Mechanical behavior and dynamic damage constitutive model of glass fiber-reinforced Vinyl Ester with different fiber contents

Duan, Feiya; Zhang, Runmei; Lei, Jingfa; Liu, Tao; Xuan, Yan; Wei, Zhe

doi:10.1177/0036850420961610

Cited by 3 publications

(2 citation statements)

References 26 publications

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“…Much literature has recently studied the dynamic behavior of glass fiber-reinforced polymers to improve product performance. Duan et al 41 investigated the quasi-static and dynamic compressive behavior of glass-reinforced vinylester resin using different glass fiber mass fractions. The quasi-static compression tests were conducted using a specific electro-hydraulic servo experimental system.…”

Section: Introductionmentioning

confidence: 99%

Dynamic properties and plastic dissipative mechanisms of polymeric adhesive under dynamic compression at various strain rates

Sassi,

Tarfaoui

2023

Journal of Composite Materials

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This work investigated the dynamic compression behavior of structural vinylester adhesive under dynamic compression tests using the Split Hopkinson Pressure Bars technique. The obtained results showed that the dynamic parameters were strain rate sensitive. No macroscopic damage was observed in the specimen at the different applied strain rates. However, the presence of a characteristic second peak mainly at high strain rates on the strain rate profiles was attributed to the plasticity occurrence in the polymer under impact. The non-linear response that appeared on the stress-strain curves of the adhesive had been attributed to the combined material softening and thermal softening. These results demonstrated that the studied adhesive could be considered a potential material for high-rate applications due to the combination of significant toughness with high strength and extensive plasticity. An energetic study determined the energy balance and quantified energy absorption. It was observed that used vinylester adhesive was suitable for dynamic applications because it could absorb a large amount of energy and undergo large compressive deformations without damage. This work provided a complete range of experimental data for structural adhesive, which could help the designer of an energy-absorbing adhesively bonded composite joint structure for high-strain rate applications.

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Section: Introductionmentioning

confidence: 99%

Dynamic properties and plastic dissipative mechanisms of polymeric adhesive under dynamic compression at various strain rates

Sassi,

Tarfaoui

2023

Journal of Composite Materials

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“…Moreover, it has been demonstrated that the proposed dynamic–static conversion equations based on polymers such as plastics and rubbers do not apply to solid propellants. Further, current studies mainly focus on the strength and stiffness of materials, the analytical prediction methods, and the development of constitutive models [ 29 , 30 , 31 ]. However, materials in industrial applications are subjected to not only static but also dynamic loads, probably both at the same time, or both occurring sequentially [ 32 ].…”

Section: Introductionmentioning

confidence: 99%

Numerical Conversion Method for the Dynamic Storage Modulus and Relaxation Modulus of Hydroxy-Terminated Polybutadiene (HTPB) Propellants

Cao

et al. 2022

Polymers

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As a typical viscoelastic material, solid propellants have a large difference in mechanical properties under static and dynamic loading. This variability is manifested in the difference in values of the relaxation modulus and dynamic modulus, which serve as the entry point for studying the dynamic and static mechanical properties of propellants. The relaxation modulus and dynamic modulus have a clear integral relationship in theory, but their consistency in engineering practice has never been verified. In this paper, by introducing the “catch-up factor λ” and “waiting factor γ”, a method for the inter-conversion of the dynamic storage modulus and relaxation modulus of HTPB propellant is established, and the consistency between them is verified. The results show that the time region of the calculated conversion values of the relaxation modulus obtained by this method covers 10−8–104 s, spanning twelve orders of magnitude. Compared to that of the relaxation modulus (10−4–104 s, spanning eight orders of magnitude), an expansion of four orders of magnitude is achieved. This enhances the expression ability of the relaxation modulus on the mechanical properties of the propellant. Furthermore, when the conversion method is applied to the dynamic–static modulus conversion of the other two HTPB propellants, the results show that the correlation coefficient between the calculated and measured conversion values is R2 > 0.933. This proves the applicability of this method to the dynamic–static modulus conversion of other types of HTPB propellants. It was also found that λ and γ have the same universal optimal value for different HTPB propellants. As a bridge for static and dynamic modulus conversion, this method greatly expands the expression ability of the relaxation modulus and dynamic storage modulus on the mechanical properties of the HTPB propellant, which is of great significance in the research into the mechanical properties of the propellant.

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Recent Development of Constitutive Models for Strain-Rate Sensitive FRP Composite Materials

Shubham,

Ray

2024

Engineering Materials

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Mechanical behavior and dynamic damage constitutive model of glass fiber-reinforced Vinyl Ester with different fiber contents

Cited by 3 publications

References 26 publications

Dynamic properties and plastic dissipative mechanisms of polymeric adhesive under dynamic compression at various strain rates

Dynamic properties and plastic dissipative mechanisms of polymeric adhesive under dynamic compression at various strain rates

Numerical Conversion Method for the Dynamic Storage Modulus and Relaxation Modulus of Hydroxy-Terminated Polybutadiene (HTPB) Propellants

Recent Development of Constitutive Models for Strain-Rate Sensitive FRP Composite Materials

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