Analysis for Composite Material in Plate-Cone Reticulated Shell

2012 ◽  
Vol 174-177 ◽  
pp. 925-928
Author(s):  
Xing Wang

Plate-cone reticulated shell is a new type of space structures with good mechanical behavior and technical economy. Composite material plate is light and strength is high, its ratio intensity is higher a lot than steel material, and elasticity property can be designed, so composite material plate specially applies to prefabricated cone unit of plate-cone reticulated shell. In this paper, GRP plate is regarded as linear elastic material from a view to the engineering application, the multi-layer plate element stiffness matrix is derived with the classic theory of plate and shell, and the GRP plate is designed with equivalent method. Furthermore, the static characteristics for plate-cone reticulated shell with composite material plates are also analyzed in the paper. It is proved by the study that plate-cone reticulated shell with composite material plates is more advantageous and has wide application foreground.

2013 ◽  
Vol 427-429 ◽  
pp. 10-13
Author(s):  
Xing Wang ◽  
Chao Feng ◽  
Nie Chen

Plate-cone reticulated shell is a new type of space structures with good mechanical behavior and technical economy. In this paper, local buckling and influence factors of composite plates in plate-cone reticulated shell are analyzed with theory of composite plate and shell through composite structure finite element method, and the mechanical characteristics of composite plate-cone reticulated shell are studied, some important conclusions were obtained, which can provide theoretical foundation for practical design of composite plate-cone reticulated shell and composite plates.


2016 ◽  
Vol 5 (3) ◽  
pp. 73 ◽  
Author(s):  
Haidar F. AL-Qrimli ◽  
Karam S. Khalid ◽  
Ahmed M. Abdelrhman ◽  
Roaad K. Mohammed A ◽  
Husam M. Hadi

The purpose of this work is to present a clear fundamental thought for designing and investigating straight bevel gear made of composite material. Composite materials have the advantage of being light, producing low noises, and extra loading capacities. Due to these properties, it is highly preferable over conventional materials. A comparison between different types of material used in a gear structure will be shown. The outcome shows that a new form of cheap material may be useful for designing a new type of lighter and stiffer gear, designed for robotic arm applications or any power transmission application.


2021 ◽  
Vol 3 (1) ◽  
Author(s):  
Kailin Zhou

The need to reduce the overall weight of aeronautical and space structures while preserving or even improving their performances make the research and development in the field of advanced composite materials necessary for the advancement of aerospace technologies. This paper provides an overview of composite materials and their fiber reinforcement technology in aerospace field. We discuss the reasons for aircraft manufacturers and airlines to use composites and illustrate the definition of composite material. Then, we list the advantages and disadvantage of composite materials and cite different fiber reinforcement technologies of carbon fibers, aramid fiber, UHMWPE, etc. At last, we summarize the present and future applications of composites materials in aerospace and other civil fields. A conclusion is drawn that in the future, composite materials are set for their development, while continually decreasing its costs is still an important task.


2021 ◽  
Author(s):  
Chun-Ming Jimmy Lin ◽  
Mohsen Saboktakin Rizi ◽  
Chia-Kai Chen

Abstract This study performed experiments and thermodynamic calculations to elucidate the effects of diffusion temperature on interfacial evolution and mechanical properties of pure titanium and carbon steel (i.e., steel) sheets bonded via a new type of multi-pass continuous hot-roll diffusion with nickel interlayer. The interfacial evolution results revealed that this new type of multi-pass continuous hot-roll diffusion treatment showed a very good adherence due to its metallurgy bonding, because it made a remarked improve to between compound and intermetallic compounds relationship. Secondly, in mechanical properties results revealed that the highest shear strength (∼470 MPa) was obtained at a processing temperature of 850°C. The highest peel strength (∼21 N/mm) was obtained in the sample processed at 900°C. Bonding temperatures above and below these levels reduced the bond strength respectively due to poor atom diffusion and excessive compound formation, resulting in joint failure at the Ti-Ni interface. Extensive cleavage planes with various alignments were observed on the fracture surfaces in these cases. Overall, a hot-rolling temperature of 850°C was found to provide the optimal tradeoff between interfacial bonding strength and ductility. This work provided an economical and convenient solution for broadening the engineering application of interface between sheets of pure titanium and steel.


2021 ◽  
Vol 2 (Oktober) ◽  
pp. 50-56
Author(s):  
Muhammad Juliansyah Winarto ◽  
Lalu Saefullah ◽  
Willem Loe Mau

The combat vehicles that Indonesia Army belong to most of the materials are steel, for example the armored vehicle anoa 6x6. Steel material is used as a fire protection on the vehicle, it will greatly affect the performance of the vehicle. It is caused the steel material has a high density, which is around 7750 kg/m3to 8050 kg/m3. So, with a large enough volume of the vehicle body, it will increase the burden of the vehicle. As well as the engine load will increase, and more power is needed to be able to move the vehicle. Seeing these problems, it is necessary to have a research or study on alternative materials to replace the body of a combat vehicle that can withstand fire from opposing weapons that cause personnel to be injured. In this study, experimental and simulation methods were used using the ansys application to analyze the strength of the composite material in the form of an aluminum layer that had been treated to increase the hardness value. Furthermore, it is coated with a composite material using a carbon fiber matrix of epoxy, HGM and polyurethane. The coating material is called Fiber Metal Laminate (FML), so the material used has a lighter density, the load received by the vehicle engine is lighter, and the performance of the vehicle will be more effective and efficient.


Symmetry ◽  
2019 ◽  
Vol 11 (8) ◽  
pp. 1025
Author(s):  
Liangliang Ding ◽  
Jingyuan Zhou ◽  
Wenhui Tang ◽  
Xianwen Ran

The PELE (penetrator with enhanced lateral efficiency) projectile is a new type of penetrator, which has both penetration and fragmentation effects. The damage characteristics of the PELE projectile have never been studied from the perspective of changing the shape of the projectile structure until now. This paper hopes to improve the damage power by changing the structural shape of PELE projectile, and the concept of a truncated cone-shaped PELE projectile is first put forward. In order to compare and analyze the damage power of the truncated cone-shaped PELE projectile and the conventional PELE projectile, six sets of simulation conditions were designed, and the penetration ability and fragmentation effect were used as the main evaluation indicators. According to the known structural parameters of the PELE projectile, the range of angle α of the truncated cone-shaped PELE projectile was determined to be 86.2°–90°. In addition, there is little difference in penetration ability between the two different types of PELE projectile; the damage effect of the truncated cone-shaped PELE projectile on the after-effect target is better than that of the conventional PELE projectile. It is hoped that through further structural optimization, the truncated cone-shaped PELE projectile will have more extensive engineering application value.


2011 ◽  
Vol 399-401 ◽  
pp. 1294-1297
Author(s):  
Li Xin Yin ◽  
Jing Yan ◽  
Guo Wen Li ◽  
Wei Qiang Xu

External thermal insulation technology for building external wall has gradually been one important technology of the construction energy conservation. A new fibre reinforced composite material is made up of cement, flyash, silicon ash, the inflation polystyrene pellet and the admixture, after the experiment examination and the engineering application, the effect of thermal insulation is good, the performance of fire proof is excellent, high durability and low cost, good property of sound absorption. Solved the quality problem exist in the traditional building outer wall thermal insulation system such as the thermal insulation layer fall off, split, seep and so on. The new material can product standardize in factory, increase the construction efficiency; in favor of the construction industrialization and could promote construction business sustainable development.


2012 ◽  
Vol 580 ◽  
pp. 160-164
Author(s):  
Tian Qing Chang ◽  
Dong Chen ◽  
Jun Wei Chen

Man-machine function allocation is an important step in new type tank fire control system design. Aiming at the problem of engineering application abilities deficiency in current method, a flow of function allocation is proposed. System working mechanism, functions and tasks are analyzed to define the level of automation and guide preliminary design. AHP is adopted to seek out the optimal plan. The method can offer new theory reference for intelligent tank fire control system design.


2015 ◽  
Vol 76 (9) ◽  
Author(s):  
Zuraidah Salleh ◽  
Syarifah Yunus ◽  
Mohamad Nor Berhan ◽  
Koay Mei Hyie ◽  
Anizah Kalam ◽  
...  

Nowadays, kenaf are gaining attention in the development and is used in many types of engineering application. This new type of composite also contribute towards the green technology making it favorable in various applications. This research is focused on making a laboratory tabletop by utilizing the unidirectional oriented kenaf fiber as the main material which is layered with woven fiberglass. The project methodology is divided into three sections; preparing the specimen, conducting the experiment and testing as well as data analysis. The mould that contains a layer of woven fiberglass and kenaf fiber were poured from a mixture of polyester resin and polyester hardener. The specimen was then compressed and left to dry  completely before further testing. Tensile test was carried out by following the ASTM D3039, ASTM D7264 standard for flexural test and ASTM D7136 for drop weight impact test. The results data obtained was found to be suitable for lightweight use only.


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