The extrusion process of the belt is a in which and inner bore barrel undergo complex contact collision, rifling gradually penetrates belt, so that material continues to fail destroy. It has high instantaneous, strong impact, temperature, high-speed change. There big gap between existing theory actual process, it urgent carry out research work on this problem. This paper analyzes basic characte...

Classical calibration procedures for phenomenological thermo-elasto-viscoplastic constitutive models usually involve a large number of tests to identify all the material parameters, leading long experimental campaigns. In present work, novel methodology that takes full advantage full-field measurements heterogeneous test is proposed. It relies on an innovative combination Virtual Fields Method ...

STEERING COMMITTEE ON PRACTICE GUIDELINES John S. McIntyre, M.D., Chair Sara C. Charles, M.D., Vice-Chair Daniel J. Anzia, M.D. Ian A. Cook, M.D. Molly T. Finnerty, M.D. Bradley R. Johnson, M.D. James E. Nininger, M.D. Barbara Schneidman, M.D. Paul Summergrad, M.D. Sherwyn M. Woods, M.D., Ph.D. Anthony J. Carino, M.D. (fellow) Zachary Z. Freyberg, M.D., Ph.D. (fellow) Sheila Hafter Gray, M.D. (...

This paper deals with modelling of the orthogonal machining process using tools with different geometries. The finite element method (FEM) is used for a simulation based on the Lagrangian formulation including ANSYS/LS-DYNA software. The constitutive Johnson – Cook material model regarding strain, strain rate and temperature to predict material plasticity and chip separation is used. Chip morph...

This study is the first part of a project that aims to assess and model impact-induced energy release (IIER). The present work investigates failure mode brittle commercial pyrophoric alloy samples during Taylor impact tests. A series ferrocerium specimens were shot against tungsten carbide anvils, with velocities ranging between 60 140 m/s. Total Lagrangian SPH was employed simulate deformation...

In order to investigate the characteristics of elliptical ultrasonic vibration cutting TiC particle-reinforced titanium matrix composites, a two-dimensional thermodynamic coupled finite element model was established based on Johnson-Cook intrinsic structure using ABAQUS simulation software, and changes in force, temperature, machined surface shape, particle fragmentation were obtained under tra...