product Demonstration Options and Information

Contact
Phone (U.S.): (877) - Nastran
Phone (International): +1 (714) 899-1220
Email: info@neisoftware.com
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