LEEA foundation part-8.pdf - Stress in Shackles A shackle is carefully designed so that the strength of the body and pin are approximately equal In

# LEEA foundation part-8.pdf - Stress in Shackles A shackle...

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©LEEA Academy Foundation Step Notes Jan 2017 v1.5 119 Stress in Shackles A shackle is carefully designed so that the strength of the body and pin are approximately equal. In order to achieve this, the pin will be of a larger diameter than the body. The pin acts as a beam. If it is subject to a point load, it will be both in a condition of bending and of double shear. If the jaw is fully filled, so that the load is spread evenly over the full width of the pin, it will only be in double shear. A shackle pin is at its strongest when in a condition of double shear. For a point load, the maximum tensile stress occurs at the centre on the outward facing side of the pin. Standards assume that the pin will be subject to a point load, as this is worst condition, when calculating the pin diameter. Types of Eyebolts Dynamo Eyebolt Notes:

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