2021

Home
Reference Guide
This manual provides a detailed list of all the input keywords and options available in Radioss.
Optimization Keywords
Optimization Keyword This manual contains the description of the keywords for the Radioss optimization. This manual is compatible with the version 2018 of Radioss.
Design Response
Optimization Keyword In this group, keywords are used to define the design response in optimization.

What's New
Overview
Tutorials
User Guide
Reference Guide
Example Guide
Verification Problems
Frequently Asked Questions
Theory Manual
User Subroutines
Starter Input
Engine Input

2021

What's New
View new features for Radioss 2021.
Overview
Radioss^® is a leading explicit finite element solver for crash and impact simulation.
Tutorials
Discover Radioss functionality with interactive tutorials.
User Guide
This manual provides details on the features, functionality, and simulation methods available in Altair Radioss.
Reference Guide
This manual provides a detailed list of all the input keywords and options available in Radioss.
- File Extensions and Formats
  Radioss format 2021 uses the 12x extension format.
- Single File Input
  This format allows running either Starter or Engine with the same file.
- New Keywords in 2021
  New and modified features in Radioss.
- Starter Input
  This manual provides a list of all the model definition keywords and options available in Radioss.
- Engine Input
  This manual provides a list of all the solution definition keywords and options available in Radioss.
- LS-DYNA Input (Beta)
  This manual contains an alphabetical list of LS-DYNA input files available in Radioss.
- Optimization Keywords
  Optimization Keyword This manual contains the description of the keywords for the Radioss optimization. This manual is compatible with the version 2018 of Radioss.
  - Bulk Data
    Optimization Keyword This group of keywords are used to insert Bulk format data into <name>.radopt file.
  - Design Constraints
    Optimization Keyword In this group, keywords are used to define the design constraints.
  - Design Response
    Optimization Keyword In this group, keywords are used to define the design response in optimization.
    - /DRESP1
      Optimization Keyword Defines a response or a set of responses that are a result of a design analysis iteration. These responses can be used to drive the optimization process and are a measure of how a model performs under a set of constraints, boundary conditions and loading. They can be used as a design objective or as design constraints.
    - /DRESP2
      Optimization Keyword When a desired response is not directly available from OptiStruct, it may be calculated using /DRESP2. This response can be a functional combination of any set of responses resulting from the design analysis iteration. Responses defined in this manner can be used as design objectives or constraints.
  - Design Variables
    Optimization Keyword In this group, keywords are used to define the design variable in optimization.
  - /DEQATN
    Optimization Keyword Specifies one or more equations for use in optimization.
  - /DESOBJ
    Optimization Keyword This keyword can be used to select a response as the objective function of an optimization run by selecting a response as the objective function. The selected response can either be minimized or maximized based on the inputs specified on this keyword.
  - /DTABLE
    Optimization Keyword List of constants to be used in functions defined by /DEQATN.
  - /DVGRID
    Optimization Keyword Defines the relationship between design variable and grid point location.
  - /ESLPART
    Optimization Keyword Defines parts in the model which will be included in ESLM optimization.
- Multi-Domain
  This manual contains the description of the Keywords for the Radioss Multi-Domain.
- Other Files
- Definitions
Example Guide
This manual presents examples solved using Radioss with regard to common problem types.
Verification Problems
This manual presents solved verification models.
Frequently Asked Questions
This section provides quick responses to typical and frequently asked questions regarding Radioss.
Theory Manual
This manual provides detailed information about the theory used in the Altair Radioss Solver.
User Subroutines
This manual describes the interface between Altair Radioss and a user’s subroutines.
Starter Input
This manual provides a list of all the model definition keywords and options available in Radioss.
Engine Input
This manual provides a list of all the solution definition keywords and options available in Radioss.

View All Altair HyperWorks Help

2021

Home
Reference Guide
This manual provides a detailed list of all the input keywords and options available in Radioss.
Optimization Keywords
Optimization Keyword This manual contains the description of the keywords for the Radioss optimization. This manual is compatible with the version 2018 of Radioss.
Design Response
Optimization Keyword In this group, keywords are used to define the design response in optimization.

What's New
Overview
Tutorials
User Guide
Reference Guide
Example Guide
Verification Problems
Frequently Asked Questions
Theory Manual
User Subroutines
Starter Input
Engine Input

Design Response

Optimization Keyword In this group, keywords are used to define the design response in optimization.

/DRESP1
Optimization Keyword Defines a response or a set of responses that are a result of a design analysis iteration. These responses can be used to drive the optimization process and are a measure of how a model performs under a set of constraints, boundary conditions and loading. They can be used as a design objective or as design constraints.
/DRESP2
Optimization Keyword When a desired response is not directly available from OptiStruct, it may be calculated using /DRESP2. This response can be a functional combination of any set of responses resulting from the design analysis iteration. Responses defined in this manner can be used as design objectives or constraints.

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