3-D finite element modeling of sequential oblique cutting of unidirectional carbon fiber reinforced polymer

In recent years, three-dimensional auxetic structures have attracted great interest. Generally, three-dimensional auxetic structures are of complicate geometries which make them difficult to fabricate, benefiting from the development of additive manufacturing technologies, many three-dimensional auxetic structures can be made from metals or polymers. However, to the authors' knowledge, the additive manufacturing technology of fiber reinforced polymer is not fully developed, and none three-dimensional auxetic structure made from fiber reinforced polymer has been reported before. To integrate the high specific stiffness, high specific strength, and light weight merits of high-performance fiber reinforced polymer composites into three-dimensional auxetic structures with unique properties, research on composite three-dimensional auxetic structures made from fiber reinforced polymer should be conducted. This paper presents the composite three-dimensional re-entrant auxetic structures made from carbon fiber reinforced polymer laminates using an interlocking assembly method. The auxetic nature of the composite structure has been verified by experimental testing and finite element simulations. Based on the finite element models, the dependences of the Poisson's ratio and effective compression modulus of the composite auxetic three-dimensional re-entrant structure on the re-entrant angle have been studied and compared to metal three-dimensional re-entrant structure. A comparative study of the Poisson's ratio and specific stiffness of carbon fiber reinforced polymer composite auxetic structure with the three-dimensional printed polymer and metal auxetic structures in literature has also been conducted.

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Finite element analysis of the parameters influencing the failure modes of carbon fiber reinforced polymer cores

IEEE Access ◽

10.1109/access.2021.3085132 ◽

2021 ◽

pp. 1-1

Author(s):

Jiayun Cao ◽

Xiaomin Zhang ◽

Hongbo Chen ◽

Yu Jiang

Keyword(s):

Finite Element Analysis ◽

Finite Element ◽

Carbon Fiber ◽

Failure Modes ◽

Fiber Reinforced Polymer ◽

Carbon Fiber Reinforced Polymer ◽

Fiber Reinforced ◽

Element Analysis ◽

Reinforced Polymer ◽

Carbon Fiber Reinforced

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The Impact of the HMCFRP Ratio on the Strengthening of Steel Composite I-Beams

Mathematical Problems in Engineering ◽

10.1155/2012/183906 ◽

2012 ◽

Vol 2012 ◽

pp. 1-13 ◽

Cited By ~ 4

Author(s):

E. Agcakoca ◽

M. Aktas

Keyword(s):

Finite Element ◽

Carbon Fiber ◽

Polymer Materials ◽

Fiber Reinforced Polymer ◽

Carbon Fiber Reinforced Polymer ◽

Steel Beams ◽

Fiber Reinforced ◽

Reinforced Polymer ◽

Carbon Fiber Reinforced ◽

The Impact

Carbon fiber-reinforced polymer materials have become popular in the construction industry during the last decade for their ability to strengthen and retrofit concrete structures. The recent availability of high-modulus carbon fiber-reinforced polymer strips (HMCFRP) has opened up the possibility of using this material in strengthening steel structures as well. The strips can be used in steel bridge girders and structures that are at risk of corrosion-induced cross-sectional losses, structural deterioration from aging, or changes in function. In this study, a set of bending experiments was performed on three types of steel beams reinforced with HMCFRP. The results were used to enhance a nonlinear finite element model built with ABAQUS software. The accuracy of the mathematical models for HMCFRP, epoxy, and steel profiles was compared with the experimental results, and the ability of HMCFRP to continue carrying load from the steel beams during rupture and postrupture scenarios was observed using numerical analysis. Using these verified finite element models, a parametric analysis was performed on the HMCFRP failure modes and the quantity to be used with IPE profile steel beams. The maximum amount of HMCFRP needed for strengthening was determined, and an upper limit for its use was calculated to avoid any debonding failure of the fiber material.

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Development of finite element model for embedded carbon fiber–reinforced polymer rod in reinforced concrete frame joints

International Journal of Protective Structures ◽

10.1177/2041419620917689 ◽

2020 ◽

Vol 11 (4) ◽

pp. 533-553

Author(s):

Shahnaz Basim ◽

Farzad Hejazi ◽

Raizal Saifulnaz Bin Muhammad Rashid ◽

Milad Hafezolghorani Esfahani

Keyword(s):

Finite Element ◽

Reinforced Concrete ◽

Carbon Fiber ◽

Fiber Reinforced Polymer ◽

Carbon Fiber Reinforced Polymer ◽

Fiber Reinforced ◽

Reinforced Concrete Frame ◽

Concrete Frame ◽

Reinforced Polymer ◽

Carbon Fiber Reinforced

The stiffness and strength of joints are the main factors in providing stability and ductility of a structure during dynamic load such as earthquake. In the high-humidity areas, the reinforcement is exposed to corrosion, which commonly occurs in the joints, due to the presence of micro-cracks in the joints, shrinkage or other concrete casting issues. Therefore, one of the main failure mechanisms of building during an earthquake is caused by damage in the joints in humid areas. This is mainly caused by corroded steel reinforcement, which reduces functionality of the frame joints in transferring the loads. This study proposes a new design for reinforced beam–column joints with embedded carbon fiber–reinforced polymer rods, which possesses extremely high strength and resistance against corrosion and high stiffness. The finite element model for embedded carbon fiber–reinforced polymer in the joints was developed in order to evaluate the performance of the proposed joints during earthquake execution. The developed program was verified through an experimental test on reinforced concrete frame subjected to vibration using dynamic actuator. The finite element program was implemented for one-story reinforced concrete frame and two-story frame building with proposed joints and seismic analysis. The results demonstrated a significant improvement in the performance of the frames reinforced with embedded carbon fiber–reinforced polymer in joints in terms of lateral load resistance capacity and failure mechanism.

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