A Cohesive Zone Model to Predict Dynamic Tearing of Rubber

ABSTRACT Tire failures, such as tread separation and sidewall zipper fracture, occur when internal flaws (cracks) nucleate and grow to a critical size as result of fatigue or cyclic loading. Sudden and catastrophic rupture takes place at this critical crack size because the strain energy release rate exceeds the tear energy of the rubber in the tire. The above-mentioned tire failures can lead to loss of vehicle stability and control, and it is important to develop predictive models and computational tools that address this problem. The objective of this article was to develop a cohesive zone model for rubber to numerically predict crack growth in a rubber component under dynamic tearing. The cohesive zone model for rubber was embedded into the material constitutive equation via a user-defined material subroutine (VUMAT) of ABAQUS. It consisted of three parts: (1) hyperviscoelastic behavior before damage, (2) damage initiation based on the critical strain energy density, and (3) hyperviscoelastic behavior after damage initiation. Crack growth in the tensile strip and pure shear specimens was simulated in ABAQUS Explicit, and good agreement was reported between finite element analysis predictions and test results.

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Micro-mechanical modelling of low temperature-induced micro-damage initiation in asphalt concrete based on cohesive zone model

Construction and Building Materials ◽

10.1016/j.conbuildmat.2021.122971 ◽

2021 ◽

Vol 286 ◽

pp. 122971

Author(s):

Abiy Bekele ◽

Romain Balieu ◽

Denis Jelagin ◽

Nils Ryden ◽

Anders Gudmarsson

Keyword(s):

Low Temperature ◽

Asphalt Concrete ◽

Cohesive Zone ◽

Cohesive Zone Model ◽

Zone Model ◽

Damage Initiation ◽

Mechanical Modelling

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Numerical investigation on fatigue crack growth of fracturing pump head using cohesive zone model

Theoretical and Applied Fracture Mechanics ◽

10.1016/j.tafmec.2020.102564 ◽

2020 ◽

Vol 107 ◽

pp. 102564 ◽

Cited By ~ 1

Author(s):

Chao Wei ◽

Sizhu Zhou ◽

Meiqiu Li ◽

Si Zhang

Keyword(s):

Fatigue Crack ◽

Fatigue Crack Growth ◽

Numerical Investigation ◽

Crack Growth ◽

Cohesive Zone ◽

Cohesive Zone Model ◽

Zone Model ◽

Pump Head

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Damage initiation and fracture analysis of honeycomb core single cantilever beam sandwich specimens

Journal of Sandwich Structures & Materials ◽

10.1177/1099636220909820 ◽

2020 ◽

pp. 109963622090982 ◽

Cited By ~ 1

Author(s):

Vishnu Saseendran ◽

Pirashandan Varatharaj ◽

Shenal Perera ◽

Waruna Seneviratne

Keyword(s):

Cantilever Beam ◽

Cohesive Zone ◽

Cohesive Zone Model ◽

Element Model ◽

Interface Fracture ◽

Zone Model ◽

Honeycomb Core ◽

Damage Initiation ◽

Foundation Model ◽

Honeycomb Cell

Fracture testing and analysis of aerospace grade honeycomb core sandwich constructions using a single cantilever beam test methodology is presented here. Influence of various parameters such as facesheet thickness, core density, honeycomb cell-size, and core thickness were studied. A Winkler-based foundation model was used to calculate compliance and energy-release rate, and further compare with finite element model and experiments. A cohesive zone model was developed to predict the disbond initiation and simulate the interface crack propagation in the single cantilever beam sandwich specimen. The mode I interface fracture toughness obtained from the translating base single cantilever beam setup was provided as input in this cohesive zone model. It is shown that the presented cohesive zone approach is robust, and is able to capture the debonding phenomenon for majority of the honeycomb core specimens.

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Thermo-Mechanical Analysis of Mixed-Mode Damage: Cohesive Zone Modeling

Volume 8: 27th Conference on Mechanical Vibration and Noise ◽

10.1115/detc2015-46057 ◽

2015 ◽

Author(s):

Hussain Altammar ◽

Sudhir Kaul ◽

Anoop Dhingra

Keyword(s):

Cohesive Zone ◽

Composite Beam ◽

Mixed Mode ◽

Cohesive Zone Model ◽

Mechanical Load ◽

Element Model ◽

Mechanical Analysis ◽

Cohesive Zone Modeling ◽

Zone Model ◽

Damage Initiation

Damage detection and diagnostics is a key area of research in structural analysis. This paper presents results from the analysis of mixed-mode damage initiation in a composite beam under thermal and mechanical loads. A finite element model in conjunction with a cohesive zone model (CZM) is used in order to determine the location of joint separation as well as the contribution of each mode in damage (debonding) initiation. The composite beam is modeled by using two layers of aluminum that are bonded together through a layer of adhesive. Simulation results show that the model can successfully detect the location of damage under a thermo-mechanical load. The model can also be used to determine the severity of damage due to a thermal load, a mechanical load and a thermo-mechanical load. It is observed that integrating thermal analysis has a significant influence on the fracture energy.

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