Multiple studies and engineering models confirm that centrifugal force induces a geometric stiffening effect on rotating blades, increasing their structural stiffness and natural frequencies.
Evidence for · 7
A study on the dynamics of rotating beams with functionally graded properties
2009 · cited by 86
The study notes that flexible beams, including blades, become stiffer under high-speed rotation due to geometric stiffening from centrifugal and axial-bending coupling.
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More for · 6
Rubbing dynamic characteristics of the blisk-casing system with elastic supports
2019 · cited by 70
Centrifugal stiffening is explicitly included as a key rotating effect that alters the structural dynamics of blades.
Free vibration analysis of a rotating varying-thickness-twisted blade with arbitrary boundary conditions
2021 · cited by 46
The formulation incorporates centrifugal force effects which directly influence the natural frequencies and modal characteristics of rotating blades.
Study of Centrifugal Stiffening on the Free Vibrations and Dynamic Response of Offshore Wind Turbine Blades
2022 · cited by 18
The study demonstrates that centrifugal force exerts an inertia force during deflection that increases natural frequencies and structural stiffness.
The floating frame of reference formulation for rotordynamics applications: limitations and practical solutions
2025 · cited by 1
Centrifugal stiffening is described as the phenomenon where rotating components experience tensile forces that increase natural frequencies and enhance structural stiffness.
The Flattening and Stiffening Effect of Centrifugal Stress on Circular Saw Blades in Different States
2022 · cited by 1
The research confirms that rotating centrifugal stress exerts a stiffening effect, increasing the axial stiffness of the outer edges of rotating blades.
Speed Dependency of Coupled Rotor-Blade Torsional Natural Frequencies
2013 · cited by 1
Natural frequencies of blades depend on rotational speed because structural stiffness changes in response to centrifugal loading.