000021718 001__ 21718
000021718 005__ 20170622131301.0
000021718 04107 $$aeng
000021718 046__ $$k2017-06-15
000021718 100__ $$aMiccoli, Lorenzo
000021718 24500 $$aIN-PLANE BEHAVIOUR OF EARTHEN MATERIALS: A NUMERICAL COMPARISON BETWEEN ADOBE MASONRY, RAMMED EARTH AND COB

000021718 24630 $$n6.$$pComputational Methods in Structural Dynamics and Earhquake Engineering
000021718 260__ $$bNational Technical University of Athens, 2017
000021718 506__ $$arestricted
000021718 520__ $$2eng$$aThe paper presents a comparison between different numerical modelling approaches aiming to simulate the in-plain behaviour of three types of earthen materials, namely adobe masonry, rammed earth and cob. For this purpose, uniaxial and diagonal compression tests were carried out, which allowed determining important mechanical parameters, such as compressive strength, Young’s modulus, Poisson’s ratio, shear strength and shear modulus. Furthermore, the tests allowed assessing the level of non-linear behaviour of the respective stress–strain relationships as well as the failure modes. The experimental results were then used for the calibration of numerical models (based on the finite element method) for simulating the non-linear behaviour of the earth materials under in-plane shear loading. Both macro- and micro-modelling approaches were considered for this purpose. The procedures adopted for model calibration established the reliability of various modelling strategies for the different loading conditions. The simplified approach based on macromodelling shows a satisfactory accuracy and low computational costs. The results reproducing the uniaxial compression are in good correspondence with the post-elastic behaviour observed in the experimental campaign. The micro-modelling approach adopted to reproduce the shear behaviour, even with higher computational cost, represents a suitable tool to predict the adobe masonry and rammed earth collapse mechanisms.

000021718 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000021718 653__ $$aEarthen Materials, Compression Behaviour, Shear Behaviour, Digital Image Correlation, Finite Element Method

000021718 7112_ $$aCOMPDYN 2017 - 6th International Thematic Conference$$cRhodes Island (GR)$$d2017-06-15 / 2017-06-17$$gCOMPDYN2017
000021718 720__ $$aMiccoli, Lorenzo$$iOliveira, Daniel V.$$iGarofano, Angelo$$iSilva, Rui A.
000021718 8560_ $$ffischerc@itam.cas.cz
000021718 8564_ $$s7285575$$uhttps://invenio.itam.cas.cz/record/21718/files/17606.pdf$$yOriginal version of the author's contribution as presented on CD, section: [MS27] Advanced numerical methods for historical masonry monuments preservation in seismic zone
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000021718 962__ $$r21500
000021718 980__ $$aPAPER