Nonlinear buckling and postbuckling of spiral stiffened FG-GPLRC cylindrical shells subjected to torsional loads - 2021
Kha Hoa Le, Tho Hung Vu, Hong Quan Pham, Hoai Nam Vu
The nonlinear buckling behavior of functionally graded graphene platelet
reinforced composite (FG-GPLRC) cylindrical shells reinforced by ring, stringer
and/or spiral FG-GPLRC stiffeners under torsional loads is studied by an
analytical approach. The governing equations are based on the Donnell shell
theory with geometrical nonlinearity of von Kármán-Donnell-type, combining the
improvability of Le... hiện toàn bộ
#Functionally graded graphene platelet reinforced composite (FG-GPLRC) #Spiral stiffener #Nonlinear buckling #Torsional load #Cylindrical shell
Postbuckling analysis of externally pressured parabola, sinusoidal and cylindrical FG-GRCL panels using HSDT Tập 3 Số 2 - Trang 34-42 - 2023
Nguyen Thi Phuong, Cao Van Doan, Vu Hoai Nam
In the present paper, by using the higher-order shear deformation theory and the
strain-displacement relationships of large deflection, the postbuckling analysis
of the functionally graded graphene-reinforced composite laminated (FG-GRCL)
parabola, sinusoidal, and cylindrical externally pressured panels is presented
in detail. The complex curvature functions of the parabola and sinusoidal panels
a... hiện toàn bộ
#Postbuckling analysis; Cylindrical panel; Parabola panel; Sinusoidal panel; Higher-order shear deformation theory
Prediction of compressive strength of concrete at high heating conditions by using artificial neural network-based Bayesian regularization Tập 2 Số 1 - Trang 9-21 - 2022
Marijana Hadzima-Nyarko, Son Hoang Trinh
Cement concrete is the most commonly used material today for constructing
residential or commercial buildings, industrial parks, or particular components
such as tunnel slabs where there is a high risk of fire. This structure requires
concrete to be subjected to high temperatures generated by fires. However,
concrete under the influence of high temperature has very complex behavior
states with def... hiện toàn bộ
#Machine learning #ANN #compressive strength #Bayesian regularization #K-fold cross-validation
Temperature effect on the characteristic quantities of microstructure and phase transition of the alloy Ag0.25Au0.75 - 2023
Ștefan Țălu , Tuan Quoc Tran, Hoang Van Ong, Ha Thi Vu, Duyen Thi Tran, Thu-Cuc Thi Nguyen
In this research, Molecular Dynamics (MD) simulations were conducted to explore
the temperature effect on the microstructure and phase transition of the
Ag0.25Au0.75 alloy. The findings reveal that as the temperature rises, the
material's phase transition switches from crystalline to liquid and vice versa.
Notably, during the phase transition, significant changes occur in the link
length (r), the ... hiện toàn bộ
#Ag0.25Au0.75 alloy #microstructure #molecular dynamics #phase transition #temperature.
Temperature effect on the characteristic quantities of microstructure and phase transition of the alloy Ag0.25Au0.75 Tập 3 Số 1 - Trang 45-53 - 2023
Ștefan Țălu , Tuan Quoc Tran, Hoang Van Ong, Ha Thi Vu, Duyen Thi Tran, Thu-Cuc Thi Nguyen
In this research, Molecular Dynamics (MD) simulations were conducted to explore
the temperature effect on the microstructure and phase transition of the
Ag0.25Au0.75 alloy. The findings reveal that as the temperature rises, the
material's phase transition switches from crystalline to liquid and vice versa.
Notably, during the phase transition, significant changes occur in the link
length (r), the ... hiện toàn bộ
#Ag0.25Au0.75 alloy #microstructure #molecular dynamics #phase transition #temperature.
Buckling behavior of spiral stiffened sandwich FGM cylindrical shells with porous core under axial compression using the FSDT - Trang 1-9 - 2022
Nguyen Hoang Quan, Vu Minh Duc, Nguyen Thi Phuong, Le Ngoc Ly, Nguyen Thi My Trang
The linear buckling behavior of functionally graded cylindrical shells with
porous core stiffened by spiral stiffeners under axial compression using the
first-order shear deformation theory is presented in this paper. The improved
Lekhnitskii’s smeared stiffeners technique is applied for shear deformable
spiral FGM stiffeners. Approximate analytical solutions are assumed to satisfy
the simply supp... hiện toàn bộ
#Functionally graded material; Porous core; Spiral stiffener; Linear buckling; Axial compression; Cylindrical shell; First-order shear deformation theory.
Forecast of surface chloride concentration of concrete utilizing ensemble decision tree boosted - 2022
Anh-Tuan Tran, Thanh-Hai Le, Huu May Nguyen
This study proposes the application of Ensemble Decision Tree Boosted (EDT
Boosted) model for forecasting the surface chloride concentration of marine
concrete A database of 386 experimental results was collected from 17 different
sources covering twelve variables was used to build and verify the predictive
power of the EDT model. The input factors considered the changes in eleven
variables, incl... hiện toàn bộ
#Machine learning #Ensemble Descion Tree Boosted (EDT Boosted) #surface chloride concentration
Estimation of California Bearing Ratio of Soils Using Random Forest based Machine Learning - 2021
Dung Quang Vu, Duc Dam Nguyen, Quynh-Anh Thi Bui, Duong Kien Trong, Indra Prakash, Binh Thai Pham
California Bearing Ratio (CBR) is an essential parameter utilized to evaluate
the strength of the soil subgrades and base course materials of different types
of pavements. In this study, the Machine Learning (ML) approach has been adopted
using Random Forest (RF) model to estimate the CBR of the soil based on 10 input
parameters such as Plasticity Index (PI), Liquid Limit (LL), Silt Clay content
(... hiện toàn bộ
#Machine Learning #California Bearing Ratio #Random Forest
Nonlinear dynamic buckling analysis of the FG-GPLRC cylindrical and sinusoid panels with porous core under time-dependent axial compression - Trang 13-22 - 2024
Nguyen Thi Phuong, Vu Minh Duc, Luu Ngoc Quang
The nonlinear dynamic buckling responses of functionally graded graphene
platelet reinforced composite (FG-GPLRC) cylindrical and sinusoid panels with
porous core are presented in this paper. The governing formulations are
established by applying the nonlinear higher-order shear deformation theory
(HSDT). an approximation technique is used to determine the stress function for
complexly curved pane... hiện toàn bộ
#Sinusoid panel; Cylindrical panel; Dynamic buckling; Higher-order shear deformation theory (HSDT); Nonlinear mechanics; Functionally graded graphene platelet-reinforced composite