Fatigue Damage of a Cutter Used for Cutting Cashew Nut under Random Load

To study the fatigue damage of a cutter used for cutting cashew nut, the integratedsimulation platform is established with Hypermesh, LS-Dyna, LS-PrePost, and nCode GlyphWorks.The simulation model is established by Hypermesh. LS-Dyna is used to calculate the k file.LS-PrePost is used as the post-processing software. The rain-flow counting, load superposition andextrapolation are executed using Rainflow module in nCode GlyphWorks. The analysis of thefatigue damage of the cutter is executed using Stress Life module in nCode GlyphWorks. Theequivalent stress time history of different elements in the upper and lower cutters, rain-flowcounting histogram after load spectrum superposition, rain-flow counting histograms after loadspectrum extrapolation, and damage histogram of the cutter are obtained. The results show that thecutter has excellent mechanical properties, and the minimum fatigue life of the cutter is about 495days, which is a conservative solution.