Non-linear material characterization and numerical modeling of cross-ply basalt/epoxy laminate under low velocity impact

2020 ◽  
Vol 84 ◽  
pp. 106349 ◽  
Author(s):  
Mohit Gupta ◽  
R.T. Durai Prabhakaran ◽  
Puneet Mahajan
Keyword(s):  
Numerical Modeling ◽  
Material Characterization ◽  
Low Velocity Impact ◽  
Low Velocity ◽  
Velocity Impact ◽  
Non Linear ◽  
Linear Material

Experimental and Numerical Investigation of Response of Sandwich Composite Beam Subjected to Low-Velocity Impact

2015 ◽  
Vol 732 ◽  
pp. 239-246 ◽  
Author(s):  
Tomáš Mandys ◽  
Vladislav Laš ◽  
Tomáš Kroupa ◽  
Robert Zemčík
Keyword(s):  
Composite Beam ◽  
Progressive Failure ◽  
Material Model ◽  
Low Velocity Impact ◽  
Elastic Behavior ◽  
Sandwich Composite ◽  
Low Velocity ◽  
Velocity Impact ◽  
Non Linear ◽  
Force Time

This paper deals with the progressive failure analysis of sandwich composite beam loaded with transversely low-velocity impact. A user defined material model was used for modeling of the non-linear orthotropic elastic behavior of composite skin. The non-linear behavior of foam core was modeled using Low-Density Foam material model. The numerical model was validated using performed experiment and the results in terms of deflection and contact force time dependencies are mutually compared.

Damage characteristics in laminated composite structures subjected to low-velocity impact

2019 ◽  
Vol 11 (5) ◽  
pp. 670-685 ◽  
Author(s):  
Konstantinos Stamoulis ◽  
Stelios K. Georgantzinos ◽  
G.I. Giannopoulos
Keyword(s):  
Numerical Modeling ◽  
Impact Damage ◽  
Laminated Composites ◽  
Time Response ◽  
Low Velocity Impact ◽  
Low Velocity ◽  
Content Type ◽  
Velocity Impact ◽  
Damage Characteristics ◽  
Force Time

Purpose The present study deals with the numerical modeling of the low-velocity impact damage of laminated composites which have increasingly important applications in aerospace primary structures. Such damage, generated by various sources during ground handling, substantially reduces the mechanical residual performance and the safe-service life. The purpose of this paper is to present and validate a computationally efficient approach in order to explore the effect of critical parameters on the impact damage characteristics. Design/methodology/approach Numerical modeling is considered as one of the most efficient tool as compared to the expensive and time-consuming experimental testing. In this paper, a finite element model based on explicit dynamics formulations is adopted. Hashin criterion is applied to predict the intralaminar damage initiation and evolution. The numerical analysis is performed using the ABAQUS® programme. Findings The employed modeling approach is validated using corresponding numerical data found in the literature and the presented results show a reasonable correlation to the available literature data. It is demonstrated that the current model can be used to capture the force-time response as well as damage parameter maps showing the intralaminar damage evolution for different impact cases with respect to the physical boundary conditions and a range of impact energies. Originality/value Low-velocity impact damage of laminated composites is still not well understood due to the complexity and non-linearity of the damage zone. The presented model is used to predict the force-time response which is considered as one of the most important parameters influencing the structural integrity. Furthermore, it is used for capturing the damage shape evolution, exhibiting a high degree of capability as a damage assessment computational tool.

Numerical modeling of the low-velocity impact of composite plates using a shell-based SPH method

Meccanica ◽  
2015 ◽  
Vol 50 (10) ◽  
pp. 2649-2660 ◽  
Author(s):  
J. Lin ◽  
H. Naceur ◽  
D. Coutellier ◽  
S. Abrate
Keyword(s):  
Numerical Modeling ◽  
Composite Plates ◽  
Low Velocity Impact ◽  
Low Velocity ◽  
Sph Method ◽  
Velocity Impact

Effects of the impactor geometrical shape on the non-linear low-velocity impact response of sandwich plate with CNTRC face sheets

2018 ◽  
Vol 22 (4) ◽  
pp. 962-990 ◽  
Author(s):  
A Khalkhali ◽  
N Geran Malek ◽  
M Bozorgi Nejad
Keyword(s):  
Contact Force ◽  
Sandwich Plate ◽  
Impact Response ◽  
Low Velocity Impact ◽  
Integration Scheme ◽  
Geometrical Shape ◽  
Low Velocity ◽  
Velocity Impact ◽  
Non Linear ◽  
Central Displacement

In this study, non-linear low-velocity impact response of a simply supported sandwich plate with CNTRC face sheets subjected to the impactors with different geometrical shapes is investigated. It has been assumed that the sandwich plate is made up of two face sheets reinforced with CNTs graded along their thickness as X profile and a homogeneous core. In CNT-reinforced layers, a micromechanical model has been used to obtain the effective material properties and the analysis is performed in the framework of the Reddy's higher order shear deformation theory with regard to thermal effects. An analytical model is proposed to capture the response performance of the three-layer sandwich plates under different thermal environments. Through the proposed analytical study, in order to characterize the contact force between the sandwich plate and the impactors, the modified Hertz contact law is utilized. Rayleigh-Ritz method is applied to the Hamilton principle in order to find the set of equations of motion for the impactor as well as the CNTRC sandwich plate. Afterwards, the solution in the time domain is obtained based on Newmark's numerical time integration scheme. After validating the proposed approach, in order to examine the influences of various involved parameters, different parametric studies are conducted. It has been demonstrated that the variation of the initial kinetic energy as one of the parameters under study has a significant effect on the central displacement, contact force, and indentation in both conical and cylindrical impactors and the change in the radius of the cylinder has an insignificant effect on the central displacement. As well, in the case of equal masses, the cylindrical impactor causes more amount of indentation with respect to conical.

Explicit numerical modeling assessment of basalt reinforced composites for low-velocity impact

2019 ◽  
Vol 163 ◽  
pp. 522-535 ◽  
Author(s):  
Cristiano Fragassa ◽  
Felipe Vannucchi de Camargo ◽  
Ana Pavlovic ◽  
Giangiacomo Minak
Keyword(s):  
Numerical Modeling ◽  
Low Velocity Impact ◽  
Reinforced Composites ◽  
Low Velocity ◽  
Velocity Impact
Sign in / Sign up

Export Citation Format

Share Document