Body Force

Analysis > Components > Body Force

This panel is used to define Gravity on one or more bodies in a simulation.

Description

  • Coordinate system
    The Body Force can be defined in Cartesian, Cylindrical and Spherical coordinate systems. If the model is not aligned with the global coordinate system, then a local coordinate system needs to be created to define Body Force. Global coordinate system is the only available option unless a local coordinate system is created using Create Coordinate System option.
    1. Body Force Definition in Global Coordinate System

      Use the default Global option if the body is aligned with the Global coordinate system. The values of the Gravitational Acceleration are along the X, Y and Z directions in the Global cartesian coordinate system.

    2. Body Force Definition in the Local Coordinate System

      A local cartesian, cylindrical or spherical coordinate system can be created using the Create Coordinate System option if the component is not aligned with the Global coordinate system. The created local coordinate systems are represented by number in the Body Force panel.

  • Gravitational Acceleration

    By default, the Gravitational Acceleration is 9.81 m/s2 in the negative Y direction. It can be specified in the desired direction using the X, Y and Z directional options.

  • Multiplier Function

    The multiplier function can be used to provide inputs that vary with time.