An efficient physically-based damage model for interface damage of composites sleeved interference joint and influence analysis of its interface friction

2021 ◽  
pp. 114425
Author(s):  
Guanhua Xu ◽  
Kaifu Zhang ◽  
Hui Cheng ◽  
Bin Luo ◽  
Peng Zou ◽  
...  
Keyword(s):  
Damage Model ◽  
Interface Friction ◽  
Influence Analysis ◽  
Interface Damage ◽  
Physically Based

Modelling of the damage development in carbon/epoxy laminates subjected to combined seawater ageing and mechanical loading

2016 ◽  
Vol 232 (9) ◽  
pp. 761-768 ◽  
Author(s):  
N Carrere ◽  
N Tual ◽  
T Bonnemains ◽  
E Lolive ◽  
P Davies
Keyword(s):  
Applied Load ◽  
Epoxy Composite ◽  
Damage Model ◽  
Crack Density ◽  
Damage Threshold ◽  
Multiscale Approach ◽  
Damage Development ◽  
Finite Fracture Mechanics ◽  
Physically Based ◽  
Kinetics Of

In this study, a damage model that accounts for the effect of seawater ageing is proposed. The model is based on a failure criterion that takes into account the effect of the ply thickness, while the kinetics of the damage development are based on a Finite Fracture Mechanics approach. The stiffness degradation is identified by a multiscale approach. The parameters of the model are physically based which facilitates the identification and the coupling with the ageing. These and their evolution as a function of the time of immersion in seawater have been identified for a carbon/epoxy composite. The changes in crack density as a function of the applied load for three ageing times are quite well predicted by the model. The model explains why the damage threshold is strongly influenced by the ageing while the kinetics of the crack propagation remain quasi-constant.

scholarly journals An interface damage model accounting for in-plane effects

2014 ◽  
Vol 51 (25-26) ◽  
pp. 4230-4244 ◽  
Author(s):  
Francesco Freddi ◽  
Elio Sacco
Keyword(s):  
Damage Model ◽  
Interface Damage

Modeling of Damage Evolution During Ion Implantation Into Silicon: A Monte Carlo Approach

1996 ◽  
Vol 439 ◽  
Author(s):  
S. Tian ◽  
M. Morris ◽  
S. J. Morris ◽  
B. Obradovic ◽  
A. F. Tasch
Keyword(s):  
Ion Implantation ◽  
Damage Evolution ◽  
Damage Model ◽  
Amorphous Layer ◽  
High Dose ◽  
Defect Production ◽  
Implantation Damage ◽  
Wide Range ◽  
Physically Based ◽  
First Time

AbstractWe present for the first time a physically based ion implantation damage model which successfully predicts both the as-implanted impurity range profiles and the damage profiles for a wide range of implant conditions for arsenic, boron, phosphorus, and BF2 implants into single-crystal (100) silicon. In addition, the amorphous layer thicknesses predicted by this damage model for high dose implants are also generally in excellent agreement with experiments. This damage model explicitly simulates the defect production and its subsequent evolution into the experimentally observable profiles for the first time. The microscopic mechanisms for damage evolution are further discussed.

An Influence of Cyclic Loading on Behaviour of a Hysteretic Interface Damage Model

2019 ◽  
Vol 827 ◽  
pp. 275-281
Author(s):  
Roman Vodička
Keyword(s):  
Cyclic Loading ◽  
Cyclic Load ◽  
Endurance Limit ◽  
Damage Model ◽  
Interface Layer ◽  
Actual State ◽  
Cyclic Loads ◽  
Inertial Effects ◽  
Damage Propagation ◽  
Interface Damage

A computational interface damage model which takes into account crack initiation andgrowth along connections between parts of a multi-domain structure is proposed and is exposed tosituations where cyclic loading and its effects on the structure are noticeable, though the inertial effects are not considered. Modelling of damage takes into account various aspects of damage propagation and invoking of an interface crack. First, the degradation function of the interface layer controls the stressseparation relation on damage evolution. Second, the instant of triggering and cessation of damage propagation may in situations of cyclic loads depend on the actual state of the structure, influencing thus its endurance limit. Finally, the hysteretic character of damage provides together with loadingunloading conditions a fatigue-like character, where the crack appears for smaller magnitude of the cyclic load than for pure uploading. The numerical solution and a short parametric study is provided for a simplified situation of single damageable interface spring.

scholarly journals An orthotropic interface damage model for simulating drying processes in soils

2017 ◽  
Vol 13 (5) ◽  
pp. 1171-1186 ◽  
Author(s):  
Osvaldo Manzoli ◽  
Marcelo Sánchez ◽  
Michael Maedo ◽  
Jumanah Hajjat ◽  
Leonardo J. N. Guimarães
Keyword(s):  
Damage Model ◽  
Interface Damage

Development of Unified Viscoplastic-Damage Model for Crashworthiness Analysis of Boron Steel Safety Components with Tailored Microstructures

2015 ◽  
Vol 784 ◽  
pp. 427-434 ◽  
Author(s):  
Nan Li ◽  
Jian Guo Lin ◽  
Trevor A. Dean
Keyword(s):  
Volume Fraction ◽  
Damage Model ◽  
Tensile Tests ◽  
Boron Steel ◽  
Test Results ◽  
Physically Based ◽  
Static Tensile ◽  
Damage Constitutive Model ◽  
Steel Panels ◽  
Crashworthiness Analysis

Hot stamped boron steel panels with tailored properties are popular as car safety components for maximised energy absorption. In this study, dynamic and quasi-static tensile tests (strain rate: 0.001/s – 500/s) combined with microstructural observation were carried out to study the mechanical properties of press hardened boron steel with various microstructures (martensite volume fraction: 0 – 100%) at room temperature. Based on the test results, a physically-based unified viscoplastic-damage constitutive model has been developed and determined, which takes the volume fraction of martensite into account. Thus the crashworthiness and failure mode of boron steel parts having graded microstructure distributions can be described through a single set of equations.

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