Determination and Comparison of Modal Parameters of a High Lifting Low Pressure Turbine Blade Under Ni-Based Superalloys Using Computational Modal Analysis

Khan, Sangeen; Arif, Irsalan; Safdar, Maliha

doi:10.1109/ibcast51254.2021.9393274

Cited by 3 publications

(1 citation statement)

References 3 publications

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“…The natural frequency of vibration of turbine blades made of IN 738 and U500 alloys was determined. In [5] the authors studied the behavior of the LPT gas turbine blade made of Nickel-based superalloys, IN 738, U500, and Mar-M246. Parameters such as maximum amplitude, natural frequency, and blade mass were determined for each turbine blade material.…”

Section: Introductionmentioning

confidence: 99%

Structural and modal analysis of gas turbine blade using ansys

Paricharak

Tiwari

2022

IOP Conf. Ser.: Mater. Sci. Eng.

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Gas turbine technology has advanced significantly during the last twenty years. The advancement in materials technology, new coatings, and novel cooling techniques are driving the expansion. Material selection is critical since turbomachinery design is complicated, and material performance is directly connected to efficiency. The materials should be able to withstand high vibrations, high temperature, and pressure. In this work, the maximum stress and the deformation induced due to pressure were determined to study the vibrational response, mode shapes, and natural frequencies. Four different materials have been considered, namely Inconel 617, Titanium alloy, Rhenium alloy, and Nimonic 80A. A suitable material for a gas turbine blade was suggested after analyzing these materials. The 3D CAD model is modeled in CATIA V5 and analysis is carried out using FEM-based software ANSYS

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Section: Introductionmentioning

confidence: 99%

Structural and modal analysis of gas turbine blade using ansys

Paricharak

Tiwari

2022

IOP Conf. Ser.: Mater. Sci. Eng.

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Location-Based Integration of Internal Lattice Structures in a Turbine Blade for Mass Reduction and Dynamic Characteristic Comparison

Safdar,

Shen,

Saheby

2024

Int. J. Aeronaut. Space Sci.

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Impact of internal lattice structures on the weight and natural frequencies of a low pressure turbine blade

Safdar,

Shen,

Saheby

2024

Proceedings of the Institution of Mechanical Engineers, Part G:

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Vibration characteristics play a crucial role in the overall performance of Low-pressure (LP) turbine blades and different techniques are developed to enhance vibrational response by increasing natural frequencies. The present analysis aims to develop a new technique based on the investigation of improvement in natural frequencies and mass reduction of a topology-optimized blade design through location-based integration of lattice structures inside the blades. FE models are developed for three different lattice locations based on mode shape behavior obtained through modal analysis of two different nickel-based alloys at stressed and unstressed conditions. The results show that the internal BCC lattice at specific locations showed better vibrational characteristics compared to other incorporated lattice structures, and validates the location-based integration scheme for enhancement of natural frequencies and reduced mass in applied conditions. By this method, 5.7% mass reduction was achieved from an already 35% mass-reduced blade along with enhancement in the first and second natural frequencies by 8.2% and 5.9% respectively when unstressed. At stressed condition, the natural frequencies increased by ≈7.7% and ≈6.6%.

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Determination and Comparison of Modal Parameters of a High Lifting Low Pressure Turbine Blade Under Ni-Based Superalloys Using Computational Modal Analysis

Cited by 3 publications

References 3 publications

Structural and modal analysis of gas turbine blade using ansys

Structural and modal analysis of gas turbine blade using ansys

Location-Based Integration of Internal Lattice Structures in a Turbine Blade for Mass Reduction and Dynamic Characteristic Comparison

Impact of internal lattice structures on the weight and natural frequencies of a low pressure turbine blade

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