锯齿轧花中含棉籽棉朵模型的构建与仿真

doi:10.13475/j.fzxb.20190900806

纺织学报 ›› 2020, Vol. 41 ›› Issue (09): 27-32.doi: 10.13475/j.fzxb.20190900806

锯齿轧花中含棉籽棉朵模型的构建与仿真

胡文¹, 王迪¹, 陈晓川¹(), 汪军², 李勇³

1.东华大学机械工程学院, 上海 201620
2.东华大学纺织学院, 上海 201620
3.塔里木大学机械电气化工程学院, 新疆阿拉尔 843300

收稿日期:2019-09-02 修回日期:2020-05-15 出版日期:2020-09-15 发布日期:2020-09-25
通讯作者: 陈晓川
作者简介:胡文(1996—),男,硕士生。主要研究方向为静力学与动力学建模与仿真。
基金资助:
国家自然科学基金项目(11762020)

Finite element simulation of cotton serrated ginning state based on cottonseed modeling

HU Wen¹, WANG Di¹, CHEN Xiaochuan¹(), WANG Jun², LI Yong³

1. College of Mechanical Engineering, Donghua University, Shanghai 201620, China
2. College of Textiles, Donghua University, Shanghai 201620, China
3. College of Mechanical and Electronic Engineering, Tarim University,Alar, Xinjiang 843300, China

Received:2019-09-02 Revised:2020-05-15 Online:2020-09-15 Published:2020-09-25
Contact: CHEN Xiaochuan

摘要/Abstract

摘要：

为方便分析锯齿轧花过程中籽棉的受力状况以期提高皮棉质量,在已有的层合板棉朵模型和三维编织棉朵模型基础上,提出了一种含棉籽的棉朵模型。该模型基于实际棉朵中棉籽以及棉纤维束排列呈立体网状结构的规律,假设纤维束具有圆形截面,截面形状沿轴向保持不变,在该模型的基础上利用ANSYS Workbench对轧花过程进行了模拟,研究了不同锯齿滚筒转速和棉籽密度对轧花过程的影响。结果表明:锯齿滚筒转速越大,棉纤维受影响越剧烈,但转速过大也会损伤棉纤维,棉籽密度在580 kg/m³时锯齿轧花效果最明显;实验值与模拟值误差相对较小,说明了模型的合理性。

关键词: 锯齿轧花, 棉纤维, 棉籽, 有限元模型, ANSYS Workbench

Abstract:

In order to analyze the stress state of seed cotton in serrated ginning process and improve the quality of lint cotton, a new model of seeded cotton was proposed in this paper based on the existing model of seeded cotton and the fiber network configuration in the actual seeded cotton. The bundled fibers were simulated to have a circular cross-section throughout the length of the fiber along the axis. On the basis of the model, ANSYS Workbench was used to simulate the ginning process, and the influence of different sawtooth speed and cottonseed density on the ginning process was analyzed. It can be seen from the results that the greater the is sawtooth speed, the more severe is the impact of the cotton fiber, but higher sawtooth speed is prone to causing damages to the cotton fiber. The effect of sawtooth ginning is most obvious when the cotton seed density is 580 kg/m³. The error between the experimental and the simulated values is small, which shows the rationality of the model.

Key words: serrated ginning, cotton fiber, cottonseed, finite element model, ANSYS Workbench

中图分类号:

TS113

胡文, 王迪, 陈晓川, 汪军, 李勇. 锯齿轧花中含棉籽棉朵模型的构建与仿真[J]. 纺织学报, 2020, 41(09): 27-32.

HU Wen, WANG Di, CHEN Xiaochuan, WANG Jun, LI Yong. Finite element simulation of cotton serrated ginning state based on cottonseed modeling[J]. Journal of Textile Research, 2020, 41(09): 27-32.

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类别	最大荷重/N	压缩强度/MPa	弹性模量/MPa	最大压缩量/mm
最大值	71.470	2.233	14.047	2.386
最小值	21.542	0.673	6.694	1.329
平均值	55.865	1.746	11.071	1.975

类别	弹性模量/MPa	泊松比	密度/(kg·m^-3)
锯齿	207 000	0.29	7 850
棉朵	2 400	0.40	400
棉籽	11	0.33	500

滚筒转速/(r·min^-1)	最大应力/MPa	最大应变
435	345.97	0.935
507	392.49	1.009
580	458.29	1.134
625	484.20	1.224
725	494.22	1.325

棉籽密度/(kg·m^-3)	最大应力/MPa	最大应变
500	345.97	0.954
520	341.54	0.960
540	338.13	0.935
560	347.34	0.952
580	358.66	0.975

锯齿轧花中含棉籽棉朵模型的构建与仿真

Finite element simulation of cotton serrated ginning state based on cottonseed modeling

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