Description
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Two Hinged Arch Apparatus
DESCRIPTION:
The two hinged arch is a statically indeterminate structure of the first degree. The horizontal thrust is the redundant reaction and is obtained y the use of strain energy methods. Two hinged arch is made determinate by treating it as a simply supported curved beam and horizontal thrust as a redundant reaction.
EXPERIMENT:
• To study experimentally a 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.
• To obtain the influence line ordinates for horizontal thrust experimentally in a two hinged arch by moving a load along the span and to compare the same with those obtained theoretically.
TECHNICAL SPECIFICATION:
• Apparatus has a span of 100cm and rise 25cm.
• Both ends should have hinge but one of the ends should also be free to move longitudinally.
• A lever arrangement 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 to be supplied with the apparatus.
• Mild steel apparatus complete with a supporting stand and a set of weights.
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Elastically Coupled Beam Apparatus
Apparatus consists of a three parallel bar suspension system with elastic beam at their upper and lower ends. The upper ends of the two outer suspension rods are tied to a vertical wooden board while central suspension rod may be tied to the centre of another elastic beam supported at two outer ends only. Mild steel Apparatus to be supplied should be complete with a supporting stand and a set of weights.
Portal Frame Apparatus
DESCRIPTION:
Portal Frames used for the measurement of horizontal reaction are made stiffer by using M. S. flats rectangular cross section (10mm thick and 40mm wide). All are true to shape. The ends can be other fixed of hinged as desired. The end at which horizontal reaction, is to be measured, is provided with ball bearing rollers, which easily rolls on a smooth rolling platform. At the roller end a chord is attached which is connected further to spring balance. The spring balance records the horizontal reaction, for the measurement of slope and deflection. Both the columns of the portal frame can be clamped (fixed) or pivoted (hinged) and required.EXPERIMENT:
• To study the behavior of a portal frame under different end conditions.TECHNICAL SPECIFICATION:
• Apparatus made up of M.S. plate of rectangular section of 3mm thick x 40cm wide. • Frame is provided with a provision to achieve different end conditions viz. hinged, roller & fixed. • The size of portal will be 40cm x 60cm. Portal may also have a provision for pulley arrangement and hook arrangement for horizontal loading at different positions. • Apparatus is to be supplied complete with a supporting stand and a set of weights • Electronic load cells, displacement cell and Electronic Control Unit (ECU) provided with apparatus. • Software for digital calculations to easily performs by students.OPTIONAL ACCESSORIES:
• PC/Laptop Set.
Pinned Joint Model
SPECIFICATION:
Model consists of hinged. Model will be able to demonstrate the qualitative behavior of the truss under load. As are very flexible, a compression members will easily it`s bucking i.e. It will curve of plain. The tension member however remains straight and tight. The student will therefore have a visual picture of the type of stresses i.e. Compressive or tensile that member of truss will carry under various positive of the load. In case of pinned joint truss, the student will be able to observe that angle between members at each joint undergo a small change.
Suspension Bridge Apparatus
DESCRIPTION:
Cables are frequently used to support loads over large spans such as cable stayed for suspension bridges, cable car systems and stadium roof. They are used extensively for permanent guys on structures such as microwave towers and derricks. They are also used for temporary guys during erection. The only force in a cable is direct tension. They are too flexible to carry any moment. A cable is used to carry concentrated loads, uniformly distributed load along its length and uniformly distributed load along the horizontal span. It takes the shape of a polygon under concentrated loads, a catenary under uniform load along its length (such as its own weight), and a parabola under uniform load along the horizontal span.EXPERIMENT:
• Study the Extension of each spring Balance Left & Right Both. • Study of the effect of a point loadTECHNICAL SPECIFICATION:
• Apparatus Consists of two mild steel cables 0.5cm diameter in cross section and 150cm long, pinned to two supports 90cm apart situated symmetrically. • One of the ends can be converted to a roller by applying a known load at the end with the help of suspended pulley system. • Vertical loads can be applied at various points along the span of the beam. • A dial gauge with 25mm travel (with a magnetic base) is to be supplied with the apparatus complete with a supporting stand and a set of weights.
Deflection Of Truss Apparatus
Apparatus consist of 4 panels of a PRATT steel truss, each panel being 40cm in horizontal direction and 30cm in vertical direction. Load can be applied on each panel point. All tension members should be 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 to be supplied should be complete with a supporting stand and a set of weights.
Experimental Capabilities: Apparatus is supplied complete with a supporting stand and a set of weights.
Elastic Properties Of Deflected Beam Apparatus
Apparatus consists of a mild steel beam 2.5cm x 3mm in cross section and 100cm long, pinned to two supports 70cm apart situated symmetrically. One of the ends can be fixed or given a known slope by applying a known moment at 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 25mm travel (with a magnetic base) may be supplied with the apparatus. Apparatus to be supplied should be complete with a supporting stand and a set of weights
Torsion Of Rods Apparatus
INTRODUCTION:
A torsion test is quite instrumental in determining the value of modulus of rigidity of a metallic specimen. The value of modulus of rigidity can be found out thought observations made during the experiment by using the torsion equation.APPARATUS:
1. A torsion testing machine. 2. Twist meter for measuring angles of twist 3. A steel rule and Vernier Caliper or micrometer
Verification Clarke S Maxwell Reciprocal Theorem
Apparatus for Verification of Clarke’s Maxwell Reciprocal Theorem
Apparatus consist of a mild steel beam 100cm long and 1.25cm x 4mm in cross section with graduations at every 10cm along the length. It should be 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 of 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) should be supplied with the apparatus. Apparatus to be supplied should be complete with a supporting stand and a set of weights.
Experimental Capabilities: To verify Clerk’s Maxwell reciprocal theorem by means of a mild steel be
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