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The aim is to optimize a hammer blade design to enhance operational efficiency and crushing quality of straw crushers.

March 25, 2026Applied SciencesOpen Access

Design Optimization and Experiment of the Hammer Blade for Straw Crushers

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Experiment finds that optimizing hammer blade structure improves crushing performance in straw crushers, implying better efficiency.

The aim is to optimize a hammer blade design to enhance operational efficiency and crushing quality of straw crushers.
Theoretically analyzed the crushing mechanism and force interactions.
Developed a finite element model for straw fragmentation simulation.
Compared performances of serrated, rectangular, and stepped hammer blades.
Employed Latin hypercube sampling and Kriging surrogate model for parameter importance analysis.
Conducted multi-objective optimization using the NSGA-II algorithm.
Identified the significance of factors as blade thickness, blade width, tooth spacing, and blade length.
Optimal hammer blade configuration: 4 mm thickness, 39 mm width, 4 mm tooth spacing.
The optimized serrated blade improved productivity by 17.49% and pass rate by 5.02% compared to the conventional design.

Wang et al. (2026) studied this question.

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