Features
Tesca Forces in a simple Bar Structure represents 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 members that are joined together using discs 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 discs by snap-locks. Two of the node discs also form the supports (fixed and free) and are clamped to the  sturdy aluminum 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. The  method of joints enables the bar forces to be determined by formulating a system of equations.

Specifications
Resolution of forces in a single plane, statically determinate system  
3 node discs, 2 of which serving as supports  
3 bars, each fitted with a leaf spring element and dial gauge  
2 fixed bar lengths, 1 variable bar length  
5 different angles adjustable between bars  
Storage system to house the components 

Technical Specifications
Bars  
      -     Fixed bar: l=440mm  
      -     Adjustable bar: l=440, 622, 762mm  
Angle between bars  
      -     60° - 60° - 60° / 45° - 90° - 45° 
      -     30° - 120° - 30° / 30° - 30° - 120° 
Dial gauge  
      -     measuring range: 0...10mm, graduations: 0,01mm  
Weight set: 1x 1N (hanger), 1x 10N, 2x 20N  
Leaf spring element: force measuring range 0...50N  

Experiments
Measurement of bar forces  
Calculation of bar forces by the method of joints  
Comparison: measurement result - calculation - graphical method 

Scope of Delivery
1 frame,  
3 bars,  
3 node discs,  
3 dial gauges,  
1 set of weights,  
1 storage system with foam inlay,  
1 set of instructional material