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Self Weight (Gravity)

In one sentence: Apply gravitational acceleration as a body force to the entire analysis — 9.81 m/s² downward by default.

Overview

Workbench: FEM
Menu: FEM → Model → Mechanical Loads → Self Weight (Gravity)

Applies gravitational acceleration as a body force to the whole analysis. The default direction is −Z (downward) at 9810 mm/s².

Parameters

Parameter Description
Gravity Acceleration Magnitude (default 9810 mm/s²)
Direction Usually (0, 0, −1) for downward

Density must be set

Self-weight is proportional to mass. Without a non-zero material density, the load is zero.

Python API

import ObjectsFem
doc = App.ActiveDocument
analysis = doc.getObject("Analysis")

grav = ObjectsFem.makeConstraintSelfWeight(doc, "SelfWeight")
grav.Gravity_x = 0.0
grav.Gravity_y = 0.0
grav.Gravity_z = -9.81
analysis.addObject(grav)
doc.recompute()

See also