Demonstration of accelerating and decelerating nonlinear impulse waves in functionally graded granular chains
Abstract
We propose a tunable cylinder-based granular system that is functionally graded in its stiffness distribution in space. With no initial compression given to the system, it supports highly nonlinear waves propagating under an impulse excitation. We investigate analytically, numerically and experimentally the ability to accelerate and decelerate the impulse wave without a significant scattering in the space domain. Moreover, the gradient in stiffness results in the scaling of contact forces along the chain. We envision that such tunable systems can be used for manipulating highly nonlinear impulse waves for novel sensing and impact mitigation purposes.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Jul 23, 2018
- Source ID
- 10.1098/rsta.2017.0136
Entities
People
- Eunho Kim
- Jinkyu Yang
- Rajesh Chaunsali
Organizations
- Air Force Office of Scientific Research
- Jeonbuk National University
- National Research Foundation
- National Research Foundation of Korea
- National Science Foundation
- University of Washington