000012591 001__ 12591
000012591 005__ 20160920162631.0
000012591 04107 $$aeng
000012591 046__ $$k2016-09-05
000012591 100__ $$aLiu, S.
000012591 24500 $$aElastic postbuckling response of bilaterally constrained non-prismatic columns

000012591 24630 $$n6.$$pInsights and Innovations in Structural Engineering, Mechanics and Computation
000012591 260__ $$bTaylor and Francis Group, London, UK
000012591 506__ $$arestricted
000012591 520__ $$2eng$$aAxially loaded bilaterally constrained columns can attain multiple snap-through buckling events in their elastic postbuckling response for use as energy concentrators that transform external quasi-static displacement input to high-rate motions to excite vibration-based piezoelectric transducers. Regulation of the postbuckling behavior can lead to increased performance of the energy harvesting device. This paper presents how stiffness variations along the column element lead to enhanced control of the noted elastic postbuckling response. Results from experiments and numerical simulations show that non-uniform stiffness designs are able to tailor the location and sequence of buckling events by creating a concentrated buckling region on the column. Compared to a uniform design, non-prismatic columns can attain a higher number of mode transitions under the same global strain level and also create local stress waves that propagate along the element due to the stiffness variations, which leads an enhanced kinetic energy generation during the postbuckling response.

000012591 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000012591 653__ $$a

000012591 7112_ $$aSixth International Conference on Structural Engineering, Mechanics and Computation$$cCape Town, South Africa$$d2016-09-05 / 2016-09-07$$gSEMC2016
000012591 720__ $$aLiu, S.$$iBurgueño, R.
000012591 8560_ $$ffischerc@itam.cas.cz
000012591 8564_ $$s1759275$$uhttps://invenio.itam.cas.cz/record/12591/files/039.pdf$$yOriginal version of the author's contribution as presented on CD, 039.pdf.
000012591 962__ $$r12552
000012591 980__ $$aPAPER