Results 91 to 100 of about 1,443 (188)

A two-dimensional in situ fatigue cohesive zone model for crack propagation in composites under cyclic loading [PDF]

open access: yes, 2016
•Formulate, implement, and validate a new non-Paris-Law-based fatigue CZM.•Provide an efficient cycle jump strategy for high-cycle fatigue simulation.•Demonstrate the fatigue CZM can be calibrated from simple fatigue fracture tests.•Demonstrate the ...
Yang, Q.D, Schesser, D, Nojavan, S
core   +1 more source

Application of a New Cohesive Zone Model in Low Cycle Fatigue [PDF]

open access: yes, 2013
A cohesive zone model (CZM) for material fatigue analysis is presented. This cyclic CZM contains a damage variable and a corresponding damage evolution law.
Vormwald, Michael, Cao, Xuan
core  

A simple cohesive zone model that generates a mode-mixity dependent toughness [PDF]

open access: yes, 2014
A simple, mode-mixity dependent toughness cohesive zone model (MDGc CZM) is described. This phenomenological cohesive zone model has two elements. Mode I energy dissipation is defined by a traction–separation relationship that depends only on normal ...
Reedy, E.D., Emery, J.M.
core   +1 more source

Comparison between a Cohesive Zone Model and a Continuum Damage Model in Predicting Mode-I Fracture Behavior of Adhesively Bonded Joints [PDF]

open access: yes, 2012
In this work, a comparison between a cohesive zone model and a continuum damage model in predicting the mode-I fracture behavior of adhesively bonded joints is performed on the basis of reliability and applicability.
A.S. Koumpias, K.I. Tserpes
core   +1 more source

Numerical Study of Stable Tearing Crack Growth Events Using the Cohesive Zone Model Approach [PDF]

open access: yes, 2013
Numerical analysis of stable tearing crack growth events plays an important role in assessing the structural integrity and residual strength of critical engineering structures.
Chen, Xin
core   +1 more source

Experiment and FEM Modelling of Bond Behaviors between Pre-stressing Strands and Ultra–High–Performance Concrete

open access: yesJournal of Materials and Engineering Structures, 2020
The objective of this paper is to investigate the bond properties of prestressing strands embedded in Ultra–High–Performance Concrete (UHPC).The UHPC was made in laboratory using local materials in Vietnam.Its mixture contains: silica aggregates ...
Duy Hoa PHAM   +6 more
doaj  

A simple method to model crack propagation in concrete [PDF]

open access: yesConstructii: Journal of Civil Engineering Research, 2012
Crack analysis is vital to explain behavior of concrete structures. In the present study, an interface element with softening spring is used to simulate cohesive zone model (CZM) in beam to accurately explain the propagation for mixed-mode crack ...
Shahriar SHABAZPANAHI   +4 more
doaj  

Improvement of a cohesive zone model for fatigue delamination rate simulation [PDF]

open access: yes, 2019
The cohesive zone model (CZM) has found wide acceptance as a tool for the simulation of delamination in composites and debonding in bonded joints and various implementations of the cohesive zone model dedicated to fatigue problems have been proposed in ...
Alessandro Pirondi   +3 more
core   +1 more source

Fatigue crack growth prediction in polymer composites using XFEM cohesive segments

open access: yesAcademia Materials Science
Introduction: Fatigue damage remains a major challenge in the design of composite structures, as cracks may initiate under low stress levels and evolve through multiple interacting failure mechanisms.
Louis Sponton   +2 more
doaj   +1 more source

Frequency-Dependent Cohesive Zone Models for Fatigue [PDF]

open access: yes, 2017
This paper is concerned with a new cohesive zone model (CZM) to better describe the effects of rate and cyclic loading. Rate is known to affect the manner in which cracks propagate in materials, yet there presently exists no rate-dependent cohesive model
Salih, S.   +5 more
core   +1 more source

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