Abstract
Fatigue damage is the most important failure mode of wire ropes, and models of cumulative fatigue damage of wire ropes under multiple impact loads have been proposed based on the principle of micro...
Highlights
As key bearing components in engineering project, wire ropes are widely used in the fields of mine, bridge, shipping, aerospace, and aviation because of their flexible spatial spiral structures
Double Pareto lognormal distribution is recommended to express such coupling
The fatigue life Tk under multiple impact loads Sk obeys double Pareto lognormal distribution, the following process is deduced for N sample data N (k)1⁄4^ fN1(k), N2(k), N3(k), . . . , NN(k)g logpNffi(ffikffiffi)ffiffi 1⁄4^
Summary
As key bearing components in engineering project, wire ropes are widely used in the fields of mine, bridge, shipping, aerospace, and aviation because of their flexible spatial spiral structures. Keywords Wire rope, double Pareto lognormal distribution, impact loads, fatigue life, reliability engineering The fitting of cumulative fatigue damage under combined impact loads is carried out by double Pareto lognormal distribution to assess the fatigue life of wire ropes.
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