The traditional definition of internal resonance refers to the condition where two modes within a single structure have natural frequencies in integer multiples of each other, coupled through nonlinear interactions. However, can the targeted energy transfer (TET) in NES be considered a form of internal resonance? Specifically, it involves nonlinear coupling between the modes of the primary structure and the NES. Since the NES does not have a linear natural frequency, the concept of frequency ratio does not apply.
Internal resonance refers to a phenomenon in mechanical or structural systems where two or more modes of vibration, which are typically not harmonically related, become coupled due to their natural frequencies being in a near-integer or integer ratio. This can lead to energy transfer between modes, often resulting in amplified vibrations or more complex dynamic behaviors.
In simpler terms, internal resonance occurs when certain modes of vibration in a system interact with each other due to their natural frequencies being close to a simple ratio (e.g., 2:1, 3:2), allowing energy to transfer between these modes and affect the system's overall response.
Internal resonance is important in structural dynamics and mechanical systems, particularly in systems with nonlinearities, because it can lead to unexpected or amplified vibrations that may influence the system's stability, performance, or lifespan.
- Badges
- Science topic
- Similar topics
- Organizational Psychology
- Training