Objective: Calibration of discrete element simulation parameters of edible rose petals. Methods: The discrete element method was used to establish the discrete element model of flexible edible rose petals. The combination of physical accumulation test and virtual accumulation test, the placket Burman test, the steepest climbing test and box Behnken test were used to determine the significant factors and parameter values that affect the accumulation angle, and the significant parameters were optimized. Results: The values of the significant factors affecting the stacking angle after parameter optimization were: petal-petal collision recovery coefficient was 0.05, petal-petal rolling friction coefficient is 0.051, petal-stainless steel collision recovery coefficient was 0.046. Conclusion: Based on the virtual stacking experiment, the parameters of discrete element simulation of edible rose petals are calibrated.

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