Flexural and eigen-buckling analyses for rectangular steel-concrete partially composite plates(PCPs)with interlayer slip under simply supported and clamped boundary conditions are conducted using the weak form quadrat...Flexural and eigen-buckling analyses for rectangular steel-concrete partially composite plates(PCPs)with interlayer slip under simply supported and clamped boundary conditions are conducted using the weak form quadrature element method(QEM).Both of the derivatives and integrals in the variational description of a problem to be solved are directly evaluated by the aid of identical numerical interpolation points in the weak form QEM.The effectiveness of the presented numerical model is validated by comparing numerical results of the weak form QEM with those from FEM or analytic solution.It can be observed that only one quadrature element is fully competent for flexural and eigen-buckling analysis of a rectangular partially composite plate with shear connection stiffness commonly used.The numerical integration order of quadrature element can be adjusted neatly to meet the convergence requirement.The quadrature element model presented here is an effective and promising tool for further analysis of steel-concrete PCPs under more general circumstances.Parametric studies on the shear connection stiffness and length-width ratio of the plate are also presented.It is shown that the flexural deflections and the critical buckling loads of PCPs are significantly affected by the shear connection stiffness when its value is within a certain range.展开更多
Ductile inorganic semiconductors have recently received considerable attention due to their metal-like mechanical properties and potential applications in flexible electronics.However,the accurate determination of sli...Ductile inorganic semiconductors have recently received considerable attention due to their metal-like mechanical properties and potential applications in flexible electronics.However,the accurate determination of slip pathways,crucial for understanding the deformation mechanism,still poses a great challenge owing to the complex crystal structures of these materials.In this study,wepropose an automated workflow based on the interlayer slip potential energy surface to identify slip pathways in complex inorganic systems.Our computational approach consists of two key stages:first,an active learning strategy is utilized to efficiently and accurately model the interlayer slip potential energy surfaces;second,the climbing image nudged elastic band method is employed to identify minimum energy pathways,followed by comparative analysis to determine the final slip pathway.We discuss the validity of our selected feature vectors and models across various material systems and confirm that our approach demonstrates robust effectiveness in several case studies with both simple and complicated slip pathways.Our automated workflow opens a new avenue for the automatic identification of the slip pathways in inorganic materials,which holds promise for accelerating the high-throughput screening of ductile inorganic materials.展开更多
基金Project(51508562)supported by the National Natural Science Foundation of ChinaProject(ZK18-03-49)supported by the Scientific Research Program of National University of Defense Technology,China
文摘Flexural and eigen-buckling analyses for rectangular steel-concrete partially composite plates(PCPs)with interlayer slip under simply supported and clamped boundary conditions are conducted using the weak form quadrature element method(QEM).Both of the derivatives and integrals in the variational description of a problem to be solved are directly evaluated by the aid of identical numerical interpolation points in the weak form QEM.The effectiveness of the presented numerical model is validated by comparing numerical results of the weak form QEM with those from FEM or analytic solution.It can be observed that only one quadrature element is fully competent for flexural and eigen-buckling analysis of a rectangular partially composite plate with shear connection stiffness commonly used.The numerical integration order of quadrature element can be adjusted neatly to meet the convergence requirement.The quadrature element model presented here is an effective and promising tool for further analysis of steel-concrete PCPs under more general circumstances.Parametric studies on the shear connection stiffness and length-width ratio of the plate are also presented.It is shown that the flexural deflections and the critical buckling loads of PCPs are significantly affected by the shear connection stiffness when its value is within a certain range.
基金supported by the National Natural Science Foundation of China(Nos.91963208,52232010,and 52122213)the Talent Plan of Shanghai Branch,Chinese Academy of Sciences(No.CASSHB-QNPD-2023-003)+1 种基金Shanghai Government(Nos.23JC1404000 and 23ZR1472800)We thank the computational resource provided by the Supercomputer Center in Shanghai Institute of Ceramics for DFT calculations in this study.
文摘Ductile inorganic semiconductors have recently received considerable attention due to their metal-like mechanical properties and potential applications in flexible electronics.However,the accurate determination of slip pathways,crucial for understanding the deformation mechanism,still poses a great challenge owing to the complex crystal structures of these materials.In this study,wepropose an automated workflow based on the interlayer slip potential energy surface to identify slip pathways in complex inorganic systems.Our computational approach consists of two key stages:first,an active learning strategy is utilized to efficiently and accurately model the interlayer slip potential energy surfaces;second,the climbing image nudged elastic band method is employed to identify minimum energy pathways,followed by comparative analysis to determine the final slip pathway.We discuss the validity of our selected feature vectors and models across various material systems and confirm that our approach demonstrates robust effectiveness in several case studies with both simple and complicated slip pathways.Our automated workflow opens a new avenue for the automatic identification of the slip pathways in inorganic materials,which holds promise for accelerating the high-throughput screening of ductile inorganic materials.
