Journal:AIAA Journal

Abstract:Light-activated shape memory polymer (LaSMP) is a novel actuator with dynamic Young’s modulus and strain
when exposed to ultraviolet lights, which can be used in noncontact vibration control. This study focuses on the
vibration control effect of LaSMP patches on hemispherical shells with free boundaries. An LaSMP strain variation
model is presented with experimental verifications. Based on the strain model, the control forces ofLaSMPpatches on
hemispherical shells are introduced. The FEMmethod is used to obtain natural frequencies of the free hemispherical
shell by solid modeling in ANSYS and proved by comparing numerical results with analytical and experimental
results. Using the modal expansion method, the LaSMP vibration control of hemispheres is investigated, and
independent modal responses are presented and evaluated. The results indicate that LaSMP patch can control
vibrations of hemispherical shells by reducing vibration amplitudes. And the control effect is better for low modal

Indexed by:Journal paper

Discipline:Engineering

First-Level Discipline:Mechanics

Document Type:J

Volume:58

Issue:3

Page Number:1369-1376

Translation or Not:no

Attachments: