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Products | Theory of Machines and Properties of Materials | Structural Mechanics | FL 110

FL 110

Framework Experimental System

Technical Description

This demonstration system permits the construction of any number of planar trusses. The bearings and loading mechanisms are mounted on a stable aluminium sectional frame with back plate and anchoring grooves. The steel frame members are interconnected with flexible snap connections and special joint discs. The lengths are graduated in order to achieve common angles. The horizontal layout, with parking blocks under the joints, minimises the effects of dead weight. Ring dynamometers with mechanical dial gauges record the reaction forces. Each bar has a strain gauge to measure the force. The multi-channel measuring amplifier FL 151 and the PC-aided data acquisition software FL 110.11 are required for evaluation purposes. All single parts are supplied on stackable tablets.

Learning Objectives / Experiments

The following experiments are prepared :
Bridge girder according to HOWE
Main framework truss according to HOWE under dead weight and wind pressure load
Main framework truss according to POLONCEAU

The universality of the system makes it possible to show almost any planar truss. There are therefore no restrictions on the design of additional experiments.

Features

Layout of any number of planar trusses possible
Experimental set-up via snap connections, no tools required
Force measurement with strain gauge at each bar
Flat layout eliminates effect of dead weight

Available accessories

FL 110.10 -- Set of Cables for connection to Data Logger
FL 110.11 -- Learning Software Framework
FL 151 -- Multi Channel Measuring Amplifier

Alternative products

FL 111 -- Basic Roof Truss
SE 110.21 -- Experimental Set Forces in a Truss
SE 110.22 -- Experimental Set Redundant Truss
SE 110.38 -- Experimental Set Welded Truss
SE 110.39 -- Experimental Set Wooden Truss
SE 110.44 -- Experimental Set Deflection of Trusses
SE 130 -- Structures Table with Standard Roof Truss

Specification

[1] Universal framework demonstration system
[2] Quick assembly of bar connections with snap connections
[3] Frame members made of stainless steel tubes, Ø10x1mm
[4] Length of bars: 150, 259, 300 and 424mm
[5] max. 10 joints, up to 12 bars per joint
[6] Measurement of member stress with strain gauge in each bar, max. stress 500N each bar
[7] Measurement of reaction force with ring dynamometer elements, tensile and compression force possible up to 500N
[8] Minimisation of effects of dead weight possible with horizontal construction
[9] Frame made of anodised aluminium sections
[10] Quick fastening of experiments in the formed grooves with special tensioning elements
[11] l x w x h 1650x900x150mm

Technical Data

Bar lengths : 150mm, 259mm, 300mm, 424mm
Bar diameter : Ø10x1mm, stainless steel tube
Measurement of member stress : strain gauge in half bridge
5-pin round plug connector with bayonet catch
max. member force : 500N
max. number of junctions : 10
max. number of bars per junction : 12
Ring dynamometer for reaction forces: ±500N

Dimensions and Weight

l x w x h : 1650 x 900 x 150 mm
Weight : ca. 60 kg

Scope of Delivery

12 bars, 10 joint discs, 4 dynamometers, 1 frame with cross-member, 1 experiment instructions

Order Details

021.11000 FL 110 Framework Experimental System