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Topology
Create, edit, and cleanup geometry.
Create Topology
Explore the tools used to create topology.
Lines
A line represents a curve in space and is not attached to any surface or solid. A line is a one-dimensional geometric entity.
Extend Lines
Use the Extend Lines tool to make an existing line longer, following the general vector and/or curvature of the input line. You can specify the distance as a numeric value, or extend the line to a specified node, line, surface, or point.

Welcome
What's New
View new features for Altair HyperWorks 2024.1.
Get Started
Learn the basics and discover the workspace.
Tutorials
Learn more about the Altair HyperWorks suite of products with interactive tutorials.
Startup Procedures and Customizations
Start and configure the applications.
Tool Finder
View a list of deprecated panels and their newer, equivalent workflows.
Manage Files and Data
Create, open, import, and save models.
Sessions and Report Templates
Set up sessions and create report templates.
Interface with External Products
Solver interfaces supported in HyperMesh.
Entities and Solver Interfaces
A solver interface is made up of a template and a FE-input reader.
Browsers
Browsers provide a structured view of model data, which you can use to review, modify, create, and manage the contents of a model. In addition to visualization, browsers offer features like search, filtering, and sorting, which enhance your ability to navigate and interact with the model data.
Sketching
Create and edit 2D parametric sketch geometry.
Topology
Create, edit, and cleanup geometry.
- Geometry Preferences
  Define geometry preferences.
- Setup Topology
  Explore the tools used to setup topology.
- Create Topology
  Explore the tools used to create topology.
  - Points and Nodes
    Learn about creating, editing, and extracting points and nodes.
  - Shapes
    Create and edit circles and rectangles with the Shapes tool.
  - Lines
    A line represents a curve in space and is not attached to any surface or solid. A line is a one-dimensional geometric entity.
    - Create and Edit Lines
      Use the Create Lines tool to draw free lines for geometry construction and to generate meaningful snap locations to be used by other tools.
    - Create and Edit Polylines
      Use the Create Polylines tool to draw polylines for geometry construction and to generate meaningful snap locations to be used by other tools.
    - Combine Lines
      Use the Combine Lines tool to create a new continuous line segment between two existing lines, resulting in a single seamless line.
    - Extend Lines
      Use the Extend Lines tool to make an existing line longer, following the general vector and/or curvature of the input line. You can specify the distance as a numeric value, or extend the line to a specified node, line, surface, or point.
  - Create Ruled Surfaces and Solids
    Use the Ruled tools to create surfaces/solids by interpolating lines and surfaces either linearly or smoothly.
  - Faces
    A face is a single Non-uniform Rational B-Spline (NURBS) and is the smallest area entity. It has a separate underlying mathematical definition, specified when it was created.
  - Extrude/Revolve
    Use the Extrude/Revolve tool to drag and spin lines, surfaces, and nodes in order to create surfaces or solids.
  - Offset Geometry
    Use the Offset tool to offset surfaces, solids, lines, elements, or faces.
  - Midlines
    Use the Midlines tool to create midlines from existing lines, surface edges, or tube solids.
  - Extract Entities
    Use the Extract tool to convert sketches into geometry lines and surfaces with the realize option. Delete lines and surfaces converted from a sketch entity with the unrealize option.
  - Ribs
    Use the Ribs tool to create and modify simple ribs between two surfaces.
  - Create and Edit Feature Edges
    Use the Feature Edges tool to create and edit mesh controls on an edge.
- Edit Topology
  Explore the tools used to edit topology.
- Use Parasolid
  The Use Parasolid option, found in multiple Topology tools, helps you in creating/editing geometries using a parasolid geometry modeling kernel.
FE Geometry
FE geometry is topology on top of mesh, meaning CAD and mesh exist as a single entity. The purpose of FE geometry is to add vertices, edges, surfaces, and solids on FE models which have no CAD geometry.
Meshing and Elements
Explore the different types of mesh you can create in HyperMesh and create and edit 0D, 1D, 2D, and 3D elements.
Model Build and Assembly
Create, organize and manage parts and subsystems.
Composites
HyperMesh composites modeling.
Connectors
Create connections between parts of your model.
Morph
Rapidly change the shape of the FE mesh without severely sacrificing the mesh quality.
Skeleton Modeling
Create a reduced ordered model to facilitate optimization at the concept phase.
Design Space
Workflow to support topology optimization model build and setup.
Optimization
Setup an Optimization in HyperMesh.
Design Explorer
Multi-disciplinary design exploration and optimization tools.
Validate
Validate the model built before running solver analysis.
Analyze
Models require loads and boundary conditions in order to represent the various physics and/or physical equivalents to bench and in-use testing.
Axisymmetry
Reduce a full 3D model with axisymmetric surfaces while accounting for imperfections.
Concept Modeling
Tools and workflows that are dedicated to rapidly creating new parts for specific use cases, or amending existing parts. The current capabilities are focused on stiffening parts.
Crash and Safety
Tools used for crash and safety analysis.
Airbag
Use airbag folder utilities and export a resulting airbag in a Radioss deck.
Aerospace
Essential utility tools developed using HyperMesh-Tcl.
Aeroelasticity
Import an aeroelastic finite element model with Nastran Bulk Data format.
Certification
Framework to plug certification methods to assess margin of safety from the model and result information.
PhysicsAI
Use PhysicsAI to build fast predictive models from CAE data. PhysicsAI can be trained on data with any physics or remeshing and without design variables.
Results Data
Results data can be post-processed using both HyperMesh and HyperView.
Developer
The Developer ribbon contains tools for automation and customization.
Plot Data
HyperGraph is a data analysis and plotting tool with interfaces to many file formats.
Multibody Modeling
MotionView is a general pre-processor for Multibody Dynamics.
Media Files
MediaView plays video files, displays static images, tracks objects, and measures distances.
Tabulate Results
Use TableView to create an Excel-like spreadsheet.
Text Files
TextView math scripts reference vector data from HyperGraph windows to automate data processing and data summary.
Publishing and Reporting
Create, define, and export reports.

View All Altair HyperWorks Help

Extend Lines

Use the Extend Lines tool to make an existing line longer, following the general vector and/or curvature of the input line. You can specify the distance as a numeric value, or extend the line to a specified node, line, surface, or point.

Note: This is not applicable for FE geometry. The selectors and operation are strictly for CAD lines.

From the Topology ribbon, Lines tool group, click the Combine/Extend Lines tool.

Figure 1.
Select Extend from the guide bar drop-down.
Select lines to extend.
Extend in the following ways:
- Drag the manipulator or enter a distance in the microdialog.
  If the Follow curvature option is selected, the extended line follows the input line curvature. If left unchecked, a straight-line extension is created.
- Activate the Choose target checkbox to extend the line to a target point, node, line, or surface.
  
  Figure 2.
  
  Specify the range that the extended line must fall within to connect to the target geometry using capture radius microdialog. If the end of the extended line is within the capture radius of the target geometry, then the coordinates are mapped to the target geometry.
On the guide bar, click one of the following:
- - Apply and stay in the tool
- - Apply and close the tool
- - Exit the tool without applying