Experimental Study and Simulation of the Stress Relaxation Characteristics of Machine-Harvested Seed Cotton
Seed cotton compression molding solves the inconvenience of seed cotton transportation and storage after mechanical harvesting. Stress relaxation is closely related to the performance of the compressed seed cotton. In this study, an electronic universal testing machine with a homemade compression de...
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MDPI AG
2021-10-01
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| Series: | Applied Sciences |
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| Online Access: | https://www.mdpi.com/2076-3417/11/21/9959 |
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| author | Jun Wang Hongwen Zhang Lei Wang Ximei Wei Meng Wang Yanqing Gu Yunxiao Cai |
| author_facet | Jun Wang Hongwen Zhang Lei Wang Ximei Wei Meng Wang Yanqing Gu Yunxiao Cai |
| author_sort | Jun Wang |
| collection | DOAJ |
| description | Seed cotton compression molding solves the inconvenience of seed cotton transportation and storage after mechanical harvesting. Stress relaxation is closely related to the performance of the compressed seed cotton. In this study, an electronic universal testing machine with a homemade compression device was used to study the stress relaxation characteristics of machine-harvested seed cotton. The stress relaxation model of machine-harvested seed cotton was established, the influence of test factors on the response indexes was analyzed and, finally, stress relaxation characteristics of machine-harvested seed cotton were simulated. Results show that machine-harvested seed cotton stress relaxation characteristics can be described by the five-element Maxwell model. The equilibrium elastic modulus is negatively correlated with moisture content and cross-section dimensions, and the equilibrium elastic modulus is positively correlated with trash content and compression density. The rapid decay time and the residual stress ratio are negatively correlated with moisture content and compression density, but the influence of trash content and cross-section dimensions are limited. The stress relaxation process of machine-harvested seed cotton was simulated using virtual prototype technology, and the maximum error between the experimental and simulated values was obtained as 4.96%. The feasibility of the virtual prototype technique for the viscoelastic simulation of biomaterials was demonstrated. |
| first_indexed | 2024-03-10T06:07:25Z |
| format | Article |
| id | doaj.art-ac37283777f84c1ca4df31f286f6456d |
| institution | Directory Open Access Journal |
| issn | 2076-3417 |
| language | English |
| last_indexed | 2024-03-10T06:07:25Z |
| publishDate | 2021-10-01 |
| publisher | MDPI AG |
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| series | Applied Sciences |
| spelling | doaj.art-ac37283777f84c1ca4df31f286f6456d2023-11-22T20:25:58ZengMDPI AGApplied Sciences2076-34172021-10-011121995910.3390/app11219959Experimental Study and Simulation of the Stress Relaxation Characteristics of Machine-Harvested Seed CottonJun Wang0Hongwen Zhang1Lei Wang2Ximei Wei3Meng Wang4Yanqing Gu5Yunxiao Cai6College of Mechanical and Electrical Engineering, Shihezi University, Shihezi 832003, ChinaCollege of Mechanical and Electrical Engineering, Shihezi University, Shihezi 832003, ChinaCollege of Mechanical and Electrical Engineering, Shihezi University, Shihezi 832003, ChinaCollege of Mechanical and Electrical Engineering, Shihezi University, Shihezi 832003, ChinaCollege of Mechanical and Electrical Engineering, Shihezi University, Shihezi 832003, ChinaCollege of Mechanical and Electrical Engineering, Shihezi University, Shihezi 832003, ChinaCollege of Mechanical and Electrical Engineering, Shihezi University, Shihezi 832003, ChinaSeed cotton compression molding solves the inconvenience of seed cotton transportation and storage after mechanical harvesting. Stress relaxation is closely related to the performance of the compressed seed cotton. In this study, an electronic universal testing machine with a homemade compression device was used to study the stress relaxation characteristics of machine-harvested seed cotton. The stress relaxation model of machine-harvested seed cotton was established, the influence of test factors on the response indexes was analyzed and, finally, stress relaxation characteristics of machine-harvested seed cotton were simulated. Results show that machine-harvested seed cotton stress relaxation characteristics can be described by the five-element Maxwell model. The equilibrium elastic modulus is negatively correlated with moisture content and cross-section dimensions, and the equilibrium elastic modulus is positively correlated with trash content and compression density. The rapid decay time and the residual stress ratio are negatively correlated with moisture content and compression density, but the influence of trash content and cross-section dimensions are limited. The stress relaxation process of machine-harvested seed cotton was simulated using virtual prototype technology, and the maximum error between the experimental and simulated values was obtained as 4.96%. The feasibility of the virtual prototype technique for the viscoelastic simulation of biomaterials was demonstrated.https://www.mdpi.com/2076-3417/11/21/9959stress relaxationmachine-harvested seed cottonrheological propertiesexperimentmathematical modelssimulation of virtual prototype |
| spellingShingle | Jun Wang Hongwen Zhang Lei Wang Ximei Wei Meng Wang Yanqing Gu Yunxiao Cai Experimental Study and Simulation of the Stress Relaxation Characteristics of Machine-Harvested Seed Cotton Applied Sciences stress relaxation machine-harvested seed cotton rheological properties experiment mathematical models simulation of virtual prototype |
| title | Experimental Study and Simulation of the Stress Relaxation Characteristics of Machine-Harvested Seed Cotton |
| title_full | Experimental Study and Simulation of the Stress Relaxation Characteristics of Machine-Harvested Seed Cotton |
| title_fullStr | Experimental Study and Simulation of the Stress Relaxation Characteristics of Machine-Harvested Seed Cotton |
| title_full_unstemmed | Experimental Study and Simulation of the Stress Relaxation Characteristics of Machine-Harvested Seed Cotton |
| title_short | Experimental Study and Simulation of the Stress Relaxation Characteristics of Machine-Harvested Seed Cotton |
| title_sort | experimental study and simulation of the stress relaxation characteristics of machine harvested seed cotton |
| topic | stress relaxation machine-harvested seed cotton rheological properties experiment mathematical models simulation of virtual prototype |
| url | https://www.mdpi.com/2076-3417/11/21/9959 |
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