Showing papers by "Liangchi Zhang published in 2023"
TL;DR: In this paper , a systematic investigation on the effects of aggregate size and volume fraction on concrete fracture and mechanical behaviors by means of discrete element modeling (DEM) is presented. And the results of this study will subsequently navigate the design of fracture-resistant concrete materials.
2 citations
TL;DR: In this article , a stochastic model was developed to take into account the random nature of the abrasive grain size and their distribution in a grinding wheel, and hence to predict grinding forces more accurately.
1 citations
TL;DR: In this paper , the authors explored the tribological behavior and subsurface mechanical properties of SLMed IN718 superalloy with the aid of nanomechanical and structural characterization techniques.
1 citations
TL;DR: In this paper , the deformation mechanisms of SiC subjected to single-point cutting are investigated by carrying out experimental investigations at similar length and load scales to those based on molecular dynamics, and it is shown that under nano-scratching, the main mechanism of material removal of a single crystalline SiC is via amorphous phase transformation.
TL;DR: In this paper , the authors presented the first observation of the amorphization of KDP in the subsurface after nanoindentation on KDP under transmission electron microscopy (TEM).
Abstract: As a key material in an inertial confinement fusion system, potassium dihydrogen phosphate (KDP) and its component manufactured must possess extremely high surface and subsurface quality. In this letter, we present our first observation of the amorphization of KDP in the subsurface after nanoindentation on KDP under transmission electron microscopy (TEM). The results are in good agreement with our Molecular Dynamics (MD) simulation predictions. The findings provide an understanding of the deformation mechanisms of KDP under nanoindentation, and offer a sensitive approach to observing electron beam sensitive materials under TEM.
TL;DR: In this paper , the authors investigated the blunting rate and mechanism of AFM tips and found that the maximum contact stress was in the range of 0.7 to 1.0 GPa when a silicon AFM tip was tapped on a PMMA thin-film surface.
TL;DR: In this paper , an effective mechanism model was developed to investigate the wear at the bearing surfaces of a hip joint prosthesis under the three-dimensional motion and loading conditions under patient's walking activities.
TL;DR: In this article , the effect of processing temperature on the deformation of 6H-SiC during nanoscratching was investigated across a wide range of temperature variations, from 1 K to 900 K.
TL;DR: In this paper , the applicability of WC molds with coatings of Ta-C, AlCrN, and AlTiN was investigated respectively considering their thermodynamic properties and surface energy characteristics.
TL;DR: In this paper , the wear mechanisms and subsurface deformation behavior of CoCrFeMnNi at subzero temperatures down to −50 °C with the aid of contact sliding on a tribometer using tungsten carbide balls of 6.5 mm in diameter.
TL;DR: In this paper , an additive manufacturing process based on the selective laser melting (SLM) mechanism was used to construct an eutectic Al-12Si (wt.%) alloy by using an additive additive manufacturing method and compared the structure, tribological behavior, worn subsurface morphologies and mechanical properties with the conventionally casted eutective Al-Si alloy.
TL;DR: In this article , the authors developed a numerical strategy for predicting the interface stresses in metal strip rolling at a small reduction by considering the elastoplastic deformations of surface asperities.