Surface profiling of low-carbon steel with supersonic waterjets

Waterjet penetration simulation by hybrid code of SPH and FEA

“…Fig. 10 indicates the relationship between the kinetic waterjet energy and erosion capability, which was in agreement with the linear relationship that Momber [2] ARTICLE IN PRESS presented:…”

“…In the experiment of literature [2], the target material was the low-carbon steel plate with the dimensions of 150 Â 40 Â 3 mm, and the waterjet with the diameter of 0.3 mm, impacted on the target with three different velocities of 600, 670 and 704 m/s. Considered the large scale of the size of the plate to that of waterjet, the plate thus can be seen as infinite model.…”

“…In order to validate the numerical method, the new model of waterjet and target according to the [2] was created to make a comparison with the result of experiment. The cylindrical drop of waterjet was built using Voronoi cell particles as shown in Fig.…”

“…Some literatures [2][3][4][5][6][7] have executed experimental study on the parameters and the cutting quality, including the profile of the impact surface and the physical properties. Momber et al [2,3] investigated the surface quality features of waterjetted surfaces, involving average surface roughness, Rockwell hardness and surface microstructure. Guo and Ramulu [4] used Moire´interferometry to measure the displacement distribution of the erosion surface.…”

“…The procedure of creating the SPH particle model of waterjet was explained and the jet velocity distribution was supposed as uniform according to [9]. Based on the explicit program LS-Dyna 970, the hybrid-code of SPH and FEA was conducted to simulate the penetration process, and the computational result gave the relationship between the waterjet velocity and the depth of cut and removal mass, also the result was compared with the experimental data of [2].…”