progressive collapse
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Author(s):  
Sunita Tolani ◽  
Shiv Dayal Bharti ◽  
Mahendra Kumar Shrimali ◽  
Tushar Kanti Datta

Structures ◽  
2022 ◽  
Vol 37 ◽  
pp. 338-352
Author(s):  
Ibrahim M.H. Alshaikh ◽  
Aref A. Abadel ◽  
Mohammed Alrubaidi

2022 ◽  
Vol 189 ◽  
pp. 107111
Author(s):  
Ying Zhang ◽  
Shan Gao ◽  
Lanhui Guo ◽  
Feng Fu ◽  
Sheliang Wang

Structures ◽  
2022 ◽  
Vol 36 ◽  
pp. 927-934
Author(s):  
Yan Fei Zhu ◽  
Yao Yao ◽  
Ying Huang ◽  
Chang Hong Chen ◽  
Hui Yun Zhang ◽  
...  

2022 ◽  
Vol 171 ◽  
pp. 108810
Author(s):  
Jin Wang ◽  
Yisen Liu ◽  
Kui Wang ◽  
Song Yao ◽  
Yong Peng ◽  
...  

2022 ◽  
pp. 1-24
Author(s):  
Dimitrios K. Zimos ◽  
Panagiotis E. Mergos ◽  
Vassilis K. Papanikolaou ◽  
Andreas J. Kappos

Older existing reinforced concrete (R/C) frame structures often contain shear-dominated vertical structural elements, which can experience loss of axial load-bearing capacity after a shear failure, hence initiating progressive collapse. An experimental investigation previously reported by the authors focused on the effect of increasing compressive axial load on the non-linear post-peak lateral response of shear, and flexure-shear, critical R/C columns. These results and findings are used here to verify key assumptions of a finite element model previously proposed by the authors, which is able to capture the full-range response of shear-dominated R/C columns up to the onset of axial failure. Additionally, numerically predicted responses using the proposed model are compared with the experimental ones of the tested column specimens under increasing axial load. Not only global, but also local response quantities are examined, which are difficult to capture in a phenomenological beam-column model. These comparisons also provide an opportunity for an independent verification of the predictive capabilities of the model, because these specimens were not part of the initial database that was used to develop it.


Materials ◽  
2022 ◽  
Vol 15 (1) ◽  
pp. 387
Author(s):  
Hasan Al-Rifaie ◽  
Nejc Novak ◽  
Matej Vesenjak ◽  
Zoran Ren ◽  
Wojciech Sumelka

Auxetic structures can be used as protective sacrificial solutions for impact protection with lightweight and excellent energy-dissipation characteristics. A recently published and patented shock-absorbing system, namely, Uniaxial Graded Auxetic Damper (UGAD), proved its efficiency through comprehensive analytical and computational analyses. However, the authors highlighted the necessity for experimental testing of this new damper. Hence, this paper aimed to fabricate the UGAD using a cost-effective method and determine its load–deformation properties and energy-absorption potential experimentally and computationally. The geometry of the UGAD, fabrication technique, experimental setup, and computational model are presented. A series of dog-bone samples were tested to determine the exact properties of aluminium alloy (AW-5754, T-111). A simplified (elastic, plastic with strain hardening) material model was proposed and validated for use in future computational simulations. Results showed that deformation pattern, progressive collapse, and force–displacement relationships of the manufactured UGAD are in excellent agreement with the computational predictions, thus validating the proposed computational and material models.


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