leaf spring calculator

➤ calculate the stiffness of semi-elliptical laminated leaf spring
➤ calculate the stiffness of a quarter elliptical laminated leaf spring

calculate the stiffness of a semi-elliptical laminated leaf spring

`K = [8 × E × n × b × t^3] / [3 × L^3]`
e = young's modulus n = number of lobes
b = leaf width t = leaf thickness
l = span k = stiffness

enter a value:

young's modulus (e):
Nm-2
number of leaves (n):
span(l):
m
leaf width (b):
m
leaf thickness (t):
m

calculation result:

rigidity(k):
Nm-1

calculate the stiffness of a quarter elliptical laminated leaf spring

`K = [ E × n × b × t^3] / [6 × L^3]`
e = young's modulus n = number of lobes
b = leaf width t = leaf thickness
l = span k = stiffness

enter a value:

young's modulus (e):
Nm-2
number of leaves (n):
span(l):
m
leaf width (b):
m
leaf thickness (t):
m

calculation result:

rigidity(k):
Nm-1
leaf spring leaf spring is a long arc-shaped spring steel with a rectangular cross-section. in the most common configuration, the center of the arc provides the location of the axle, while the ends form a loop that connects to the vehicle chassis. for very heavy-duty vehicles, leaf springs can be made from multiple blades stacked on top of each other, often with progressively shorter blades. leaf springs can be used for positioning and some degree of damping as well as spring function. although interlaminar friction provides damping, it is poorly controlled and can cause stiction in suspension motion. for this reason, some manufacturers began to use single-leaf springs.
leaf springs can be attached directly to the frame at both ends, or directly to the frame at one end (usually the front end) and connected via a shackle, short swing arm at the other end. elasticity causes the blade to tend to stretch when compressed, creating a softer elasticity. some springs terminate in a female end, called a spoon end (rarely used), which carries the rotating member.
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