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| Single walnut shell breaking device under directional extrusion test |
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| DOI：10.19902/j.cnki.zgyz.1003-7969.230282 |
| KeyWord:walnut shell breaking finite element directional extrusion |
| FundProject:国家自然科学基金项目(52165038)；云南省教育厅科学研究基金项目(2022Y574)；云南省教育厅科学研究基金项目(2023Y0767) |
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| Abstract: |
| In order to improve the effect of shell breaking, Yangbi big bubble walnuts from Yunnan for the determination of geometric characteristics, and walnut shell breaking directional extrusion test using universal testing machine to explore the flat extrusion head, groove extrusion head and V-groove extrusion head on walnuts in different loading direction of the walnut shell breaking effect, the compression process the curve of the shell breaking force in relation to the displacement in the compression of walnut was fitted, and the finite element was used to analyze the forces during the walnuts compression process. In addition, a single walnut shell breaking device was designed. The results showed that Yangbi big bubble walnuts were the flat round spherical, when the loading rate was 0-60 mm/min, the shell breaking rate was proportional to the loading rate; combined with the finite element results showed that compressing walnuts along the longitudinal diameter with the groove extrusion head, shell rupture was complete and the head structure had a certain degree of protection of the kernel. According to the test directional extrusion and simulation test results, a primary shell breaking and secondary shell breaking successive single walnut directional percussion shell breaking device was designed. The research can provide a theoretical basis and new ideas for the development of walnut shell breaking equipment. |
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