Force and Moment Symbols

In structural mechanics, forces and moments are graphically represented by arrows.

For a force, which is vector (https://fea-solutions.co.uk/scalar-vector-and-matrix/), a straight single arrow is used to depict it, pointing in the direction the force is acting.

For moments, there are two representations commonly used. The most common is an arrow which is curved around the axis of the moment. This is typically used in graphical user interfaces of  FEA software. The other representation of a moment is using a straight double arrow, with the right hand rule (https://fea-solutions.co.uk/right-hand-rule/) used to define the moment direction.

Please call us today on +44 (0)1202 798991 for any engineering analysis requirements you might have.