The device consists of three suspension elements (spring balances) with varying stiffness, connected at a single point to form a redundant joint. The upper ends of the suspension members are attached to a vertical wooden board. A vertical load can be applied to the joint, allowing for the measurement of its horizontal and vertical displacement on paper. Dial gauges are used to measure the elongations and forces in the suspension members. The device includes dial gauges with magnetic bases for precise measurement.

Experimental Objective

Comparison of experimental and theoretical results of forces in the members and the component displacement of the loaded joint D of a three bar suspension system for vertical loads.
Or
To study two hinged Arch for the horizontal displacement of the roller end for a given system of loading and to compare the same with those obtained analytically.

Specification

The apparatus has a span of 100 cm and a rise of 25 cm. Both ends are hinged, with one end free to move longitudinally. A lever arrangement is installed at this free end to apply a known horizontal inward force, allowing for the measurement of horizontal thrust. Various points along the horizontal span of the arch are marked at equal distances for the application of load. This structure is statically indeterminate of the first degree. The apparatus is supplied with a dial gauge featuring 25 mm travel and a magnetic base. The mild steel apparatus comes complete with a supporting stand and a set of weights.

Utilities required Other than above Supply

 Redundant joint apparatus

dial gauge 1 no.

Magnetic base 1 no.
Hangers 1 nos.
Weight of 500gm as per requirement.