Mechanics of composite materials with distorted structure (review). continuum theory, fiber composites

1991 ◽  
Vol 27 (5) ◽  
pp. 429-443 ◽  
Author(s):  
S. D. Akbarov ◽  
A. N. Guz'
Keyword(s):  
Composite Materials ◽  
Continuum Theory ◽  
Fiber Composites ◽  
Distorted Structure ◽  
Mechanics Of Composite Materials

scholarly journals Introduction to Macroscopic Optimal Design in the Mechanics of Composite Materials and Structures

2021 ◽  
Vol 5 (2) ◽  
pp. 36
Author(s):  
Aleksander Muc
Keyword(s):  
Composite Materials ◽  
Composite Structures ◽  
Constitutive Relations ◽  
A Priori ◽  
Chemical Properties ◽  
Composite Plates ◽  
Failure Criteria ◽  
Lagrange Equations ◽  
Homogenization Methods ◽  
Mechanics Of Composite Materials

The main goal of building composite materials and structures is to provide appropriate a priori controlled physico-chemical properties. For this purpose, a strengthening is introduced that can bear loads higher than those borne by isotropic materials, improve creep resistance, etc. Composite materials can be designed in a different fashion to meet specific properties requirements.Nevertheless, it is necessary to be careful about the orientation, placement and sizes of different types of reinforcement. These issues should be solved by optimization, which, however, requires the construction of appropriate models. In the present paper we intend to discuss formulations of kinematic and constitutive relations and the possible application of homogenization methods. Then, 2D relations for multilayered composite plates and cylindrical shells are derived with the use of the Euler–Lagrange equations, through the application of the symbolic package Mathematica. The introduced form of the First-Ply-Failure criteria demonstrates the non-uniqueness in solutions and complications in searching for the global macroscopic optimal solutions. The information presented to readers is enriched by adding selected review papers, surveys and monographs in the area of composite structures.

Predictions of the Mechanical Performance of Leaf Fiber Thermoplastic Composites by FEA

2021 ◽  
Author(s):  
Faris M. AL-Oqla
Keyword(s):  
Composite Materials ◽  
Cantilever Beam ◽  
Mechanical Performance ◽  
Natural Fiber ◽  
Fiber Composite ◽  
Fiber Composites ◽  
Fiber Types ◽  
Natural Fiber Composites ◽  
Pull Out ◽  
Structural Applications

The available potential plant waste could be worthy material to strengthen polymers to make sustainable products and structural components. Therefore, modeling the natural fiber polymeric-based composites is currently required to reveal the mechanical performance of such polymeric green composites for various green products. This work numerically investigates the effect of various fiber types, fiber loading, and reinforcement conditions with different polymer matrices towards predicting the mechanical performance of such natural fiber composites. Cantilever beam and compression schemes were considered as two different mechanical loading conditions for structural applications of such composite materials. Finite element analysis was conducted to modeling the natural fiber composite materials. The interaction between the fibers and the matrices was considered as an interfacial friction force and was determined from experimental work by the pull out technique for each polymer and fiber type. Both polypropylene and polyethylene were considered as composite matrices. Olive and lemon leaf fibers were considered as reinforcements. Results have revealed that the deflection resistance of the natural fiber composites in cantilever beam was enhanced for several reinforcement conditions. The fiber reinforcement was capable of enhancing the mechanical performance of the polymers and was the best in case of 20 wt.% polypropylene/lemon composites due to better stress transfer within the composite. However, the 40 wt.% case was the worst in enhancing the mechanical performance in both cantilever beam and compression cases. The 30 wt.% of polyethylene/olive fiber was the best in reducing the deflection of the cantilever beam case. The prediction of mechanical performance of natural fiber composites via proper numerical analysis would enhance the process of selecting the appropriate polymer and fiber types. It can contribute finding the proper reinforcement conditions to enhance the mechanical performance of the natural fiber composites to expand their reliable implementations in more industrial applications.

Mechanics of Composite Materials

1975 ◽  
Vol 42 (3) ◽  
pp. 748-748 ◽  
Author(s):  
Robert M. Jones ◽  
C. W. Bert
Keyword(s):  
Composite Materials ◽  
Mechanics Of Composite Materials

Application of Natural Fiber Composites in Engineering Industries: A Comparative Study

2016 ◽  
Vol 854 ◽  
pp. 59-64
Author(s):  
S. Syath Abuthakeer ◽  
Ramakrishnan Vasudaa ◽  
Afsana Nizamudeen
Keyword(s):  
Composite Materials ◽  
Natural Fiber ◽  
Natural Fibers ◽  
Physical And Mechanical Properties ◽  
Fiber Composites ◽  
Future Research ◽  
Natural Fiber Composites ◽  
Reinforcing Agent ◽  
Wear And Tear ◽  
Cutting Out

Today’s technological innovations call for continual improvement in the field of material science to substitute the heavy structures with lightweight materials without compromising the strength. For this purpose composite materials (combination of two or more materials) are developed. The incorporation of natural fibers as reinforcing agent in both thermoset and thermoplastic polymer composites has gained increasing applications both in many areas of engineering and technology. A variety of natural fibers based polymer composite materials have been developed using modified synthetic strategies to extend its application from automotive to biomedical fields. The eco friendliness and reduction in wear and tear aspects in machineries with the use of natural fiber composites also has been captured in this paper. This paper is an earnest compilation of the data regarding a variety of natural fibers, their physical and mechanical properties, their resilience and strength. Considerable effort has been put in bringing the data on various natural fiber composites in one place by cutting out the details from various sources so as to make it as a ready reckoner for any researcher for future research in this area.

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