Simulation of a large number of deformable bodies is often difficult because complex high-level modeling is required to address both multi-body contact and viscoelastic deformation. This necessitates the combined use of a discrete element method (DEM) and a finite element method (FEM). In this study, a quadruple discrete element method (QDEM) was developed for dynamic analysis of viscoelastic m...

Existing studies on the dynamic characteristics of planetary gearboxes are generally based traditional modeling methods. The models were idealized because various uncertain factors that affect gearbox. influence non-mechanical components, such as driving motors, analysis, is often ignored. Digital twin technology can not only simulate data physical entities to realize real-time state evaluation...

A ball cage flexible drill pipe is a new type of ultra-short-radius drilling tool, which consists multiple joints hinged together. During the process, members will come into contact and wear, reduces efficiency load transfer. The multi-body collision dynamics model was proposed to study performance pipe. method considered influence borehole curvature. kinematic equations were established. Lanka...