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Equations

Define dimensions using global variables and mathematical functions, and create mathematical relationships between two or more dimensions in parts and assemblies.

You can use the following as variables in equations:
  • Dimension names
  • Global variables
  • Other equations
  • Mathematical functions
  • File properties
  • Dimension measurements

You can use any supported operators, functions and constants.

  • Accessing the Equations Dialog Box
  • Using the Equations Interface
    The Equations dialog box includes several different views that you can use to create and manage your equations.
  • Create and Edit Equations in the Equations Dialog Box
    You can use the Equations dialog box to create, edit, suppress, unsuppress and delete equations. Global variables and equations are available in one place, and flyout menus help you create global variables and equations more quickly and accurately.
  • Global Variables
    You can create global variables to use in equations. You define global variables in the Equations dialog box For example, Well_Volume = 20000.
  • Linked Values
    Use linked values (also referred to as shared values or linked dimensions) to link two or more dimensions without using equations or relations. When dimensions are linked in this way, any member of the group can be used as a driving dimension. Changing any one of the linked values changes all others to which it is linked.
  • Share Equations Among Models
    You can share equations and global variables among models.
  • Create Equations in the Modify Dialog Box
    When working on a model, you can enter equations and global variables directly in the Modify dialog box for dimensions. You do not have to open the Equations, Global Variables, and Dimensions dialog box to create an equation for a component.
  • Equations and Configurations
    For parts and assemblies that have multiple configurations, you can view the global variables, dimensions, and equations that apply to a specific configuration by using the configuration drop-down list in the upper right corner of any view.
  • Use Equations Example
    In this example, you modify the size of a model using the Equations, Global Variables and Dimensions and Modify dialog boxes.
Parent topic: SolidWorks Fundamentals


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