Abstract In this study, a modeling approach based on smooth particle hydrodynamics (SPH) was implemented to simulate the nanoscale scratching process using conical tools with different negative rake angles. The model enables study of topography groove profiles, forces, and residual plastic strain beneath groove. An elastoplastic material employed for workpiece, tool–workpiece interaction define...

in this research a new approach is proposed for elasto-plastic analysis of structures with truss elements. this method covers both perfectly plastic and hardening properties. the proposed technique uses substituting virtual loads instead of modifying the stiffness matrix. to solve this kind of problems, complementary programming is utilized. numerical examples demonstrate that elastoplastic ana...

This paper deals with a variational model applicable to small-deformation structural analysis expressed for linearly elastic-perfectly plastic (von Mises-Hubcr-Hencky) material. The model comprises a unification of the minimum complementary energy principal, the Haar-von Karman principle for deformation elastoplasticity, and (in a sense) the lower bound theorem of Limit Analysis. Thus it corres...

background: silicon hydrogel bandage contact lenses are used to enhance epithelial healing, control surface-generated pain, and prevent epithelial erosions after refractive surgery. considering the importance of faster reepithelialization in preventing complications of photorefractive keratectomy (prk) and the fact that the features and specifications of these commercially-available lenses are ...

the effect of geometry and material of the micro/nano particle on contact mechanic for manipulation was studied in this work based on atomic force microscopy. hertz contact model simulation for eph biological micro particle with spherical, cylindrical, and circular crowned roller shape was used to investigate the effect of geometry on contact simulation process in manipulation. then, to validat...

Steel wire ropes are used for numerous industrial applications such as ships, elevators, cranes and bridges. A rope consists of thin, steel wires its geometrical construction can be explained in two steps. First, several wrapped together a helical shape called strand. Second, strands to form the final rope. In most cases, each strand is compacted before they Compaction generally reduces contact...

In this paper, the coupled weakly compressible (WC) and total Lagrangian (TL) smoothed particle hydrodynamics (SPH) model based on open-source multi-physics multi-resolution SPHinXsys library is used to simulate structural deformation failure problem in fluid-structure interaction (FSI). Aiming at that original TLSPH method could not cracks their propagation, fracture established, then verified...