Mechanical behavior of liquid nitrile rubber-modified epoxy resin: Experiments, constitutive model and application

Xu, Xiayu; Gao, Shiqiao; Zhang, Dongmei; Niu, Shaohua; Jin, Lei; Ou, Zhuo-Cheng

doi:10.1016/j.ijmecsci.2018.11.003

Cited by 51 publications

(13 citation statements)

References 28 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The element number of the whole projectile is 49296, and that of the target is 480000. According to the Xu [29], the meshing size in this paper can be well matched with the experimental results. The meshing principle is to encrypt the local area of the projectile and target contact, and the periphery is gradually sparse.…”

Section: Description Femsupporting

confidence: 57%

Scaled Experiment of the Detonation Control System for the High-Speed Penetration on Concrete

2021

Self Cite

View full text Add to dashboard Cite

The design scheme and fabrication technology of the detonation control system for the high-speed deep penetration need to be tested for reliability and effectiveness through shooting range tests. However, the shooting range tests of the high-speed deep penetration are so demanding and expensive that it is difficult for the detonation control system to be tested many times. This paper focuses on penetration characteristics of the detonation control system to put forward a laboratory-scaled experiment method with the low impact velocity. Independent parameters of projectile and target affecting the penetration characteristics are effectively analyzed and extracted. A multi-parameter programming method of the scaled experiment for high-speed deep penetration is established. By adjusting the key parameters, the loading conditions of the scaled experiment can be obtained, which can get the comparable deceleration curve with those of the high-speed deep penetration. Finally, the extreme working environment for the detonation control system in the high-speed deep penetration is simulated through the scaled experiment in the laboratory. The scaled experiment method can get the comparable deceleration peak and time history. It is highly economical, and the experimental process is also repeatable, which can provide a reliable reference for the protection design into the projectile.

show abstract

Section: Description Femsupporting

confidence: 57%

Scaled Experiment of the Detonation Control System for the High-Speed Penetration on Concrete

2021

Self Cite

View full text Add to dashboard Cite

show abstract

“…The dynamic mechanical behavior of polymers can be described by applying the ZWT constitutive model [ 24 , 25 , 26 , 27 , 28 ]. The ZWT model is a nonlinear viscoelastic constitutive equation that can describe the mechanical properties of polymers within the range of viscoelastic deformation.…”

Section: Constitutive Modelmentioning

confidence: 99%

Mechanical Properties and a Constitutive Model of 3D-Printed Copper Powder-Filled PLA Material

Wang

et al. 2021

Polymers

View full text Add to dashboard Cite

Three-dimensional printing is becoming increasingly popular because of its extensive applicability. However, printing materials remain limited. To determine the mechanical properties of polylactic acid (PLA) and copper powder-filled polylactic acid (PLA-Cu) materials subjected to static and dynamic loading, stress–strain curves were obtained under the conditions of different strain rates using a universal material testing machine and a separated Hopkinson pressure bar experimental device. Scanning electron microscopy (SEM) was used to analyze the micro-morphology of the quasi-static compression fracture and dynamic impact sections. The results revealed that the yield stress and elastic modulus of the two materials increased with increasing strain rate. When the strain rate reached a critical point of 0.033 s−1, the rate of crack propagation in the PLA samples increased, resulting in the material undergoing a change from ductile to brittle. The strength of the material subjected to dynamic loading was significantly higher than that subjected to quasi-static loading. The SEM image of the PLA-Cu material revealed that copper powder was evenly distributed throughout the 3D-printed sample and that stress initially began to concentrate at the defect site corresponding to the interface between the copper powder and PLA matrix; this resulted in comparatively lower toughness. This finding was consistent with the photographs captured via high-speed photography, which confirmed that the destruction of the specimen was accompanied by an explosive crushing process. Additionally, a Zhu–Wang–Tang constitutive model was used to fit the experimental results and establish a viscoelastic constitutive model of the material. By comparing the dynamic stress–strain curve to the theoretically predicted curve, we found that the established constitutive model could predict the mechanical properties of the PLA-Cu material with reasonable accuracy when the strain was below 7%.

show abstract

“…In the past decades, considerable research interest has been devoted to the use of ller reinforced resins to achieve various target applications. Various llers, including exible polymers, inorganic powder (IP) particles [13,14], and rubber elastomers [15,17], have been studied to improve the physical properties of epoxy resins. Many recent studies have shown that the combination of resin and IP, such as SiO 2 , Al 2 O 3 , Ca 3 Si 3 O 9 , SiC, and boron nitride, can signi cantly improve the hardness and stiffness of epoxy resin to enhance the stab, cut, and wear resistance of materials.…”

Section: Introductionmentioning

confidence: 99%

Effect of Stirring Speed on Mechanical Properties of the Inorganic-Powder- Reinforced Epoxy Composite

Mao

Yan

Yao

et al. 2022

Preprint

View full text Add to dashboard Cite

Inorganic powders (IPs), including SiO2, Al2O3, and Ca3Si3O9, were used as reinforcements and thermosetting epoxy resin was utilized as a matrix to manufacture IP/epoxy preform. The effects of stirring speed on the physical and mechanical properties of IP/epoxy composites were analyzed. Results showed that the tensile, flexural, and impact mechanical properties of IP/epoxy composites generally increased first and then decreased with the rise in stirring speed. They improved by 27.03%, 13.75%, and 8.78% when the stirring speed was 1000 r·min−1. When the stirring speed was less than 1000 r·min−1, the IP was unevenly distributed and prone to agglomeration and had weak junctions, which resulted in poor mechanical properties. When the stirring speed exceeded 1000 r·min−1, the particles with larger sizes were centrifuged, the powder was dispersed unevenly again, and the strength decreased.

show abstract

Mechanical behavior of liquid nitrile rubber-modified epoxy resin: Experiments, constitutive model and application

Cited by 51 publications

References 28 publications

Scaled Experiment of the Detonation Control System for the High-Speed Penetration on Concrete

Scaled Experiment of the Detonation Control System for the High-Speed Penetration on Concrete

Mechanical Properties and a Constitutive Model of 3D-Printed Copper Powder-Filled PLA Material

Effect of Stirring Speed on Mechanical Properties of the Inorganic-Powder- Reinforced Epoxy Composite

Contact Info

Product

Resources

About