Mechanical analysis on changing cross-sectional segment of fibre band in condensing zone in compact spinning

Wang, J.; Yang, Jianping; Bu, Honggang; Fu, Ting; Xi, Qiong; Zhou, Shuai

doi:10.1080/00405000701876444

Cited by 6 publications

(8 citation statements)

References 4 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…With reference to mechanical analysis on changing cross-sectional segment of a fiber band in the condensing zone during compact spinning (Wang et al, 2009), the fiber band's d = 0.61 mm, L = 4 mm, α 0 = 1°, R = 0.8 mm, R′ = 0.116 mm, k = 8.3 × 10 −9 N•m/twist, G = 0.48 × 10 −5 N•m −2 and P = 1960∼3724 Pa, s = 8∼22 mm (usually 18 mm is used), ρ n = 24∼38 mm (usually 30 mm is used), and µ = 0.35∼0.45 (usually 0.4 is used).…”

Section: Analysis and Discussion Of Fbatm Of Fiber Band Partmentioning

confidence: 99%

“…Since 2 π Iv 2 << k , the fiber band's polar moment of inertia can be ignored. With the edge condition s = 0, T w = T d , the method for calculating T d can be found in Wang et al (2009).…”

Section: Construction Of Fbatm Of Fiber Band Partmentioning

confidence: 99%

“…The factors affecting the additional twist produced in Fiber Band Part 2 have been discussed through a mechanical analysis of this part of the fiber band in our previous work (Wang et al, 2009). This paper will lay emphasis on Fiber Band Part 3 and discuss the additional twist produced in this part.…”

Section: Introductionmentioning

confidence: 98%

See 2 more Smart Citations

Mechanical analysis on constant cross-section segment of fiber band in condensing zone during compact spinning

Yang

Wang

et al. 2012

Journal of the Textile Institute

View full text Add to dashboard Cite

It has been found through experiments that under the same spinning condition, the twist of the compact spun yarn is approximately and averagely 5% larger than that of traditional ring-spun yarn. The larger part of the twist is called additional twist. Since the additional twist affects the subsequent processing to some extent, it is worth studying carefully. A theoretical model for analyzing the additional twist of a fiber band with constant cross-section in the condensing zone of a cotton-type compact spinning machine through a mechanical discussion is presented in this paper. Factors affecting the additional twist of the yarn, including the pressure of the profile tube, the friction coefficient between the fiber band and the lattice apron, the length of the suction slot, and the curvature radius of the profile tube, are discussed by numerical integral analysis. The experimental results verified the proposed fiber band additional twist model.

show abstract

Section: Analysis and Discussion Of Fbatm Of Fiber Band Partmentioning

confidence: 99%

Section: Construction Of Fbatm Of Fiber Band Partmentioning

confidence: 99%

See 1 more Smart Citation

Mechanical analysis on constant cross-section segment of fiber band in condensing zone during compact spinning

Yang

Wang

et al. 2012

Journal of the Textile Institute

View full text Add to dashboard Cite

show abstract

“…8,11,13 Subsequently, CCS with a lattice apron has received more attention both in industrial and academic research. [14][15][16][17] More research efforts on the CCS system have been focused on understanding the air-flow domain, which is believed to define the yarn formation process. 16,17 In order to study the flow field in the condensing zone for pneumatic CCS, there are different methods, namely the traditional theoretical method, the experimental measurement method, and the computational fluid dynamics (CFD) method.…”

mentioning

confidence: 99%

Three-dimensional simulation and experimental investigation of three-dimensional printed guiding devices on lattice-apron compact spinning

Saty

Akankwasa

Wang

2020

Textile Research Journal

View full text Add to dashboard Cite

The compact spinning system with a lattice apron utilizes air-flow dynamics to condense fibers in a bunch and enhance the yarn properties. One of the main challenges with this method is the lack of a comprehensive understanding of the air-flow field's effect in the condensing zone. This work presents a numerical and experimental investigation of the effects of three-dimensional (3D) printed guiding devices on the air-flow characteristics and yarn properties. Firstly, the 3D numerical model of the compact spinning system was set up based on the compact spinning machine geometrical dimensions. Secondly, different 3D prototypes were developed, simulated, and analyzed using computational fluid dynamics based on ANSYS software. The prototypes (A-type, B-type, and C-type), selected according to the simulation results, were then 3D printed to enable further experimental investigation. Air-flow analysis results in the air-suction flume area exhibiting a very high negative pressure, and the centerline zone was characterized by high velocity. Experimental results revealed that the three yarns spun with guiding devices had better strength, hairiness, and evenness than those spun without a guiding device. The model developed can be further improved and utilized for commercial purposes and is anticipated to improve compact spun yarn properties significantly.

show abstract

“…Wang et al. 14,15 divided the strand in a condensing region into three parts, and analyzed the process of strand’s cross-section changed from oval to round shape. These studies are based on a line-shaped suction slot (Figure 1).…”

mentioning

confidence: 99%

Mechanical modeling of an arc-shaped suction slot for compact spinning and analysis of additional twists

Yang

Guang-wei

et al. 2017

Textile Research Journal

View full text Add to dashboard Cite

In this study, an arc-shaped suction slot was designed for a pneumatic compact spinning system with a lattice apron. A model was built via mechanical analysis of a fibrous strand in an arc-shaped suction slot to calculate additional twists inserted during condensing. The equations can be solved by using the Runge–Kutta method. The simulation results showed that negative pressure and frictional coefficient of the lattice apron and the fibrous strand have significant effects on additional twists of the strand in an arc-shaped slot. The curvature radius of the arc slot has some influence on the additional twists, while that of the condensing surface has no obvious effect on the additional twists. The radius of the strand may significantly influence the additional twists, but the radius of the strand itself is affected by various other factors. Spinning tests were carried out based on the model design. These results verified the additional twist model of the arc-shaped suction slot.

show abstract

Mechanical analysis on changing cross-sectional segment of fibre band in condensing zone in compact spinning

Cited by 6 publications

References 4 publications

Mechanical analysis on constant cross-section segment of fiber band in condensing zone during compact spinning

Mechanical analysis on constant cross-section segment of fiber band in condensing zone during compact spinning

Three-dimensional simulation and experimental investigation of three-dimensional printed guiding devices on lattice-apron compact spinning

Mechanical modeling of an arc-shaped suction slot for compact spinning and analysis of additional twists

Contact Info

Product

Resources

About