Numerical analysis of glareaircraft panel
Başlık çevirisi mevcut değil.
- Tez No: 722097
- Danışmanlar: DR. XAVİER MARTINEZ GARCIA, DR. JOAQUİN HERNANDEZ ORTEGA
- Tez Türü: Yüksek Lisans
- Konular: Havacılık ve Uzay Mühendisliği, Aeronautical Engineering
- Anahtar Kelimeler: Belirtilmemiş.
- Yıl: 2018
- Dil: İngilizce
- Üniversite: Universitat Politècnica de Catalunya
- Enstitü: Yurtdışı Enstitü
- Ana Bilim Dalı: Belirtilmemiş.
- Bilim Dalı: Belirtilmemiş.
- Sayfa Sayısı: 61
Özet
Özet yok.
Özet (Çeviri)
Airframes are subjected to various loads from mechanical to thermal loads during operations of aircrafts. Sections made by using GLARE are affected by this loads, in terms of their mechanical properties. A detailed understanding of the behaviour of these laminates is necessary for further improvement of their performance and durability. With the increase in complexity of structures and material systems, the need for powerful design tools becomes evident. Numerical simulation is a very powerful tool to investigate the behaviour of materials and structures. In this thesis, the mechanical behaviour of fiber metal laminates has been characterized via numerical analysis. This work was carried out focusing on the numerical simulation of the structures made out of GLARE, using PLCd finite element code, an FE code, developed by the RMEE (Department of Structures and Strength of Materials, UPC) and CIMNE (International Center for Numerical Methods in Engineering) which allows the accurate analysis of elastic and plastic behaviour of materials under various loads. Several numerical tests have been simulated. Special attention has been placed on describing the Serial/Parallel mixing theory and its scope to deal with the numerical simulation. An iterative learning process has been carried out in order to get the enough knowledge to deal with the simulation of the experimental tests carried out in other literature sources. The preliminary stages have been done with aim of gaining experience regarding the mesh sizes, parameter inputs and the differences obtained with different parameters in terms of numerical results accuracy and also computational time costs. Afterwards, simulations have been done in order to learn how to simulate aluminium composite laminates in the linear and non-linear range, as well as to fully understand the performance of the SP theory. The simulations conducted and the results analysed have allowed to obtain an excellent understanding on the mechanical performance of both aluminium and composite materials, the complexities associated with material non-linearities, and the requirements of non-linear finite element methods. This work presents all these simulations as well as the conclusions obtained from each one of them. Hence, the SP mixing theory, in addition with an appropriate constitutive equations, has showed that the approach is capable of simulating loads and predict the material non-linear behaviour of the composite components. The concept of continuum damage mechanics is used, with a damage model for fiber and matrix.
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