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.

Strength Prediction and Test of FRP Composite Laminates with Central Hole

2011 ◽  
Vol 217-218 ◽  
pp. 1669-1672
Author(s):  
Jian Yu Zhang ◽  
Chong Qiang Sun ◽  
Bin Jun Fei
Keyword(s):  
Composite Laminates ◽  
Failure Process ◽  
Failure Criteria ◽  
Central Hole ◽  
Progressive Damage ◽  
Analysis Tool ◽  
Static Properties ◽  
Element Analysis ◽  
Static Tests ◽  
Frp Composite

In order to research the static properties of FRP composite laminates with central hole, the numerical simulation and experimental method are used. The simulation is achieved by the finite element analysis tool with the progressive damage method. During the simulation, the Hashion failure criteria and the selective completed material degradation models are adopted. Proper specimens of FRP composite laminates with central hole are prepared and the static tests are carried out. The results indicate that progressive damage method can simulate the failure process of FRP laminates with central hole and the simulative results agree well with the experimental data.

scholarly journals Simulating Progressive Damage of Notched Composite Laminates with Various Lamination Schemes

2017 ◽  
Vol 22 (2) ◽  
pp. 333-347 ◽  
Author(s):  
B. Mandal ◽  
A. Chakrabarti
Keyword(s):  
Finite Element ◽  
Composite Laminates ◽  
Constitutive Relations ◽  
Damage Model ◽  
Three Dimensional ◽  
Failure Criteria ◽  
Progressive Damage ◽  
Damage Models ◽  
Matrix Shear ◽  
Three Dimensional Finite Element

AbstractA three dimensional finite element based progressive damage model has been developed for the failure analysis of notched composite laminates. The material constitutive relations and the progressive damage algorithms are implemented into finite element code ABAQUS using user-defined subroutine UMAT. The existing failure criteria for the composite laminates are modified by including the failure criteria for fiber/matrix shear damage and delamination effects. The proposed numerical model is quite efficient and simple compared to other progressive damage models available in the literature. The efficiency of the present constitutive model and the computational scheme is verified by comparing the simulated results with the results available in the literature. A parametric study has been carried out to investigate the effect of change in lamination scheme on the failure behaviour of notched composite laminates.

Mechanical Properties Research of Carbon Fiber Composite Laminates

2020 ◽  
Vol 980 ◽  
pp. 107-116
Author(s):  
Hong Wang Zhao ◽  
Xiao Gang Liu ◽  
Abraham Kent
Keyword(s):  
Mechanical Properties ◽  
Composite Laminates ◽  
Fiber Composite ◽  
Damage Model ◽  
Failure Criteria ◽  
Progressive Damage ◽  
Carbon Fiber Composite ◽  
Element Analysis ◽  
Cfrp Laminates ◽  
Progressive Damage Model

This paper expounds the basic theory of composite mechanics, and discusses the damage forms, damage analysis and failure criteria of composite materials. Then, the basic mechanical properties of unidirectional CFRP laminates with different layers, including modulus of elasticity, strength and so on, were obtained through a large number of experiments. Based on the experimental data, the relationship between the number of layers and the properties of materials was studied. The brittle fracture process of CFRP laminates was simulated by finite element analysis based on progressive damage model and compared with the force-displacement curves obtained by experiments. The validity of progressive damage model was proved.

scholarly journals A progressive damage model of composite laminates under low-velocity impact

2021 ◽  
Vol 39 (1) ◽  
pp. 37-45
Author(s):  
Junjie Zhou ◽  
Shengnan Wang
Keyword(s):  
Composite Laminates ◽  
Impact Force ◽  
Damage Model ◽  
Low Velocity Impact ◽  
Progressive Damage ◽  
Low Velocity ◽  
Damage Development ◽  
Velocity Impact ◽  
Progressive Damage Model ◽  
Matrix Damage

In this paper, a progressive damage model for studying the dynamic mechanical response and damage development of composite laminates under low-velocity impact was established. The model applied the Hashin and Hou failure criteria to predict the initiation of intra-laminar damage (fiber and matrix damage); a linear degradation scheme combined with the equivalent displacement method was adopted to simulate the damage development; a cohesive zone model with the bilinear traction-separation relationship was used to predict delamination. A user material subroutine VUMAT was coded, and the simulation analysis of carbon fiber reinforcement composite laminates subjected to 25 J impact was performed via commercial software ABAQUS. The predicted impact force-time curve, impact force-displacement curve, and damage distribution contours among the layers were in a good agreement with the experimental, which verified the proposed model. According to the simulation results, the fiber damage and matrix damage were analyzed, and the expansion of delamination was discussed.

scholarly journals Coupled Thermal-Mechanical Progressive Damage Model with Strain and Heating Rate Effects for Lightning Strike Damage Assessment

2019 ◽  
Vol 26 (5-6) ◽  
pp. 1437-1459 ◽  
Author(s):  
S. L. J. Millen ◽  
A. Murphy ◽  
G. Catalanotti ◽  
G. Abdelal
Keyword(s):  
Heating Rate ◽  
Thermal Loading ◽  
Damage Model ◽  
Applied Pressure ◽  
Mechanical Damage ◽  
Failure Criteria ◽  
Lightning Strike ◽  
Progressive Damage ◽  
Rate Effects ◽  
Progressive Damage Model

AbstractThis paper proposes a progressive damage model incorporating strain and heating rate effects for the prediction of composite specimen damage resulting from simulated lightning strike test conditions. A mature and robust customised failure model has been developed. The method used a scaling factor approach and non-linear degradation models from published works to modify the material moduli, strength and stiffness properties to reflect the effects of combined strain and thermal loading. Hashin/Puck failure criteria was used prior to progressive damage modelling of the material. Each component of the method was benchmarked against appropriate literature. A three stage modelling framework was demonstrated where an initial plasma model predicts specimen surface loads (electrical, thermal, pressure); a coupled thermal-electric model predicts specimen temperature resulting from the electrical load; and a third, dynamic, coupled temperature-displacement, explicit model predicts the material state due to the thermal load, the resulting thermal-expansion and the lightning plasma applied pressure loading. Unprotected specimen damage results were presented for two SAE lightning test Waveforms (B & A); with the results illustrating how thermal and mechanical damage behaviour varied with waveform duration and peak current.

Analysis and Experiment of Compressive Residual Strength of Composite Laminates with Holes

2014 ◽  
Vol 936 ◽  
pp. 43-52
Author(s):  
Xiang Hong Kong ◽  
Zhi Jin Wang
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Residual Strength ◽  
Composite Laminates ◽  
Failure Criteria ◽  
Fortran Program ◽  
Progressive Damage ◽  
Element Analysis ◽  
Program Segment ◽  
User Subroutine

Experiment and Finite element analysis were used to study the strengths of composite laminates with and without holes. Finite element progressive damage analysis with Tsai-Wu criteria was applied to calculate the compressive residual strength of composite laminate. Abaqus and its user subroutine USDFLD were used for the finite element analysis. Tsai-Wu criteria as the failure criteria was realized in USDFLD as a Fortran program segment, and the stiffness degradation for the damaged elements was also realized by USDFLD. Analytic results gotten by progressive damage method were very close to the experimental results.

Progressive Damage Analysis of Laminated Composites Using Element Free Galerkin Method

2010 ◽  
Vol 123-125 ◽  
pp. 579-582
Author(s):  
Hossein Hosseini-Toudeshky ◽  
F. Mazaheri Torei ◽  
Bijan Mohammadi
Keyword(s):  
Galerkin Method ◽  
Composite Laminates ◽  
Shear Deformation Theory ◽  
Failure Criteria ◽  
Progressive Damage ◽  
Damage Analysis ◽  
Element Free Galerkin Method ◽  
First Order ◽  
Element Free Galerkin ◽  
Element Free

The aim of the present study is evaluation of the element-free Galerkin method (EFGM) in progressive damage analyses of composite laminates. For this purpose, an orthotropic EFGM formulation is employed which is based on the first-order shear deformation theory (FSDT). In progressive damage analysis, the Hashin’s type failure criteria and their degradation rules are used. The obtained damage results from EFGM are compared with the experimental and FEM results.

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