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SkyCiv Structural 3D

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  2. SkyCiv Structural 3D
  3. Applying Loads
  4. Moments

Moments

Moments are the product of force and distance to a point and have the tendency to cause a rotation. Moments can be applied to nodes or at a point along a member. In both cases, the location, magnitude, and sign direction need to be specified. Moments which are applied at an angle to the node or member can be specified by providing the X,Y,Z components of the moment.

Moments follow the sign convention of the right hand grip rule.

  • Positive (+’ve): Counter-Clockwise
  • Negative (-‘ve): Clockwise

Moments applied to Nodes

To apply a point load on a node, simply specify values for:

  • Node ID – The node where the moment is applied.
  • Magnitude about X – Moment about the global X axis.
  • Magnitude about Y – Moment about the global Y axis.
  • Magnitude about Z – Moment about the global Z axis.
  • Load Group – Loads can be grouped with Load Group numbers. The Load Groups can then be multiplied by a factor in the ‘Load Combos’ menu. Optional.

Moments applied to Members

To apply a point load on a member, simply specify values for:

  • Member ID – The member where the point load is applied.
  • Position Along Member – The % position (from node A t B) along a member where the force is to be applied.
  • Magnitude about X – The magnitude of the force in the global X direction. Use negatives to specify the negative X direction.
  • Magnitude about Y – The magnitude of the force in the global Y direction. Use negatives to specify the negative Y direction.
  • Magnitude about Z – The magnitude of the force in the global Z direction. Use negatives to specify the negative Z direction.
  • Load Group – Loads can be grouped with Load Group numbers. The Load Groups can then be multiplied by a factor in the ‘Load Combos’ menu. Optional.

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