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In order to prevent the accident of people entrapped in the grain mass of warehouse and protect the life safety of workers, the discrete element engineering EDM(EDEM) method was proposed to simulate the distribution of human body pressure. Firstly, the soft sphere particle model and the basic particle contact model Hertz-Mindlin (no slip) were selected to construct the wheat, corn and rice grain particle models, and the multi-body pressure model of the human body was constructed by coupling multi-body dynamics and EDEM. Secondly, the accident area model was constructed and the simulation parameters were set considering the factors such as accident scene and calculation amount. Finally, the simulation of particle motion process and the analysis of human body surface pressure were completed, and the human body force distribution measuring device of people entrapped in the grain mass was developed. The results show that the buried time of different grains is slightly different, with wheat being less than corn and less than rice. The maximum pressure on the surface of the human body can reach 1.4×106 Pa which fluctuates violently. The average maximum pressure of the weighted sum of the wheat warehouse is 9 864 Pa, that of corn warehouse is 8 255 Pa, and that of rice warehouse is 7 283 Pa. The pressure distribution data provides a reference for accident prevention and related safety training, and provides ideas for the development of protective devices.
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| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |
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