Radioss
Radioss

2021

  1. ホーム
  2. Theory Manual

    This manual provides detailed information about the theory used in the Altair Radioss Solver.

  3. Large Displacement Finite Element Analysis Theory Manual
  4. Interfaces

    Interfaces solve the contact and impact conditions between two parts of a model.

  5. Tied Interface (TYPE2)
  • 新機能
  • 概要
  • Tutorials
  • ユーザーガイド
  • リファレンスガイド
  • 例題集
  • Verification Problems
  • よくある質問
  • Theory Manual
  • User Subroutines
  • Starter入力
  • Engine入力
索引
Radioss

2021

Radioss
  • 新機能

    Radioss 2021の新機能を確認できます。

  • 概要

    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。

  • Tutorials

    Discover Radioss functionality with interactive tutorials.

  • ユーザーガイド

    本マニュアルは、Altair Radiossで利用できる機能やシミュレーション手法の詳細を提供しています。

  • リファレンスガイド

    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。

  • 例題集

    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。

  • Verification Problems

    This manual presents solved verification models.

  • よくある質問

    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。

  • Theory Manual

    This manual provides detailed information about the theory used in the Altair Radioss Solver.

    • Large Displacement Finite Element Analysis Theory Manual
      • Introduction

        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.

      • Basic Equations
      • Finite Element Formulation
      • Dynamic Analysis
      • Element Library

        Radioss element library contains elements for one, two or three dimensional problems.

      • Kinematic Constraints

        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.

      • Linear Stability

        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.

      • Interfaces

        Interfaces solve the contact and impact conditions between two parts of a model.

        • Lagrange Multiplier Method
        • Penalty Method
        • Interface Overview
        • Tied Interface (TYPE2)
        • Auto Contacts
        • ソリッド要素とシェル要素との接触(TYPE3)
        • 汎用接触(TYPE5)
        • Rigid Body Contact (TYPE6)

          This interface is used to simulate impacts between two rigid bodies.

        • 汎用接触(TYPE7)
        • 楕円サーフェスと節点との接触(TYPE14)
        • Ellipsoidal Surface to Segment Contact (TYPE15)
        • Node to Curved Surface Contact (TYPE16)
        • General Surface to Surface Contact (TYPE17)
        • 共通の問題
      • Material Laws

        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.

      • モニター体積

        エアバッグをモニター体積として定義します。モニター体積は、3節点または4節点のシェルプロパティセットを1つ以上持つものとして定義します。

      • Static

        Explicit scheme is generally used for time integration in Radioss, in which velocities and displacements are obtained by direct integration of nodal accelerations.

      • Radioss Parallelization

        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.

    • ALE, CFD and SPH Theory Manual
    • Appendix A: Conversion Tables and Constants
    • Appendix B: Basic Relations of Elasticity

  • User Subroutines

    This manual describes the interface between Altair Radioss and a user’s subroutines.

  • Starter入力

    本マニュアルは、Radiossで使用することのできるすべてのモデル定義キーワードとオプションをリストで提供しています。

  • Engine入力

    本マニュアルは、Radiossで使用することのできるすべてのソリューション定義キーワードとオプションをリストで提供しています。

Radioss
Radioss

2021

  1. ホーム
  2. Theory Manual

    This manual provides detailed information about the theory used in the Altair Radioss Solver.

  3. Large Displacement Finite Element Analysis Theory Manual
  4. Interfaces

    Interfaces solve the contact and impact conditions between two parts of a model.

  5. Tied Interface (TYPE2)
  • 新機能
  • 概要
  • Tutorials
  • ユーザーガイド
  • リファレンスガイド
  • 例題集
  • Verification Problems
  • よくある質問
  • Theory Manual
  • User Subroutines
  • Starter入力
  • Engine入力
索引

Tied Interface (TYPE2)

Refer to Kinematic Constraints for a detailed description.

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