000012509 001__ 12509
000012509 005__ 20160816141449.0
000012509 04107 $$aeng
000012509 046__ $$k2016-05-09
000012509 100__ $$aVenglár, M.
000012509 24500 $$aSYSTEM IDENTIFICATION OF A TRUSS BEAM

000012509 24630 $$n22.$$pEngineering Mechanics 2016
000012509 260__ $$bInstitute of Thermomechanics AS CR, v.v.i., Praha
000012509 506__ $$arestricted
000012509 520__ $$2eng$$aThe article deals with structural health monitoring (SHM) using non-destructive vibration based method. Modal analysis of a truss beam was prepared in software ANSYS 13.0. The steel truss beam was supported as a cantilever for this experimental measurement. Accelerations of the structure were measured at 22 points (12 points in the horizontal direction, 6 points in the vertical direction and 4 points were situated at the mid-span of diagonal members). We also focused on model similarity. We compared natural frequencies, also mode shapes and their mutual compliance. The conformity was good enough in many cases and so the model similarity was high. The damage was investigated at the diagonals, which were fastened by bolts to the other members. Then, the bolts were loosened and the response of the structure to simulated damage was determined. Global mode-shapes were influenced minimally by structural damage of the joint and therefore the damage should be monitored directly at the specific elements. Such monitoring can be applied to monitor real truss bridges, but it requires more sensors and hence higher input cost.

000012509 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000012509 653__ $$aStructural Health Monitoring, Modal Analysis, System Identification, Truss Beam, Model Similarity.

000012509 7112_ $$aEngineering Mechanics 2016$$cSvratka, CZ$$d2016-05-09 / 2016-05-12$$gEM2016
000012509 720__ $$aVenglár, M.$$iSokol, M.$$iÁroch, R.
000012509 8560_ $$ffischerc@itam.cas.cz
000012509 8564_ $$s1029874$$uhttps://invenio.itam.cas.cz/record/12509/files/139bo_o_dyn.pdf$$yOriginal version of the author's contribution as presented on CD, id 139, section DYN.
000012509 962__ $$r12369
000012509 980__ $$aPAPER