Altair OptiStruct

Simulation & CAE software

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What is Altair OptiStruct

Altair OptiStruct is a finite element analysis (FEA) solver focused on structural analysis and structural optimization, including topology, size, and shape optimization. Engineering teams use it to evaluate and improve designs for stiffness, strength, vibration, durability, and weight targets across industries such as automotive, aerospace, and industrial equipment. It is commonly deployed as part of Altair’s CAE workflow alongside pre-/post-processing and other solvers, and it supports multi-disciplinary optimization scenarios that combine structural responses with manufacturing and design constraints.

Strong structural optimization depth

OptiStruct is widely used for topology, size, and shape optimization driven by structural performance objectives and constraints. It supports optimization workflows that incorporate multiple load cases and response types (for example, compliance, stress, frequency, buckling, and fatigue-related measures depending on setup). This makes it well-suited for weight reduction and concept-to-detail refinement compared with general-purpose numerical computing tools that require custom implementations.

Mature FEA solver capabilities

The product provides linear and nonlinear structural analysis capabilities used for static, dynamic, and stability problems. It supports common FEA model constructs such as contacts (where applicable), constraints, materials, and a broad set of element formulations used in industrial structural simulation. For organizations standardizing on solver-based CAE rather than CAD-embedded simulation, it offers a dedicated analysis engine with optimization tightly integrated.

Integration in Altair CAE stack

OptiStruct is designed to work within Altair’s broader simulation ecosystem, including model setup and post-processing tools and other Altair solvers. This can reduce friction when teams need to move between meshing, solving, and results interpretation without switching vendors or file formats repeatedly. It also supports enterprise deployment patterns common in CAE environments (shared compute resources, batch solving, and repeatable runs).

Not a CAD modeling tool

OptiStruct is a solver and does not replace parametric CAD systems used for geometry creation and detailed design. Users typically rely on separate CAD and pre-processing tools to prepare geometry, mesh, and boundary conditions. Teams expecting an all-in-one CAD + simulation experience may need additional software and process integration.

Steep learning curve

Effective use requires knowledge of FEA fundamentals, solver settings, and optimization problem formulation (objectives, constraints, manufacturing controls, and interpretation of results). Model quality, meshing choices, and boundary condition definitions strongly influence outcomes, which can increase onboarding time. Organizations without experienced CAE analysts may need training and governance to avoid incorrect conclusions.

Licensing and compute planning

Commercial CAE solvers typically involve license management and cost planning that scales with usage, features, and compute needs. Optimization and nonlinear analyses can be computationally intensive, which may require access to high-performance workstations or shared compute infrastructure. This can be a barrier for smaller teams compared with lighter-weight or open-source numerical tools.

Plan & Pricing

Pricing model: Altair Units (AUs) licensing (license units model; OptiStruct licensed via Altair License Units). How pricing is presented on the official site: Altair does not publish dollar prices for OptiStruct on its public product pages; customers are directed to request a quote or purchase Altair License Units via Altair Marketplace (pricing/purchase visibility limited to certain geographies/account types). Licensing mechanics (official site details): Solver licensing is expressed in Altair Units and solver runs consume AUs based on cores/GPU (official unit-draw tables apply to OptiStruct/OptiStructFEA; e.g., solver HPC per-core draw lookup table and first-invoke leveling rules are documented). Publicly available example costs: Not published on the vendor site (no USD/EUR amounts for OptiStruct found). Purchase path / notes from official site: "Contact us to request a quote" on the OptiStruct product page; Altair Marketplace allows online purchase of Altair License Units for specific countries/accounts.

(Notes: official Altair documentation shows unit-draw tables and mentions OptiStruct/OptiStructFEA draws, but does not convert AU requirements into public currency prices on the OptiStruct product pages.)

Seller details

Altair Engineering Inc.

Troy, Michigan, USA

1985

Public

https://www.altair.com/

https://x.com/altair

https://www.linkedin.com/company/altair-engineering/

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Altair OptiStruct

What is Altair OptiStruct

Strong structural optimization depth

Mature FEA solver capabilities

Integration in Altair CAE stack

Not a CAD modeling tool

Steep learning curve

Licensing and compute planning

Plan & Pricing

Seller details

Tools by Altair Engineering Inc.

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