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.
Elements are a fundamental part of any finite element analysis, since they completely represent (to an acceptable
approximation), the geometry and variation in displacement based on the deformation of the structure.
The different material types provided by OptiStruct are: isotropic, orthotropic, and anisotropic materials. The material property definition cards are used to
define the properties for each of the materials used in a structural model.
High Performance Computing leverages computing power, in standalone or cluster form, with highly efficient software,
message passing interfaces, memory handling capabilities to allow solutions to improve scalability and minimize run
times.
Contact is an integral aspect of the analysis and optimization techniques that is utilized to understand, model, predict,
and optimize the behavior of physical structures and processes.
OptiStruct and AcuSolve are fully-integrated to perform a Direct Coupled Fluid-Structure Interaction (DC-FSI) Analysis based on a
partitioned staggered approach.
Aeroelastic Analysis is the study of the deflection of flexible aircraft structures under aerodynamic loads, wherein
the deformation of aircraft structures in turn affect the airflow.
OptiStruct provides industry-leading capabilities and solutions for Powertrain applications. This section aims to highlight OptiStruct features for various applications in the Powertrain industry. Each section consists of a short introduction, followed
by the typical Objectives in the field for the corresponding analysis type.
This section provides an overview of the capabilities of OptiStruct for the electronics industry. Example problems pertaining to the electronics industry are covered and common solution
sequences (analysis techniques) are demonstrated.
Global-local analysis is a technique in which a full model is solved using two (or more) submodels; one submodel represents
the full structure but at a lower accuracy (for example, a larger mesh size) and the second submodel represents only
a part of the structure (for example, using a smaller mesh size).
Superelement or DMIG (Direct Matrix Input) approach is a known industry standard to efficiently reduce out the user-defined
components to the specified interface grids and this method helps improve the performance of finite element analysis
when used properly.
Preloaded or Prestressed Linear Analysis is any type of structural linear analysis performed on a structure under
prior loading (also termed preloading or prestressing).
Imperfection is used in large displacement nonlinear static analysis, for example, to solve post-buckling problems
combined with the arc-length method, among other techniques.
Cyclic symmetry is a type of symmetry in which a representative (or basic) segment, if patterned circularly about
an axis of symmetry would result in the full model.
OptiStruct generates output depending on various default settings and options. Additionally,
the output variables are available in a variety of output
formats, ranging from ASCII (for example, PCH) to binary files (for example,
H3D).
A semi-automated design interpretation software, facilitating the recovery of a modified geometry resulting from a
structural optimization, for further use in the design process and FEA reanalysis.
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.
The Analysis Techniques section provides an overview of the
following:
Parts and Instances
The Parts and Instances functionality can be used to combine independently created substructures (or, parts) into a single model.
Subcase Specific Modeling
Subcase specific modeling allows analyzing multiple structures in a single solver run.
Global-Local Analysis (Submodeling)
Global-local analysis is a technique in which a full model is solved using two (or more) submodels; one submodel represents the full structure but at a lower accuracy (for example, a larger mesh size) and the second submodel represents only a part of the structure (for example, using a smaller mesh size).
Internal Superelements
Superelement or DMIG (Direct Matrix Input) approach is a known industry standard to efficiently reduce out the user-defined components to the specified interface grids and this method helps improve the performance of finite element analysis when used properly.
Poroelastic Materials (Biot theory)
Poroelastic materials can be used to model coupled fluid-structure systems where the fluid exists within the interstitial spaces of a porous solid.
Prestressed Linear Analysis
Preloaded or Prestressed Linear Analysis is any type of structural linear analysis performed on a structure under prior loading (also termed preloading or prestressing).
Pretensioned Bolt Analysis
Many engineering assemblies are put together using bolts, which are usually pretensioned before application of working loads.
Imperfection
Imperfection is used in large displacement nonlinear static analysis, for example, to solve post-buckling problems combined with the arc-length method, among other techniques.
Cohesive Zone Modeling
Cohesive zone modeling can be used to model adhesive and bonded interfaces and corresponding crack initiation and propagation.
Symbolic Substitution
Symbolic substitution provides flexibility to modify the input file to use parameterized input to define various data fields across the model.
Cyclic Symmetry Analysis
Cyclic symmetry is a type of symmetry in which a representative (or basic) segment, if patterned circularly about an axis of symmetry would result in the full model.
Thickness Mapping
The thickness mapping feature allows the user to map the thickness data from an external forming result file to the corresponding model in OptiStruct.