Forces in a simple bar structure (FL111)

Forces in a simple bar structure (FL111)

resolution of forces in simple bar structures



  • FL 111represents a simple bar structure.
  • In the single plane system, the bars are only subjected to compression and tension. Loads are applied only to the nodes.
  • The unit comprises three bars that are joined together using disks such that the joints are free to move.
  • A longitudinally adjustable bar permits the bar structure to be constructed with different angles. .
  • The bars engage in the disks by snap-locks.
  • Two of the node disks also form the supports (fixed and movable) and are clamped to the sturdy aluminium section base frame.
  • The external load is applied to the upper nodal point by means of weights.
  • The bar forces occurring are measured by the deformation of leaf spring elements in the middle of the bar.

Learning Objective/Experiments:

  • measurement of bar forces
  • calculation of bar forces by the method of joints
  • comparison: measuring result – calculation – graphical method

Scope of delivery:

  • 1 frame
  • 3 bars
  • 3 node disks
  • 3 dial gauges
  • 1 set of weights
  • 1 storage system with foam inlay
  • 1 set of instructional material


Optional: WP 300.09 Laboratory trolley


Due to the continuous development of our products, the goods supplied may vary in detail to that illustrated on this Website.