A cohesive element model for mixed mode loading with frictional contact capability

A framework based on a complex dynamical system viewpoint for formulating and solving dynamic ice-structure interaction problems is introduced. Important constituents required for formulating a well posed initial-boundary value problem are discussed. Significance of these constituents is illustrated using a Cohesive Element model of several example problems.

Download Full-text

Finite Element Model of Crack Growth under Mixed Mode Loading

International Journal of Materials Engineering ◽

10.5923/j.ijme.20120205.02 ◽

2012 ◽

Vol 2 (5) ◽

pp. 67-74

Author(s):

Souiyah Miloud ◽

A. Muchtar ◽

A. K. Ariffin ◽

Malek Ali ◽

M. I. Fadhel ◽

...

Keyword(s):

Finite Element ◽

Finite Element Model ◽

Crack Growth ◽

Mixed Mode ◽

Element Model ◽

Mixed Mode Loading

Download Full-text

FINITE ELEMENT SIMULATION OF ELASTIC AND QUASI – STATIC CRACK PROPAGATION UNDER MIXED MODE LOADING CONDITIONS

The International Conference on Applied Mechanics and Mechanical Engineering ◽

10.21608/amme.2016.35385 ◽

2016 ◽

Vol 17 (17) ◽

pp. 1-15

Author(s):

S. Yossif

Keyword(s):

Finite Element ◽

Crack Propagation ◽

Finite Element Simulation ◽

Mixed Mode ◽

Loading Conditions ◽

Mixed Mode Loading ◽

Static Crack ◽

Element Simulation

Download Full-text

Discrete element model for general polyhedra

Computational Particle Mechanics ◽

10.1007/s40571-021-00415-z ◽

2021 ◽

Author(s):

Alfredo Gay Neto ◽

Peter Wriggers

Keyword(s):

Frictional Contact ◽

Virtual Work ◽

Particle Surface ◽

Element Model ◽

Discrete Element ◽

Discrete Element Model ◽

Principle Of Virtual Work ◽

Dynamics Model ◽

Railway Ballast ◽

Multibody Dynamics Model

AbstractWe present a version of the Discrete Element Method considering the particles as rigid polyhedra. The Principle of Virtual Work is employed as basis for a multibody dynamics model. Each particle surface is split into sub-regions, which are tracked for contact with other sub-regions of neighboring particles. Contact interactions are modeled pointwise, considering vertex-face, edge-edge, vertex-edge and vertex-vertex interactions. General polyhedra with triangular faces are considered as particles, permitting multiple pointwise interactions which are automatically detected along the model evolution. We propose a combined interface law composed of a penalty and a barrier approach, to fulfill the contact constraints. Numerical examples demonstrate that the model can handle normal and frictional contact effects in a robust manner. These include simulations of convex and non-convex particles, showing the potential of applicability to materials with complex shaped particles such as sand and railway ballast.

Download Full-text

Selected Aspects of Cohesive Zone Modeling in Fracture Mechanics

Metals ◽

10.3390/met11020302 ◽

2021 ◽

Vol 11 (2) ◽

pp. 302

Author(s):

Wiktor Wciślik ◽

Tadeusz Pała

Keyword(s):

Cohesive Zone ◽

Mixed Mode ◽

Review Paper ◽

Failure Process ◽

Cohesive Zone Modeling ◽

Mixed Mode Loading ◽

Cohesive Models ◽

Cohesive Modeling ◽

Zone Modeling ◽

Intensive Development

This review paper discusses the basic problems related to the use of cohesive models to simulate the initiation and development of failure in various types of engineering issues. The most commonly used cohesive zone models (CZMs) are described. Recent achievements in the field of cohesive modeling are characterized, with particular emphasis on the problem of mixed mode loading, the influence of the strain rate, the stress state triaxiality, and fatigue. A separate chapter of the work is devoted to the identification of cohesive parameters. Examples of the use of CZMs for the analysis of the fracture and failure process in various applications, both on the macro and microscopic scale, are given. The directions of CZMs development were indicated as well as the issues that are currently under particularly intensive development.

Download Full-text