Engineering Simulation Solutions for the Aerospace Industry

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Transcript of Engineering Simulation Solutions for the Aerospace Industry

HINDUSTHAN COLLEGE OF ENGG AND TECHNOLOGY

APPLICATIONS OF FEA

SUBMITTED BY, SHANKER.J(07ME55) FINAL MECH-B

APPLICATIONS OF FEA IN AEROSPACE ENGINEERINGThe Aerospace Industry produces some of the most sophisticated, highly-engineered systems in the world today. Products must meet exacting standards for performance and safety. However, they must also be innovative and affordable to succeed in the marketplace. To share the costs and the risk of development, manufacturers partner ever more closely with their global supply chain to produce: Aircraft (military and commercial; fixed-wing and rotary-wing; fighters and freighters) Aircraft engines (turbojets, turbofans, turboprops, turboshafts) Spacecraft and missiles (expendable launch vehicles, reusable launch vehicles, satellites, space stations, rocket engines, surfaceto-surface missiles, surface-to-air missiles, air-to-air missiles, airto-surface missiles, ballistic missiles)

Physical testing of these systems is expensive and often dangerous. Today, many companies rely on computer-aided engineering (CAE) software from ANSYS to accurately simulate aerodynamics, engine performance and other mission critical behavior. ANSYS software integrates and couples comprehensive multiphysics capabilities featuring computational fluid dynamics (CFD) and finite element analysis (FEA) for high fidelity simulations such as: Cooling of avionics Dynamic stresses in flexible, moving parts like landing gear Fluid structure interactions (FSI) of high-speed flows with lightweight structures Modal analyses and rotordynamic analyses of rotating engine parts Optimization of electromagnetic actuators in the all-electric airplane and many other applications Performance analysis of flow through multiple blade rows in engines Thermal stress analyses of combustors, turbines, heat shields, anti-icing systems, and other hot components

This unequaled depth and unparalleled breadth of application is made possible with ANSYS preprocessing, CFD and FEA software

featuring ANSYS Mechanical, ANSYS Multiphysics, ANSYS ICEM CFD, ANSYS ICEM CFD Cart3D, ANSYS CFX, FLUENT, ANSYS TAS, and other application-specific products such as ANSYS BladeModeler, ANSYS TurboGrid, ANSYS AUTODYN, ANSYS LSDYNA and ANSYS Icepak.

Simulation Driven Aircraft DevelopmentIn the past decades, aircraft development has been completely revolutionized. The aircraft industry has been challenged as a whole by numerous constraints such as currency fluctuations, safety regulations, fuel prices or new materials. The integration of enterprise-wide technologies such as computer-aided design (CAD) and product lifecycle management (PLM) has accelerated the overall design process. It is clear that simulation - and more generally computer-aided engineering (CAE) - is a cornerstone of current technological advances. The challenge is to accurately predict the performance of the complete vehicle. The vehicle itself is comprised of sophisticated subsystems such as: Airframes and aerostructures, including composites Aircraft engines (turbojets, turbofans, turboshafts, turboprops, internal combustion engines) Auxiliary power units (APUs) Avionics Environmental control systems Flaps and high-lift devices Flight control systems Inlets, diffusers, nozzles and thrust reversers Landing gear Propellers Pylons and nacelles Rotors (rotary-wing aircraft)

Safety systems, including anti-icing and de-icing equipment, pilot ejection systems and fire suppression systems Store separation systems (for military aircraft) Wings and aerodynamic sections

Companies are integrating simulation at all stages of the design process, putting the design at the heart of a virtual environment. This is what Simulation Driven Product Development is all about. As the pioneer of Simulation Driven Product Development , ANSYS helps aircraft companies achieve their goal of zero-rework, accelerating even further the development process and reducing design cost while enabling innovation, creativity and quality. In order to do this, ANSYS provides the most comprehensive and advanced simulation portfolio available, enabling true multidisciplinary optimization (MDO). The portfolio is comprised of wellknown finite element analysis (FEA) and computational fluid dynamics (CFD) software including ANSYS Mechanical, ANSYS Multiphysics, ANSYS ICEM CFD, ANSYS ICEM CFD Cart3D, ANSYS CFX, FLUENT, ANSYS TAS, and application specific products such as ANSYS TurboGrid, ANSYS BladeModeler, ANSYS AUTODYN, ANSYS LS-DYNA and ANSYS Icepak.

Aircraft Engines and Gas Turbines

Large and small aeroengines, aeroderivatives, auxiliary power units and industrial gas turbines play an important role in the transportation and power generation industries. Customers now require manufacturers to deliver technologically advanced, efficient and better performing products which meet new standards in terms of increased reliability, reduced cost, lower fuel consumption, reduced emissions and low noise. Global competition is intense and the ability to deliver superior machines ahead of the competition is essential for survival. Leading manufacturers have adopted Simulation Driven Product Development from ANSYS as a key enabler for meeting these demanding goals. ANSYS computer-aided engineering (CAE) software is used for a wide range of gas turbine applications, including: Aircraft engine fan Combustor analysis Compressor and turbine bladed flow path computational fluid dynamics (CFD) analysis Cavity analysis Heat transfer and thermal stress analysis Inlet and exhaust diffuser analysis Under-cowl fluid flow and heat transfer management Installation aerodynamics Rotordynamic and bearing analysis Secondary flow path analysis Structural and modal analysis of all components (finite element analysis, or FEA) Turbine blade cooling, film cooling and durability studies

The unequalled depth and unparalleled breadth of ANSYS products provides designers and analysts with the greatest range of functionality, applicable to all of the complex physical phenomena encountered in modern gas turbine engines. For instance, the ANSYS computational fluid dynamics (CFD) solvers ANSYS CFX and FLUENT provide all the necessary turbulence and combustion models for high-fidelity simulation of steady and unsteady, rotating and stationary frame, swirling, accelerating, diffusing, combusting, subsonic and supersonic flows with shocks, mixing and sprays. Similarly, ANSYS Mechanical, ANSYS Multiphysics, ANSYS AUTODYN and ANSYS LS-DYNA provide designers with with the necessary tools for linear and non-linear stress analysis of simple and composite materials, contact, dynamics, rotordynamics, conjugate heat transfer and thermal stress analysis. ANSYS gas turbine tools are part of the ANSYS Workbench environment, ensuring start-to-finish, multiphysics workflow and

seamless CAD connection. Productivity-enhancing tools such as ANSYS ICEM CFD, ANSYS TurboGrid and ANSYS BladeModeler, as well as turbomachinery-specific pre- and post-processing deliver true Simulation Driven Product Development performance in a flexible, open environment.

Spacecraft and MissilesThe Spacecraft and Missiles Industry is one of the most difficult in which to compete. The industrys successes and failures still make headlines today, and their accomplishments have earned rocket scientists worldwide acclaim. As demand for commercial use has grown and the industry has matured, competition has also increased. Launch vehicles, engines and satellites are produced worldwide. Launch services are offered globally. Innovative concepts featuring different tradeoffs continue to be developed. Vehicles can be manned or unmanned, expendable or re-usable, launched vertically or horizontally, from the ground or in the air. Operational conditions and engineering challenges are extreme. A

multitude of parts must be designed, engineered and integrated to reliably survive the rigors of space: Avionics and electronics Braking systems Environmental control systems (payload environments, cabin environments) Ejection systems and escape modules Fuel systems and fuel management Landing gear Rocket engines (solid rocket motors, liquid rocket engines, various hybrid engines)

Gas turbine engines are also used to power air-borne missiles. To engineer and develop reliable systems for these extreme environments, the industry has used computer-aided engineering (CAE) simulation software for decades. With each advance in highperformance computing, virtual prototypes become more and more detailed and increasingly accurate. Today, expensive physical testing is focused more on validating final designs rather than on improving designs. Comprehensive multiphysics from ANSYS enables virtual prototypes to account for Fluid-structure interactions of lightweight structures such as folded solar panels of satellites in environmentally controlled payload compartments; thermal stresses in combustors, heat shields, turbine blades, and other components subjected to extreme temperature gradients; and other multi-disciplinary phenomena. These challenging problems become tractable using integrated, advanced technologies from ANSYS such as finite element analysis (FEA), computational fluid dynamics (CFD) and more. ANSYS products renowned in the industry include ANSYS Mechanical, ANSYS Multiphysics, ANSYS ICEM CFD, ANSYS ICEM CFD Cart3D, ANSYS CFX, FLUENT, ANSYS TAS, and other application-specific products such as ANSYS BladeModeler, ANSYS TurboGrid, ANSYS AUTODYN, ANSYS LS-DYNA and ANSYS Icepak.

APPLICATIONS OF FEA IN AUTOMOBILE INDUSTRIESGrowing scrutiny of pollution caused by vehicles, compounded by the rise in oil prices, has increased the emphasis on product innovation in this highly competitive global industry. The most successful companies are differentiating themse