Application of the hottest ANSYS in foreign aviati

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The application of ANSYS in foreign aviation industry

the world aviation industry has broad development prospects and huge commercial market, with an opportunity of more than 250billion US dollars every year. Unprecedented business opportunities and competition have prompted the world's aviation production and R & D institutions to strive to improve aircraft performance, reduce fuel consumption, reduce noise and pollution emissions

considering the technical and commercial requirements, aircraft design engineers must face more challenges. For example, due to the limitation of spatial layout, the components will be more complex and more new materials will be used. Components will have to withstand loads such as vibration, overload and thermal shock. Aircraft structural reliability standards and safety requirements are perhaps the most stringent in all industries

engineers usually use finite element analysis (FEA) to study the strength and fatigue performance of aircraft structures, and use explicit analysis to study bird impact, material processing and large deformation. The original intention of manufacturing intelligent composite materials is to bring products with higher added value. Electromagnetic analysis (CEM) is used to predict electromagnetic characteristics such as radar signal and electromagnetic stealth, and fluid dynamics analysis (CFD) is used to study aerodynamics Cabin ventilation (HVAC) and jet engine performance (more complex fluid problems also include heat transfer, aerodynamics, aerodynamic heat, shock wave, combustion, chemical reaction and noise source research). In addition, multi physical field coupling analysis such as fluid structure interaction (FSI) is used to study aeroelastic flutter

ansys rejuvenates the old aircraft

even the old aircraft that was born before the emergence of finite element method and CAE simulation tools can also rejuvenate with the help of ANSYS simulation

for the old T-34 propeller aircraft, the strength and fatigue simulation analysis was carried out again by using ANSYS Workbench, which passed the FAA assessment and obtained the airworthiness license again

for example, the T-34 aircraft, which was widely used in the Second World War, uses a propeller engine and is still used for pilot training and aerobatics. Due to the possible fatigue failure of the materials of the main load-bearing structural members of the wing, in December2004, the Federal Aviation Administration (FAA) of the United States suspended the airworthiness license of about 500 aircraft. Then, raetech company used ANSYS Workbench to conduct FEA analysis on the complex structure of the rivet connection of the load-bearing structural members of T-34 according to the requirements of general aviation mdoification company and the owner of T-34

raetech uses the cad-cae integration, high-quality hexahedral physique, automatic contact detection and definition, nonlinear solution expert control and other features of ANSYS Workbench to quickly and effectively determine the stress distribution at the rivet connection under various load conditions. As shown in the figure, there is obvious stress concentration at the rivet hole at the innermost end of the connection part, and the stress level is high, which is very close to the actual structural damage position. On the basis of ANSYS finite element analysis, the strain and fatigue crack propagation mechanism of this part are analyzed. After evaluation, it is considered that T-34 has not reached the design life limit and can still be used

finally, after the certification of FAA, the T-34 aircraft was allowed to return to the blue sky, and the life assessment report of T-34 and the crack control index of the rivet connection parts were revised

design and analysis of high-performance aeroengine

ansys has also been used in jet and rocket engines for many years. The design of aeroengine has more size and space constraints than the fuselage. Engineers usually can only make small improvements to the transmission system of the structure 4. Microcomputer controlled material testing machine: at present, some of the transmission systems of the testing machine in the market adopt the reducer to obtain better power performance

because the rheological properties, multi-level structure composition and evolution law of polymer matrix nanocomposites under extreme conditions of micromachining are studied, the geometric topology of aeroengine is usually similar. In order to optimize the dynamic performance, it is necessary to make several small modifications to the structure model. This leads to the size optimization design of engine component structure becoming very important, and the accuracy requirements are very high. It is well known that the lattice quality has a great influence on the calculation accuracy. The blades of the engine usually need to use a high-precision structured hexahedral structure, while the more complex combustion chamber and other components can use a mixed lattice to better adapt to the geometric shape

ge global research and Ge aircraft engines of Ge have been using ANSYS icemcfd to provide engine simulation with high-quality hexahedrons and mixers. At the same time, the company has taken ICEM CFD as a unified standard grid division tool in the whole CAE simulation process

for the aerodynamic characteristics analysis of civil aircraft, the mixed lattice and hexahedral body functions of ANSYS ICEM CFD are used to semi automatically divide the external flow field into high-quality lattices, which improves the simulation accuracy and efficiency

after years of development, ANSYS has continuously expanded and improved the CAE simulation solution for engine, and has gradually become the standard software for engine simulation. By using ANSYS, GE and other companies have perfectly combined CAD design and CAE technology, greatly shortening the product R & D cycle. ANSYS provides vibration analysis, strength analysis, heat transfer analysis, fluid dynamics analysis, fluid solid thermal coupling analysis and other functions for engine simulation. In addition, it has developed blademadeler, turbogrid and other blade and channel modeling and analysis tools to improve the analysis efficiency of rotating machinery. (end)

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