Epsilon Structural Analysis Ltd - Leading Providers of Finite Element Analysis (FEA) Solutions

›› ABOUT

RADIOSS is a next-generation finite element analysis ( FEA ) solver for linear and non-linear simulations. It can be used to simulate structures, fluids, fluid-structure interaction, sheet metal stamping, and mechanical systems. This robust, multidisciplinary solution allows manufacturers to maximize durability, noise and vibration performance, crashworthiness, safety, and manufacturability of designs in order to bring innovative products to market faster.

RADIOSS has been an industry staple for high-speed impact simulation for over 20 years. Automotive and aerospace companies value the contribution it makes in understanding and predicting design behavior in complex environments such as automotive crash simulation. In recent years thru the addition of implicit finite element solver capabilities RADIOSS has become a viable option also for standard analyses and linear dynamics.

The tight integration with HyperWorks environment makes RADIOSS a powerful design tool. Aside from modeling and visualization, RADIOSS models are ready for optimization. Transition to the optimization solver OptiStruct and HyperStudy is easy.

›› BENEFITS

Scalability, Quality, and Repeatability
RADIOSS SPMD multi-processor solutions are highly scalable. The diagnostic capabilities of the solver provide unparalleled model debugging capabilities which contributes to accurate simulation of design behavior. It makes the simulation process less prone to individual error and as such repeatable. Special provisions in the implementation guarantee repeatability of results regardless of the number of processors use in parallel computation.

Responsive Support Organization
RADIOSS support is very responsive reacting to user input. A rigorous quality assurance regime makes it possible to implement new features quickly and without regression in quality.

Cost-Effective NASTRAN Replacement
The most popular linear analysis problems can be solved with RADIOSS. Deeply integrated in HyperWorks, RADIOSS increases end-user efficiency and significantly reduces corporate investments in third-party solver solutions.

Fast Computation Speed for Large Models
The underlying solution algorithms for linear, non-linear, and modal analysis problems are very efficient compared to conventional solvers. With intelligent memory management, RADIOSS easily simulates structures with millions degrees of freedom (DOFs) without any model size restrictions.

Accurate Results
Modern element formulations eliminate problems associated with bad modeling practices and work arounds.

Ready for Optimization
Many analysis problems can easily be converted into an optimization problem that runs in OptiStruct to quickly improve design performance

NASTRAN Environment Compatible
Many RADIOSS solutions use standard NASTRAN type input syntax and write analysis results in both NASTRAN PUNCH and OUTPUT2 formats to support legacy models and compatibility within NASTRAN environments.

Easy to Read Output File
The RADIOSS output file contains clear and understandable warning, error, and information messages.

Workload Management Interface
PBS Professional can efficiently schedule and manage RADIOSS compute workload on server infrastructures to minimize job turn-around-time.

Automated Robustness Studies and Design Optimization
Tightly integrated with OptiStruct and HyperStudy, optimization and design robustness studies can be performed easily.

Comprehensive Material Library
Correlated material laws and rupture models include definitions for concrete, foam, rubber, steel, composites, biomaterials, and more.

›› CAPABILITIES

Solution Types include:

Linear static analysis
Non-linear explicit dynamic analysis
Non-linear implicit quasi-static analysis
Normal modes analysis for real and complex eigenvalues
Linear buckling analysis
Frequency response analysis
Random response analysis
Linear transient response analysis
Linear coupled fluid-structure (acoustic) analysis
Linear steady-state heat transfer analysis coupled with static analysis
Explicit Arbitrary Euler-Lagrangian (ALE) formulation
Explicit Computational Fluid Dynamics (CFD)
Smooth Particle Hydrodynamics (SPH)
One-step (inverse) and incremental sheet metal stamping analysis

A Complete Set of Elements, Materials, Boundary Conditions are available, plus Contact, Composites, Failure Models and Matrix Manipulation are all included in RADIOSS

Innovative element formulations provide accuracy and robust solutions.
A complete set of elements including shell, solid, bar, scalar elements, as well as rigid elements and bodies is available.
Dozens of boundary condition types are supported, for both simple and advanced loadcase and constraint set.
A comprehensive collection of linear and non-linear material, failure and contact models is provided for modeling complex events.
Advanced composites modeling and simulation is leading the industry.
External matrices be used for modeling, matrix generation is provided thru static reduction and Component Modes Synthesis (CMS)

Vehicle Safety
For vehicle occupant safety simulation RADIOSS has access to a large library finite element dummy and barrier models. Partnerships with First Technology (FTSS) and TASS allow RADIOSS to provide the most comprehensive tool set in the industry. In addition, the HyperCrash modeling environment provides outstanding support for automotive crash and safety simulation with RADIOSS.

Multi-Body Simulations
Mechanical systems simulation using rigid and flexible bodies is made possible through the integration with MotionSolve. The solutions include Kinematics analysis, Dynamics analysis, Static and quasi-static analysis, and Linearized solution. All typical types of constraints like joints, gears, couplers, user defined constraints, and high-pair joints can be defined. High pair joints include point-to-curve, point-to-surface, curve-to-curve, curve-to-surface, and surface-to-surface constraints. They can connect rigid bodies, flexible bodies, or rigid and flexible bodies.

›› NEW FEATURES

Contact

Contact for static analysis with linear materials
- Surface-to-surface input allows easier modeling than CGAP elements
- FREEZE option allows modeling of tied interfaces for static, normal models, and other linear analysis types
New special contact for incremental sheet metal stamping

Noise and Vibration Analysis

Combined fluid-structure super-elements for efficient fluid-structure coupling (acoustic) analysis
Grid participation output.
Frequency dependent busing element

Solver Performance

SPMD version for multiple static, linear buckling, direct frequency response load cases
Iterative solver for static analysis
Multi-domain solver for explicit analysis (ongoing industry validation)

Fatigue analysis

Stress- and Strain-life fatigue

Elements for Explicit Analysis

New second order tetra element with four nodes for explicit analysis – same time step as linear tetra, but accuracy of ten-node tetra
Thick shell for composites
Novel thin shell for composites with non-linear strain distribution thru thickness
RBE3 element

Composites

Ply-based composite input for all analysis types
New composite failure models for explicit analysis
Rupture modeling in shells using XFEM for explicit analysis

Fluid-Structure Interaction

Improved meshing for finite volume airbag models

Thermal Analysis

Expanded variety of loadings for convection and heat generation

Input/Output

Single File Input for Block Format
Direct output of MNF ADAMS flexible bodies
Improved error messaging throughout
Automatic memory adjustment in the RADIOSS Starter