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Leaf Springs Calculator

Leaf Spring refers to a spring made of a number of strips of metal curved slightly upward and clamped together one above the other. Leaf springs are also called beam springs and flat springs. A simple type of spring made of a small, flat piece of metal often used in automotive applications, such as suspension systems. Spring Rate is half the difference between the loads 1 inch above and 1 inch below a specified position.

mW
cm
mW/cm2
mW/cm2
mW/cm2

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    Formula

    k=8Enbt3/3l3

    Where,
    E = Youngs modulus [Nm-2]
    n = Number of Leaves
    b = Width of leaves [m]
    t = Thickness of leaves [m]
    L = Spam [m]

    Leaf spring is commonly used for the suspension in wheeled vehicles. The term is also used to refer to a bundled set of leaf springs. As the spring flexes, the leaves slide over each other; the resultant friction provides a dampening of the oscillations produced by large spring deflections.

    Example:
    Calculate the Stiffness of the leaf spring for the given details.
    Youngs Modulus (E): 25 mW
    Number of Leaves (n): 15
    Span (L): 10 cm
    Width of Leaves (b): 5 mW/cm2
    Thickness of Leaves (t):20 mW/cm2

    Solution:
    Apply Formula:
    k = 8Enbt3/3l3
    k = 8*25*15*5*203 / 3*103
    k = 15000*8000/3*1000
    k = 120000/3000
    k = 40000 mW/cm2
    Stiffness (k): 40000 mW/cm2

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