Wyniki wyszukiwania - BazTech

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Influence of the Amplitude of Resonance Vibrations on Fatigue Life of a Compressor Blade with Simulated FOD Damage

Bednarz Arkadiusz

Advances in Science and Technology. Research Journal

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2020

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Vol. 14, no 3

22--29

EN

This work presents the results of the numerical analyses pertaining to the influence of resonance vibration amplitude on the fatigue life of a compressor blade with a defect made by a collision with a hard object (FOD). The research object was the first stage compressor blade of the PZL-10W engine. The numerical simulation of the notch formation was performed for the tested blade. The material fatigue models (for e-N analysis), three cyclic hardening models, and two mean stress correction models were used in the numerical analyses. As a result of the numerical analysis, the information on the distribution of principal stress was obtained. The values of the principal stresses were used for numerical e-N fatigue analysis using the aforementioned models of fatigue, hardening, and mean stress correction. Obtained results were compared to previously published experimental research, where a notch was created at the leading edge in 8 blades. The blades damaged under laboratory conditions were subjected to experimental fatigue tests during which the effect of resonance amplitude on the number of damage cycles was determined. As a result of the comparison work carried out, the impact of the vibration amplitude on the durability of the element with plastic deformation was determined.

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Numerical vibration analysis of turbine engine compressor blades depending on geometry and position of the damage

Rygiel P., Obrocki W., Sieniawski J.

Advances in Manufacturing Science and Technology

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2017

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Vol. 41, nr 1

43--55

EN

Paper presents the description of the Finite Element Method used to determine the first frequency shape of the Turbine Engine compressor blade. Numerical calculations were conducted on blades with damages modelled on the CAD (Computer Aided Design) model at different positions and different depth. Reduced stress and frequency of the damaged and undamaged blades are the results of presented work.

PL

W pracy stosowano metodę elementów skończonych do określenia częstości drgań własnych łopatek roboczych sprężarki silnika lotniczego. Obliczenia numeryczne wykonano z zastosowaniem modeli CAD. Przyjęto uszkodzenia na wybranych wysokościach krawędzi łopatki dla różnych typów uszkodzeń. Uzyskano zestawienie naprężeń zredukowanych oraz częstości drgań własnych pierwszej postaci łopatek uszkodzonych oraz nieuszkodzonych.

3

Systemowe wspomaganie projektowania

Weiss Z., Ragan Z., Jansen H.

Prace Naukowe Instytutu Technologii Maszyn i Automatyzacji Politechniki Wrocławskiej. Konferencje

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2003

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Vol. 84, nr 41

223-228

PL

Wspomaganie komputerowe w obecnych procesach projektowych ogranicza się do wspomagania fazy konstrukcyjnej przez systemy CAD albo też do fazy planowania przez systemy do opracowywania wymagań użytkownika (Requirement Engineering). Ponieważ właśnie wczesne fazy procesu powstawania produktu mają najbardziej znaczący wpływ na kształtowanie się jego kosztów, ważnym jest ulepszenie procesu rozwojowego przez integrację systemową fazy planowania, projektowania oraz konstrukcji. Można to osiągnąć przez dostarczenie konstruktorowi skutecznych metod projektowych, bazujących na nich programach komputerowych oraz tworzenie centrów doskonałości, które oferują doradztwo w tym zakresie.

EN

Computer aid in today's process development is limited to support the shape design phase through j CAD systems or to planning phase through requirement engineering systems. Because the early phases of the product creation process have the more important influence on his costs, it is very important to improve him through system integration of the planning, conceptual- and shape design phases. This can be arrived through deliver the designer effective development methods, programs they based on and create centers of excellence they offer consulting in the problem domain. The paper demonstrates the usability and advantages of the solution this consists of methods, software and centers of excellence, working at this problems.