Engineering Mechanics Lab


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Apparatus For Verification of Clerk's Maxwell Reciprocal Theorem

Code: CEEM002

Verification of reciprocal theorem of deflection using a simply supported beam.

Apparatus consists of a beam 100cm long and 1.25 cm x 4 mm in cross section with graduations at every 10cm along the length. It is supported on two knife edge supports 70cm apart with a 30cm overhang on one side. Reciprocal theorem can be verified by direct measurements of the deflections os various points with the help of a dial gauge due to a load placed at the reciprocal points. A dial gauge with 25mm travel (with a magnetic base) is supplied with the apparatus. Apparatus is supplied complete with a supporting stand and a set of weights.

Elastic Properties of Deflected Beam Apparatus

Code: CEEM006

Verification of moment Area theorem for slopes and deflection of the beam. Apparatus consists of a mild steel beam 2.5cm x 3 mm in cross section and 100cm long, pinned to two supports 70cm apart situated symmetrically. One of the ends can be fixed of given a known slope by applying a known moment of the end with the help of suspended loads. At the other end also a known moment can be applied. Vertical loads can be applied at various points along the span of the beam. A dial gauge with 25 mm travel (with a magnetic base) is supplied with the apparatus . Apparatus is supplied complete with a supporting stand and a set of weights.

Deflection of Truss Apparatus

Code: CEEM010

Deflection of a truss- horizontal deflection & vertical deflection of various joints of a pin jointed truss.

Apparatus consists of 4 panels of a PRATT truss, each panel being 40cm in horizontal direction and 30cm in vertical direction. Load can be applied on each panel point. All tension members are provided with detachable springs so as to obtain appreciable deformation of the member. Direction of the diagonal members may be changed . Apparatus can be used to illustrate visually the nature of forces set up in various members of the Truss. Apparatus is supplied complete with a supporting stand an d a set of weights.

Curved Member Apparatus

Code: CEEM014

Elastic Displacements (Vertical & Horizontal ) of curved members.

Apparatus consists of a steel bar which is used to make the different cur members Viz. circle, semicircle with straight arm, a quadrant of a circle and quadrant of a circle with straight arm. The bottom ends of the members are fixed to the base. Under the application of load at free end, its horizontal and vertical deflection is measured with the help of dial gauges. A dial gauge with 25mm travel (with a magnetic base) is supplied with the apparatus.

Three Hinged Arch Apparatus

Code: CEEM018

Experimental and analytical study of 3 hinged arch and influence line for horizontal thrust.

The model has span of 100cm and rise 25cm, with hinges at supports and crown. One of the ends rests on rollers. Along the horizontal span of the arch various points are marked at equidistant for the application of load. This being a statically determinate structure, the horizontal thrust developed under the action of any load system can be theoretically calculated and will also be measured directly by neutralizing the outward movement of the roller end. A dial gauge with 25mm travel (with magnetic base) is supplied with the apparatus . Apparatus is supplied complete with a supporting stand and a set of weights.

Behavior of Column and Struts Apparatus

Code: CEEM022

Experimental and analytical study of behavior of struts with various end conditions.

Apparatus consists of four spring steel columns which are put along a vertical wooden board. These four columns have different end conditions as below:
  • 1. Both ends pinned
  • 2. Both ends fixed
  • 3. One end pinned and other fixed
  • 4. One end fixed and other end free Apparatus is supplied complete with a supporting stand and a set of weights.

Two Hinged Arch Apparatus

Code: CEEM026

Experiment on a two Hinged arch for horizontal thrust & influences line for horizontal thrust.

The model has a span of 100cm and rise 25cm. Both ends are hinged but one of the ends is also free to move longitudinally. A lever arrangement is fitted at this end for the application of known horizontal inward force for measuring the horizontal thrust. Along the horizontal span of the arch various points are marked at equidistant for the application of load. This being a statically indeterminate. structure of the first degree. A dial gauge with 25mm travel (with magnetic base) is supplied with the apparatus. Apparatus sis supplied completer with a supporting stand and a set of weights.

Pin Joint Truss Apparatus

Code: CEEM030

Experimental and analytical study of 1 3 bar pin jointed Truss.

Apparatus consists of three suspension members (spring balances) of different stiffness which are jointed at a point to form the redundant joint. The upper end of the suspension members being tied in a position to a vertical wooden board. Arrangement is provided on a paper and also elongations and forces in the suspension members by the help of dial gauges. Two dial gauges with 25mm travel (with magnetic bases) are supplied with the apparatus. Apparatus is supplied completer with a supporting stand ans a set of weight.

Unsymmetrical Bending Apparatus

Code: CEEM034

Experimental and analytical study of deflections for unsymmetrical bending of a cantilever beam

Apparatus consists of an angle fo size 1" x 1" x 1/8" or in equivalents metric units of length 80cm is tied as a cantilever beam. The beam is fixed at one end such that the rotation of 450 intervals can be given and clamped such tat the principal axis of its cross-section may be inclined at any angle with the horizontal and vertical planes . Also arrangement is provided to apply vertical load at the free end of the cantilever and to measure horizontal and vertical deflection of the free end. A dial gauged with 25 mm travel (with magnetic is supplied with the apparatus. Apparatus is supplied completer with a supporting stand and a set of weights. base)
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