Articles Posted in the " Springs " Category

  • CLOSE COILED HELICAL SPRING -AXIAL TORQUE

    CLOSE COILED HELICAL SPRING -AXIAL TORQUE

    CLOSE COILED HELICAL SPRING -AXIAL TORQUE This torque will rotate the free end with respect to the fixed end. Thus it will change the coil diameter and will be mainly producing the bending effect. Therefore such springs are designed on the basis of pure bending. Further helix angle ‘α’ is small. Let φ be the […]


  • LAMINATED SPRINGS

    LAMINATED SPRINGS

     LAMINATED SPRINGS Introduction This type of spring is very common in use. It has an There is an advantage over the coiled spring. It  acts as a structural member in addition it absorbs a shock. It is used in cars, trucks, buses and trains. This type of spring is made from a number of plates […]


  • Flat Spiral Spring

    Flat Spiral Spring

    Flat Spiral Spring This spring stores energy in it. Thus, it is used in watches, toys, wall clocks, galvanometers. Further, it is also used in  steering wheels and balancing springs for smaller angles of rotation. Recently these are being replaced by pencil cells in the watches and toys.These are used in compact spaces. Spiral springs are shaped […]


  • OPEN COILED HELICAL SPRING – AXIAL COUPLE

    OPEN COILED HELICAL SPRING – AXIAL COUPLE

    OPEN COILED HELICAL SPRING – AXIAL COUPLE Let M be the couple applied to the spring. The applied couple tends to open the spring more. Or decrease the number of turns in the spring. The bending moment if increases the radius of curvature then it is called positive couple.When the applied couple tends to decrease the […]


  • OPEN COILED HELICAL SPRING – AXIAL LOAD

    OPEN COILED HELICAL SPRING – AXIAL LOAD

     OPEN COILED HELICAL SPRING- Axial Load  ONLY UNDER AXIAL LOAD   Spring will be under both bending and torsion. Thus it is under complex stresses. Therefore, maximum principal stress and maximum shear stresses will be found to design such a spring. Let α be the angle of the helix Then the length of n turns of […]


  • CLOSE COILED HELICAL SPRING-UNDER AXIAL FORCE

    CLOSE COILED HELICAL SPRING-UNDER AXIAL FORCE

    CLOSE COILED HELICAL SPRING-UNDER AXIAL FORCE This spring is subjected to either axial load or axial couple. The parameters to be studied in springs are stress, stiffness and resilience. Symbols used Do= outer  coil diameter Di= inside coil diameter Dm=  mean coil diameter = D d=diameter of wire na = number of active turns (circles) […]


  • Salient Features of Springs-2

    Salient Features of Springs-2

      SALIENT  FEATURES OF A SPRING-2 A single spring can perform more than one function. A spring is used to keep a component to bear against a surface. It helps to maintain a contact with a surface. It can engage or disengage a device as in a thermostat for making the operation automatic. Springs are […]


  • Salient Features of SPRINGS-1

    Salient Features of SPRINGS-1

    SPRINGS-1 Springs are elastic objects which are subjected to axial load, eccentric load and twisting moments. These are elastically  deformed significantly under the action of a force or a couple or both. These regain their original size and form on removal of force or couple or both. These store and release energy as and  when […]


  • Mcq: Springs

    Mcq: Springs

    Mcq:  Springs Leaf springs are used in (a) Scooters (b) Bikes (c) Trucks (d) None (Ans: c) Leaf springs use (a) All full length leaves (b) All leaves of different lengths (c) Few full length leaves with truncated leaves (d) None (Ans:c) Leaf springs are designed on the basis of (a) Maximum bending stresses (b) […]


  • mcqs: Springs

    mcqs: Springs

    mcqs: Springs A spring is designed for (a) Higher strength (b) Higher deflection (c) Higher stiffness (d) None (Ans: b)   A carriage spring is designed on the basis of (a) Shear (b) Compression (c) Bending (d) None (Ans: c) A closed helical spring under axial load is designed on the basis of (a) Shear […]