2025
This manual provides detailed information about the theory used in the Altair Radioss Solver.
Interfaces solve the contact and impact conditions between two parts of a model.
Radioss 2025の新機能を確認できます。
Radioss®は、衝突と衝撃ソリューションのための優れた陽解法有限要素ソルバーです。
Discover Radioss functionality with interactive tutorials.
This manual provides details on the features, functionality, and simulation methods available in Altair Radioss.
本マニュアルは、Radiossで使用することのできるすべての入力キーワードとオプションを詳細なリストで提供しています。
このマニュアルは一般的な問題のタイプに関して、Radiossを用いて解かれた例題を示します。
このマニュアルでは、解析済みの検証モデルを紹介します。
このセクションでは、Radiossに関するよくある質問へのクィックレスポンスを提供しています。
Nonlinear finite element analyses confront users with many choices. An understanding of the fundamental concepts of nonlinear finite element analysis is necessary if you do not want to use the finite element program as a black box. The purpose of this manual is to describe the numerical methods included in Radioss.
Radioss element library contains elements for one, two or three dimensional problems.
Kinematic constraints are boundary conditions that are placed on nodal velocities. They are mutually exclusive for each degree of freedom (DOF), and there can only be one constraint per DOF.
The stability of solution concerns the evolution of a process subjected to small perturbations. A process is considered to be stable if small perturbations of initial data result in small changes in the solution. The theory of stability can be applied to a variety of computational problems.
This interface is used to simulate impacts between two rigid bodies.
A large variety of materials is used in the structural components and must be modeled in stress analysis problems. For any kind of these materials a range of constitutive laws is available to describe by a mathematical approach the behavior of the material.
An airbag is defined as a monitored volume. A monitored volume is defined as having one or more 3 or 4 node shell property sets.
Explicit scheme is generally used for time integration in Radioss, in which velocities and displacements are obtained by direct integration of nodal accelerations.
The performance criterion in the computation was always an essential point in the architectural conception of Radioss. At first, the program has been largely optimized for the vectored super-calculators like CRAY. Then, a first parallel version SMP made possible the exploration of shared memory on processors.
This manual describes the interface between Altair Radioss and user subroutines.
Refer to Kinematic Constraints for a detailed description.
