|
| A modified temperature-controlled grain direct shearing apparatus and its application in soybean mechanical properties research test |
| |
| DOI：10.19902/j.cnki.zgyz.1003-7969.230377 |
| KeyWord:temperature-controlled direct shearing apparatus soybean grain group mechanical property temperature effect |
| FundProject:河南省高等教育教学改革研究与实践重点项目（2021SJGLX144）；河南工业大学教育教学改革研究与实践重点项目（JXYJ2021006）；河南省科技研发计划联合基金项目（222103810075）；河南工业大学创新基金支持计划专项资助（2022ZKCJ07） |
|
| Hits: 776 |
| Download times: 823 |
| Abstract: |
| To obtain the mechanical parameter of grain under the temperature influence and provide reference for the related design of silos, the thermal insulation shear box and intelligent temperature control system were installed based on the existing grain static and dynamic direct shearing apparatus. A series of temperature-controlled direct shear tests were performed under the conditions of soybean moisture content 8.99%-15.12%, porosity 36%, temperature 25-45 ℃, vertical stress 50-200 kPa, shear rate 2.4 mm/min and shear displacement amplitude 20 mm. The parameters of shear strength and the corresponding deformation were obtained to consider the effect of temperature. The results showed that the internal friction angle ranged from 37.1° to 44.6°, and the occlusal stress ranged from 9.6 kPa to 21.2 kPa. The increase of temperature could significantly reduce the dilatancy of soybean grain group and change its strength characteristics. The temperature control of the modified temperature-controlled grain direct shearing apparatus is stable, and the test results meet the test requirements, so it can provide strong support for research experiments conducting, scientific and technological innovation and engineering applications. |
| View full text View/Add Comment Download reader |
| Close |
|
|
|
