Progressive Damage Analysis of Full-Wrapped Composite Gas Cylinder Under Overload Condition and Prediction of Its Bursting Pressure

2015 ◽  
Author(s):  
Zewu Wang ◽  
Guojing Zhang ◽  
Peiqi Liu ◽  
Liangzhi Xia
Keyword(s):  
Numerical Model ◽  
Failure Process ◽  
Damage Model ◽  
Three Dimensional ◽  
High Strength ◽  
Reduction Factor ◽  
Bursting Pressure ◽  
Progressive Damage ◽  
Gas Cylinder ◽  
Damage Process

Fiber is widely used as a reinforcing material on the gas cylinder owing to good stiffness-to-weight and designability as well as high strength. However, it is difficult to analyze the failure process of a full-wrapped composite gas cylinder because of the anisotropy of composite material and complexity of a full-wrapped geometric structure. In this study, the three dimensional (3D) numerical model of a full-wrapped gas cylinder was first developed and used for calculating its stress distribution. And then the Hashin failure mode and reduction factor of elastic modulus were integrated into the numerical model by using a user subroutine. Lastly, the progressive damage process of the gas cylinder was analyzed in detail under overload conditions. The results indicated that the proposed progressive damage model could not only reproduce the damage process of the full-wrapped gas cylinder, but also predict the critical bursting pressure. This work will in the future help to guide the calculation of load-carrying capacity and failure analysis of the composite gas cylinder.

Numerical model for composite patch repair of notched aluminum plates under impact loading

2021 ◽  
pp. 146442072098337
Author(s):  
Umut Caliskan ◽  
Recep Ekici ◽  
Ayse Yildiz Bayazit ◽  
M Kemal Apalak
Keyword(s):  
Finite Element ◽  
Numerical Model ◽  
Composite Structures ◽  
Impact Damage ◽  
Damage Model ◽  
Three Dimensional ◽  
Patch Repair ◽  
Progressive Damage ◽  
Damage Models ◽  
Composite Patch

The damaged area for various structures can be effectively repaired using composite materials. With the effect of impact, damage can occur that cannot be clearly seen in the inner structure of a laminated composite. This can cause delamination and other damage modes in layered composite structures. In this study, three-dimensional dynamic progressive damage analysis was performed in adhesively bonded composite patch-repaired metal notched plates under impact loads to investigate the effect of external composite patch material and thickness. Three-dimensional Hashin damage models were used for the progressive damage model. A user-defined subroutine, VUMAT was written to transfer the damage models to finite element code. By writing a separate script in Python language that relates to the damage models, the weakness in the laminate of the composite patch was transferred to the finite element model with a different degradation model proposed. It was found that plastic deformations occurring after impact damage in the notched metal plates was prevented by the use of composite patches. While glass and carbon fiber exhibit similar behavior at lower impact velocities, the progress of damage is prevented by increasing patch thickness. These behaviors were confirmed by the numerical model and showed an advanced agreement with experimental results.

A progressive damage model for three-dimensional woven composites under ballistic impact loading

2019 ◽  
Vol 1 (1) ◽  
pp. 015028
Author(s):  
Yongqi Yang ◽  
Li Zhang ◽  
Licheng Guo ◽  
Suyang Zhong ◽  
Jiuzhou Zhao ◽  
...  
Keyword(s):  
Impact Loading ◽  
Damage Model ◽  
Three Dimensional ◽  
Ballistic Impact ◽  
Woven Composites ◽  
Progressive Damage ◽  
Progressive Damage Model

Mechanism-Based Energy Regularization in Computational Modeling of Quasibrittle Fracture

2020 ◽  
Vol 87 (9) ◽  
Author(s):  
Anna Gorgogianni ◽  
Jan Eliáš ◽  
Jia-Liang Le
Keyword(s):  
Failure Process ◽  
Damage Model ◽  
Constitutive Law ◽  
Quasibrittle Fracture ◽  
Damage Pattern ◽  
Rate Dependent ◽  
Mesh Sensitivity ◽  
Fe Simulations ◽  
Damage Process ◽  
Localized Damage

Abstract Quasibrittle materials are featured by a strain-softening constitutive behavior under many loading scenarios, which could eventually lead to localization instability. It has long been known that strain localization would result in spurious mesh sensitivity in finite element (FE) simulations. Previous studies have shown that, for the case of fully localized damage, the mesh sensitivity can be mitigated through energy regularization of the material constitutive law. However, depending on the loading configuration and structural geometry, quasibrittle structures could exhibit a complex damage process, which involves both localized and diffused damage patterns at different stages of loading. This study presents a generalized energy regularization method that considers the spatial and temporal evolution of damage pattern. The method introduces a localization parameter, which describes the local damage pattern. The localization parameter governs the energy regularization of the constitutive model, which captures the transition from diffused to localized damage during the failure process. The method is cast into an isotropic damage model, and is further extended to rate-dependent behavior. The energy regularization scheme is directly incorporated into the kinetics of damage growth. The model is applied to simulate static and dynamic failures of ceramic specimens. It is shown that the present model is able to effectively mitigate the spurious mesh sensitivity in FE simulations of both types of failure. The present analysis demonstrates the essential role of mechanism-based energy regularization of constitutive relation in FE simulations of quasibrittle fracture.

Micromechanical Modeling of Damage Development in Polymer Composites

2016 ◽  
Vol 25 (3) ◽  
pp. 096369351602500 ◽  
Author(s):  
T. Arabatti ◽  
N. K. Parambil ◽  
S. Gururaja
Keyword(s):  
Polymer Composites ◽  
Damage Model ◽  
Three Dimensional ◽  
Single Fibre ◽  
Micromechanical Modeling ◽  
Interface Debonding ◽  
Progressive Damage ◽  
Damage Development ◽  
Damage Initiation ◽  
Fibre Breakage

Damage initiation and progression in long fibre unidirectional continuous polymer composites has been studied at the micro-scale considering a three dimensional repeating unit cell (3D-RUC) with square packing consisting of a single fibre in a polymer matrix. Three damage modes under static loading have been looked at, viz., matrix damage, fibre failure and fibre-matrix debonding. A progressive damage model for the matrix, fibre breakage model using maximum stress failure criterion and interface debonding using a traction-separation criterion via cohesive zone modelling (CZM) approach has been implemented. Homogenization of the said 3D-RUC has been conducted for various load cases that describes the averaged response of the microstructure under combined progressive damage modes.

A three-dimensional progressive damage model for drop-weight impact and compression after impact

2019 ◽  
Vol 54 (4) ◽  
pp. 449-462 ◽  
Author(s):  
Dinh Chi Pham ◽  
Jim Lua ◽  
Haotian Sun ◽  
Dianyun Zhang
Keyword(s):  
Impact Analysis ◽  
Damage Model ◽  
Three Dimensional ◽  
Matrix Cracking ◽  
Progressive Damage ◽  
Continuum Damage ◽  
Drop Weight ◽  
Compression After Impact ◽  
Weight Impact ◽  
Progressive Damage Model

In this paper, an enhanced three-dimensional continuum damage mechanics model is applied to predict the drop-weight impact response and compression after impact failure of a fiber-reinforced polymer composite specimen. The three-dimensional progressive damage model incorporates a three-dimensional maximum stress criterion to predict the intra-ply damage initiation, followed by a fracture-energy-based smeared crack model to capture the post-peak softening behavior. Driven by the dominant through-the-thickness failure under impact loading, a three-dimensional continuum damage model is implemented for the three-dimensional solid element via its explicit material model for Abaqus (VUMAT) to capture the effect of three-dimensional stress state and the interaction of matrix cracking and delamination. Abaqus’ restart analysis capability is used to activate the compression after impact analysis using the final damage state from the dynamic impact analysis. Both the dynamic failure and the compression after impact are demonstrated via a suite of verification examples followed by the sensitivity analysis using distinct impact configurations. The predictive capability of the proposed three-dimensional damage model is first verified using a static open-hole tension test. Applications of the damage model are then demonstrated for simulations of the dynamic drop-weight tests and compression after impact tests. A comparative study on the developed method is performed using the results predicted from the open-source CompDam. A sensitivity study is also performed to demonstrate the impact energy-dependent failure mode. The proposed model has shown its advantages in performing a quick assessment of impact damage and its effects on the residual compressive strength.

scholarly journals The Progressive Failure Analysis of Uni-Directional Fibre Reinforced Composite Laminates

2020 ◽  
Vol 36 (2) ◽  
pp. 159-166
Author(s):  
T. Yi
Keyword(s):  
Composite Laminates ◽  
Progressive Failure ◽  
Failure Process ◽  
Damage Model ◽  
Three Dimensional ◽  
Dissipated Energy ◽  
Solid Element ◽  
Reinforced Composite ◽  
Shear Rupture ◽  
Composite Solid

ABSTRACTThe three dimensional standard damage model developed by Lavedeze et.al [9, 13] for uni-directional fibre reinforced ply is implemented into the nonlinear solution of NX Nastran within composite solid element to analyze the progressive damage process and ultimate failure of fibre reinforced composite laminates. This ply level meso-damage-constitutive-model takes into account main damage mechanisms including fibre breaking, matrix transverse cracking, and fibre/matrix de-bonding; also considers contributions like plasticity coupling, damage delay effects, and elastic nonlinearity in fibre compression. Dissipated energy and damage status are also introduced to reflect the damage condition on the macrostructural-level. Using the implemented code, simulation is carried out on the uniaxial tension of a [±45]2s laminate with IM6/914 material, wherein the predicted ply shear rupture stress matches the experimental results very well and better than the theoretical predictions in literature. Moreover, a [-45/0/45/90] holed laminate loaded in tension is simulated to show the complex behavior of subcritical damage evolution and failure process in the composite structure. The composite solid element with damage model supported in NX Nastran is shown to be a reliable tool to analyze the progressive failure of uni-directional fibre reinforced composite laminates.

Component Seismic Damage Model for SRHSHPC Joints

2009 ◽  
Vol 417-418 ◽  
pp. 705-708
Author(s):  
Shan Suo Zheng ◽  
Bin Wang ◽  
Lei Li ◽  
Wei Wang ◽  
Jin Chuan He
Keyword(s):  
High Performance ◽  
High Performance Concrete ◽  
Damage Model ◽  
High Strength ◽  
Seismic Damage ◽  
Reduction Factor ◽  
Damage Analysis ◽  
Ultimate Deformation ◽  
Number Of Cycles ◽  
Relationship Of

The deficiency of present damage model is generalized by studying existing references. The mechanical properties of steel reinforced high strength and high performance concrete (SRHSHPC) members under monotonic loading, including the capacity of ultimate deformation, strength, stiffness, etc. are analyzed after the different number of cycles. The reduction factor is introduced, the dynamic variation relationship of ultimate deformation with the number of cycles is obtained, and the merits of existing damage model are utilized, finally the seismic damage model, which is suitable for SRHSHPC beam-column joints, is established. In order to verify the rationality of damage model, Opensees as a nonlinear analysis program is adopted to simulate SRHSHPC joints, the comparison of the numerical analysis results with experimental results shows that the proposed damage model can capture the behaviors of joints very well. The model can, therefore, be used to carry out seismic damage analysis of other SRHSHPC members.

Progressive Damage Model of FRP Composite Laminates with Central Hole

2011 ◽  
Vol 194-196 ◽  
pp. 1581-1585
Author(s):  
Chong Qiang Sun ◽  
Jian Yu Zhang ◽  
Bin Jun Fei
Keyword(s):  
Composite Laminates ◽  
Failure Process ◽  
Damage Model ◽  
Failure Criteria ◽  
Numerical Results ◽  
Central Hole ◽  
Progressive Damage ◽  
Element Mesh ◽  
Damage Models ◽  
Frp Composite

Progressive damage method is adopted to predict the static mechanics properties of FRP composite laminates with central hole. Progressive damage models with three different 3D failure criteria and material degradation models are established and analyzed via a user defined subroutine embedded into the general FEA package. Numerical results indicate that all the three 3D failure criteria can simulate the failure process of FRP laminates with central hole, but the final failure load is different. Degradation coefficient and the finite element mesh have significant effect on the numerical results.

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