Experimental and theoretical research of strength and deformability of drywall constructions
A. A. Barmotin, A. B. Kosik
Donbas National Academy of Civil Engineering and Architecture
Annotation: Absence of acknowledgment about the experimental data on the deformation parameters of drywall boards of various thickness does not allow to model the stress-strain state of the diverse and complex drywall constructions with guaranteed accuracy. The tests were conducted on three-point bending with a variable span drywall models of thickness 9.5 and 12.5 mm. The tests were executed in the laboratory using the certified equipment of Zwick Roell company. Analysis of the deformation shows that drywall samples of thickness 9.5 and 12.5 mm have both common and distinct characteristics, while samples of t = 9.5 mm have modulus of elasticity higher on 20–30 % and apparent durability compared to samples of t = 12.5 mm. For a complete analysis of the elastic characteristics also the tests on the uniaxial tensile of axial and transverse samples of t= 12.5 mm were carried out. Load-indicating resistors were used for the whole range of deformation measurement, they were also duplicated by dial indicators. For measuring and recording rapidly changing linear deformations in real time, ОВЕН mobile measuring strain gauge system and Veda load-indicating resistors were used. Numerical modeling of the stress-strain state of lowered drywall ceiling on the D 112 system was executed. Drywall facing has been regarded as integral orthotropic plate with equal transverse and axial joints. The calculation was performed using the «SCAD Office» software complex according to I, III, IV strength theory.
Keywords: drywall boards, strength, deformability, orthotropic materials, load-indicating resistors.
Pages: 139-150.
Link for citation: Barmotin, A. A.; Kosik, A. B. Experimental and theoretical research of strength and deformability of drywall constructions. – Text : electronic. – In: Modern Industrial and Civil Construction. – 2015. – Vol. 11, N 3. – Р. 139-150. – URL: https://donnasa.ru/publish_house/journals/spgs/2015-3/04_barmotin_kosik.pdf (date of access: 19.09.2024). (in Russian)
Vol. 11, N 3 (2015)Journal: Modern Industrial and Civil Construction
Publish house: Donbas National Academy of Civil Engineering and Architecture