Welcome
What's New
View new features for OptiStruct 2024.
Overview
OptiStruct is a proven, modern structural solver with comprehensive, accurate and scalable solutions for linear and nonlinear analyses across statics and dynamics, vibrations, acoustics, fatigue, heat transfer, and multiphysics disciplines.
Tutorials
Discover OptiStruct functionality with interactive tutorials.
- Run OptiStruct at the Command Line
- Classic HyperMesh Tutorials
  Tutorials using Classic HyperMesh.
  - Run OptiStruct from HyperMesh
  - Basic Small Displacement Finite Element Analysis
  - Advanced Small Displacement Finite Element Analysis
  - Large Displacement Finite Element Analysis
  - Fluid-Structure Interaction Analysis
  - Multibody Dynamics Analysis
    - OS-T: 1900 Dynamic Analysis of a Three-body Model
      In this tutorial, dynamic analysis on a simple three rigid bodies model is performed using OptiStruct. The force of gravity acts along the global Y axis, and the system has one degree of freedom.
    - OS-T: 1910 Dynamic Analysis of a Slider Crank with Flexible Connecting Rod
      In this tutorial you will work with a slider crank model, which consists of a rigid crank, a flexible connecting rod, and a rigid sliding block. The objective of this analysis is to determine the deformation and stress of a flexible connecting rod under the high speed motion of the system.
    - OS-T: 1920 Large Displacement Analysis of a Cantilever Beam
      In this tutorial, you will perform a multibody dynamics analysis (simulation type: Transient Analysis) of a slender cantilever beam using OptiStruct.
    - OS-T: 1930 Generate Flexible Body for use in MotionSolve
      In this tutorial you will use an existing finite element model to generate a flexible body for use in MotionSolve. You will run the model in OptiStruct.
    - OS-T: 1940 MBD Rigid Contact
      In this tutorial you will how to create model contacts using HyperMesh.
    - OS-T: 1950 Curve to Curve Constraint
      In this tutorial, you learn how to model a CVCV (curve-to-curve) joint using HyperMesh
    - OS-T: 1960 Define Point to Deformable Curve Joint
      In this tutorial, a multibody dynamics analysis (simulation type: Transient Analysis) of a hook on a flexible cable are performed using OptiStruct.
  - Topology Optimization
  - Topography Optimization
  - Combination Optimization
  - Size Optimization
  - Shape Optimization
  - Fatigue Analysis
  - Nonlinear Explicit Analysis
    This section presents nonlinear explicit analysis examples generated using OptiStruct. Each example uses a problem description, execution procedures, and results to demonstrate how OptiStruct is used.
  - Aeroelastic Analysis
  - Third Party Interface
- HyperMesh Tutorials
  Tutorials using HyperMesh.
- SimLab Tutorials
  Video tutorials using SimLab.
User Guide
This manual provides detailed information regarding the features, functionality, and simulation methods available in OptiStruct.
Reference Guide
This manual provides a detailed list and usage information regarding input entries, output entries, and parameters available in OptiStruct.
Example Guide
The OptiStruct Example Guide is a collection of solved examples for various solution sequences and optimization types and provides you with examples of the real-world applications and capabilities of OptiStruct.
Verification Problems
This manual presents solved verification models including NAFEMS problems.
Frequently Asked Questions
This section provides quick responses to typical and frequently asked questions regarding OptiStruct.

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Multibody Dynamics Analysis