dta | Solution Partner for your Test and Analysis
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Altair RADIOSS Linear  RADIOSS Linear is a fast and accurate finite-element solver for linear static and dynamics problems. This modern alternative to NASTRAN, directly supports NASTRAN input and output data file formats (OUTPUT2 and PUNCH) for ease of deployment and interoperability. With superior model checking, error messaging and results accuracy, RADIOSS Linear provides a better user experience while increasing analysis efficiency and results quality. Featuring robust six degrees-of-freedom per grid shell element formulations, RADIOSS Linear is a proven solver technology for linear statics; inertial relief; eigenvalue calculation; buckling; direct and modal frequency response; direct and modal transient response; and random response solution sequences.  Altair RADIOSS Linear Benefits Cost-Effective NASTRAN Replacement The most popular linear analysis problems can be solved with RADIOSS Linear. Deeply integrated in HyperWorks, RADIOSS Linear increases end-user efficiency and significantly reduces corporate investments in third-party solver solutions. Fast Computation Speed for Large Models Accurate Results Modern 6 DOF/grid shell element formulations eliminate problems associated with AUTOSPC and K6ROT fudge factors in NASTRAN. Ready for Optimization Most analysis problems can easily be converted into an optimization problem to quickly improve design performance. NASTRAN Environment Compatible RADIOSS Linear uses standard NASTRAN input syntax and writes 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 Linear output file contains clear and understandable warning, error, and information messages. Robust and Fast Contact Analysis RADIOSS Linear has very fast GRID-to-element contact analysis. Contact definitions include friction and the initial contact can be open or closed.  Altair RADIOSS Linear New Feature Highlights Implementation of CMS Super Elements Linear fluid-structure coupled (acoustic) analysis — Coupling between Fluid and Structural grids in matching meshes — Coupling between Fluid and Structural elements with non-matching meshes Steady-state heat transfer analysis — Thermal material properties, boundary conditions and loading Fatigue analysis Ply based composite data input Random response analysis 
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