Parameter sensitivity of CFRP retrofitted substandard joints by stochastic computational mechanics

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216275%3A25510%2F20%3A39916003" target="_blank" >RIV/00216275:25510/20:39916003 - isvavai.cz</a>

Result on the web

<a href="https://www.sciencedirect.com/science/article/pii/S0263822318346166" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0263822318346166</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.compstruct.2020.112003" target="_blank" >10.1016/j.compstruct.2020.112003</a>

Result language

angličtina

Original language name

Parameter sensitivity of CFRP retrofitted substandard joints by stochastic computational mechanics

Original language description

The response of both substandard as-built and CFRP retrofitted RC beam-column joints was investigated by a stochastic study to identify the effect of inherent uncertainties in material constitutive models. Since the scatter of the capacity is inevitably influenced by material properties, the relative impact of each material property on the global response was measured by the sensitivity analysis. It was conducted by evaluating the partial correlation coefficient between material properties and simulated response. First, experimentally validated deterministic nonlinear numerical models were developed in FE environment. After that, they were evolved to the stochastic level, which considers the randomness in prominent material parameters. The basic statistical characteristics and probability density functions of response variables were then provided by the probabilistic assessment. Finally, the most influential material parameters characterizing the quasi-static cyclic behavior of the as-built and retrofitted joints were outlined in accordance with the results of sensitivity analyses. In addition, the hysteric response of the as-built and retrofitted specimens was not only well-characterized by the numerical model but also local damages, such as large diagonal cracks in the as-built specimen and shear cracks after CFRP rupture in the retrofitted specimen, were adequately reproduced in the finite element environment.

Czech name

—

Czech description

—

Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

20102 - Construction engineering, Municipal and structural engineering

Project

—

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2020

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Composite Structures

ISSN

0263-8223

e-ISSN

—

Volume of the periodical

238

Issue of the periodical within the volume

15 April 2020

Country of publishing house

GB - UNITED KINGDOM

Number of pages

13

Pages from-to

—

UT code for WoS article

000517841300049

EID of the result in the Scopus database

2-s2.0-85079079217