Highly efficient nonlinear energy sink

By Mohammad A. AL-Shudeifat. 2014

227 citations recorded by the source corpus.

The performance of the nonlinear energy sink (NES) that composed of a small mass and essentially nonlinear coupling stiffness with a linear structure is considerably enhanced here by including the negative linear and nonlinear coupling stiffness components. These negative linear and nonlinear stiffness components in the NES are realized here through the geometric nonlinearity of the transverse linear springs. By considering these components in the NES, very intersecting results for passive targeted energy transfer (TET) are obtained. The performance of this modified NES is found here to be much improved than that of all existing NESs studied up to date in the literature. Moreover, nearly 99 % of the input shock energy induced by impulse into the linear structures considered here has been found to be rapidly transferred and locally dissipated by the modified NES. In addition, this modified NES maintains its high performance of shock mitigation in a broadband fashion of the input initial energies where it keeps its high performance even for sever input energies. This is found to be achieved by an immediate cascade of several resonance captures at low- and high- nonlinear normal modes frequencies. The findings obtained here by including the negative linear and nonlinear stiffness components are expected to significantly enrich the application of these stiffness components in the TET field of such nonlinear oscillators.

Subfields: Civil and Structural Engineering, Ocean Engineering

View Paper: https://www.semanticscholar.org/paper/4a318288b9f5fd3069582c4202abdc6346eafdf8

How researchers see this paper

The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.

In Civil and Structural Engineering

1. Hu Ding
2. Liqun Chen
3. Francesco Lohengrin Romeo
4. G. Habib
5. Yewei Zhang
6. Tianzhi Yang

In Ocean Engineering

1. Francesco Lohengrin Romeo
2. G. Habib
3. Liqun Chen
4. Yewei Zhang
5. Hu Ding

Citations in the corpus

• Nonlinear Energy Sink for Whole-Spacecraft Vibration Reduction (2017, background): “Some novel NES designs such as rotating eccentric mass [38], highly asymmetric NES [39–41], NES including negative linear and nonlinear stiffness components [42], and 2DOF NES using innovative elastomeric bumper as the critical components realizing nonlinear stiffness [43] have been proposed with ex”
• The tuned bistable nonlinear energy sink (2017, background): “More recently, the bistable NES (BNES), consisting of a small mass connected to the primary system by a spring with both cubic nonlinear and negative linear components [13–15] was also proposed.”