![]() One cycle of this type of fatigue loading occurs when a tensile stress of The worst case of fatigue loading is the case known as fully-reversing load. Wires have a constant static tensile load from the weight of the bridge, and an additional tensile load when a train is on the bridge. The suspension wires in a railroad bridge are an example of this type. An example of this type of loading is a chain used to haul logs behind a tractor.Īnother type of fatigue loading is a varying load superimposed on a constant load. The load is removed, so the part goes back to the no-load condition. One type is zero-to-max-to zero, where a part which is carrying no load is then subjected to a load, and later, ![]() There are different types of fatigue loading.
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