Experiments and computer simulation analysis of impact behaviors of micro-sized abrasive in waterjet cutting of thin multiple layered materials

Lee, Jung-Han; Park, Kang-Su; Kang, Myung Chang; Kang, Bo; Shin, Bo Sung

doi:10.1016/s1003-6326(12)61817-2

Cited by 6 publications

(3 citation statements)

References 6 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…28 And stress distributions shown in Figure 6(a) are also in agreement with those obtained with the spherical abrasive particle. 29 It is thereby concluded that the contribution of high abrasive particle velocity is significant at ultra-high jet pressures.…”

Section: Propagation Of Stress Wavementioning

confidence: 99%

A numerical and experimental study of oblique impact of ultra-high pressure abrasive water jet

Kang

Liu

et al. 2016

Advances in Mechanical Engineering

View full text Add to dashboard Cite

An investigation of the abrasive water jet with an emphasis on the oblique impact of abrasive particles on the target plate is performed. Ultra-high jet pressure necessitates a close examination of the phenomena featured by small spatial and temporal scales. The effect of oblique impact is assessed from both numerical and practical aspects. Numerical simulation, implemented using the commercial code LS-DYNA, allows a detailed inspection of transient stress wave propagation inside the target plate. And impact experiments facilitate a qualitative description of resultant footprints of oblique water jet. Different incident angles of abrasive particles are adopted and a comparison is thereby unfolded. The results indicate that rebound, embedding, and penetration of single abrasive particle are three representative final operation states. Adjacent to the abrasive particle, the response of the target plate to oblique impact is reflected by von Mises stress distribution and plate deformation as well. Oblique impact arouses non-symmetrical stress wave distributions and distinct unbalanced node displacements at the two sides of the abrasive particle. As for the target plate, global surface morphology is in accordance with predicted effects. The most favorable surface roughness is not associated with vertical impact, and it hinges upon the selection of standoff distance. Furthermore, variation of surface roughness with incident angle is not monotonous.

show abstract

Section: Propagation Of Stress Wavementioning

confidence: 99%

A numerical and experimental study of oblique impact of ultra-high pressure abrasive water jet

Kang

Liu

et al. 2016

Advances in Mechanical Engineering

View full text Add to dashboard Cite

show abstract

“…Abrasive Technology -Characteristics and Applications acceleration processes by conducting impact-force measurements [7]. Lee et al studied the material removal mechanisms of AWJ with micro-sized abrasive particles [9]. Shanmugam and Masood experimentally investigated the effects of AWJ operating parameters on the kerf taper angle of two types of layered composites [10].…”

Section: Introductionmentioning

confidence: 99%

Numerical Analysis of the Liquid-Gas-Solid Three Phase Flow Inside AWJ Nozzle

Long¹,

Liu²

2018

Abrasive Technology - Characteristics and Applications

View full text Add to dashboard Cite

The multiphase flows inside the two abrasive waterjet (AWJ) nozzles with different abrasive inlet tube angles are simulated using the standard k-ε turbulence model based on the Euler-Lagrangian approach. The volume of fluid (VOF) method is employed to simulate the water-air multiphase flows. And, the abrasive particles are treated as dilute dispersed phase and tracked with the discrete particle method (DPM). The results indicate that the abrasive inlet tube angle has little impact on the water-phase flows. Further analysis shows that a larger abrasive inlet tube angle can enhance the particle accelerations. The particle number independence analysis is conducted, and the results indicate that sufficient particles should be tracked in order to obtain statistically representative results. The effects of particle initial velocities, particle shape factors, and the restitution coefficients on the predicted particle movements are further analyzed for the two nozzles with abrasive inlet tube angles of 45° and 60°. The results reveal that at the current velocity range, the particle initial velocities have little impact on the predicted particle velocities. However, both the shape factors and the restitution coefficients play an important role on the calculated particle velocities. The results provide a deeper understanding of particle acceleration performance inside the AWJ nozzles with different abrasive inlet tube angles.

show abstract

“…Design of the effective process of the jet cutting can be carried out using the functional approach. Its essence lies in the differentiation of obtained surface and occurred processes by individual features [8][9][10]. It is known (Fig.…”

Section: Introductionmentioning

confidence: 99%

Applying of the Functional Approach to Obtaining Blind and through Cuts in the Workpieces of Hard and Superhard Sintered Materials by Jet Methods

Salenko

Мана

Shkel

et al. 2015

AMM

View full text Add to dashboard Cite

show abstract

Experiments and computer simulation analysis of impact behaviors of micro-sized abrasive in waterjet cutting of thin multiple layered materials

Cited by 6 publications

References 6 publications

A numerical and experimental study of oblique impact of ultra-high pressure abrasive water jet

A numerical and experimental study of oblique impact of ultra-high pressure abrasive water jet

Numerical Analysis of the Liquid-Gas-Solid Three Phase Flow Inside AWJ Nozzle

Applying of the Functional Approach to Obtaining Blind and through Cuts in the Workpieces of Hard and Superhard Sintered Materials by Jet Methods

Contact Info

Product

Resources

About