Nonlinear targeted energy transfer: state of the art and new perspectives

Following a brief review of current progress in the field of nonlinear targeted energy transfer (TET), we discuss some general ideas and methods in this field and describe certain possible future venues for further developments; these go beyond the current paradigm of implementing TET by means of nonlinear energy sinks. Four such emerging research fields are discussed, namely (i) the new and promising concept of intermodal targeted energy transfer, (ii) the implementation of TET in nonlinear acoustic metamaterials, (iii) the break of classical reciprocity in elastodynamics in the context of TET, and (iv) the role of TET on the bandwidth of general classes of nonlinear resonators. Our aim is to describe the main ideas, summarize recent developments, outline possible directions for future work, and possibly trigger further research in the discussed topics and also in other possible TET-related topics not discussed herein.

Automated summary

This paper provides a brief overview of the current progress in the field of nonlinear targeted energy transfer (TET) and discusses some future directions for research. The authors introduce four emerging research areas, including intermodal targeted energy transfer, implementation of TET in nonlinear acoustic metamaterials, the breakdown of classical reciprocity in elastodynamics in the context of TET, and the impact of TET on the bandwidth of general classes of nonlinear resonators. The aim of the authors is to outline the main ideas, summarize recent developments, suggest possible directions for future work, and encourage further research in both the discussed topics and other TET-related areas.