Static and Fatique Analysis of a Fork

Static and Fatique Analysis of a Fork

grabcad

Fatigue Analysis is the process of evaluating the behavior of objects under cyclic loading and determining their potential for failure due to repeated stressing. This phenomenon, known as fatigue, occurs when objects are subjected to fluctuating stress levels, causing gradual weakening over time even if the induced stresses are below the material's allowable limit. The object eventually fails after a sufficient number of cycles have weakened it beyond its capacity. Fatigue is particularly prevalent in metal objects like rotating machinery, bolts, airplane wings, consumer products, offshore platforms, ships, vehicle axles, bridges, and even bones. However, linear and nonlinear structural studies don't predict fatigue failure; they only determine the object's response to a specified environment of restraints and loads. To conduct a Fatigue Analysis in Solidworks, start by creating static, nonlinear or modal time history dynamic studies as a basis for defining a fatigue study. Next, create the fatigue study (constant amplitude or variable amplitude) and define its properties. Make sure to set proper options before running the study. Define at least one SN curve for each material in the Material dialog box. Results can be viewed by double-clicking an icon in a results folder or right-clicking Result Options and selecting Define/Edit. For variable-amplitude fatigue studies, plot 3D Rainflow matrix or 2D rainflow matrix to plot a chart for the bins of the input load history. Remember that if the results of a reference study used in defining an event are not available, the program runs the reference study automatically before running the fatigue study. Finally, view the results by double-clicking icons in a results folder or right-clicking Results folder and selecting List Fatigue Results.

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