Investigation of the convergence of a method of computing the flow around cascades in a variable thickness layer

1978 ◽  
Vol 14 (2) ◽  
pp. 194-200
Author(s):  
G. I. Chmyr ◽  
A. M. Kuzemko
Keyword(s):  
Variable Thickness ◽  
Thickness Layer

scholarly journals Forensic Engineering Evaluation of Excessive Differential Settlement on Compressible Clays

2021 ◽  
Vol 37 (1) ◽  
Author(s):  
Rune Storesund ◽  
Alan Kropp
Keyword(s):  
Variable Thickness ◽  
Differential Settlement ◽  
Housing Project ◽  
Root Cause ◽  
Forensic Engineering ◽  
Thickness Layer

This forensic engineering (FE) study evaluated root cause errors associated with excessive differential settlements on a housing project constructed on top of a variable thickness layer of highly compressible clays. The structures were reported to have experienced differential settlements on the order of 2 to 10 in. across 40 ft. The FE study examined fundamental assumptions, granularity/resolution of the settlement and differential settlement analyses, and finalized grading plan vs. the conceptual grading plan used as a basis for the differential settlement predictions. The FE study found numerous discrepancies between the “idealized site” used as a basis of analysis and the “actual site” as constructed.

Effect of Scanning Direction on Microstructure and Mechanical Properties of Part Formed via Variable Thickness Layer Cladding Deposition

2019 ◽  
Vol 46 (8) ◽  
pp. 0802003
Author(s):  
周显新 Xianxin Zhou ◽  
辛博 Bo Xin ◽  
巩亚东 Yadong Gong ◽  
张伟健 Weijian Zhang ◽  
张海权 Haiquan Zhang
Keyword(s):  
Mechanical Properties ◽  
Variable Thickness ◽  
Scanning Direction ◽  
Microstructure And Mechanical Properties ◽  
Thickness Layer

Improved Fourier terrain correction, Part II

Geophysics ◽  
1996 ◽  
Vol 61 (2) ◽  
pp. 365-372 ◽  
Author(s):  
Robert L. Parker
Keyword(s):  
Power Series ◽  
Variable Thickness ◽  
Grid Point ◽  
Main Idea ◽  
Terrain Correction ◽  
Potential Fields ◽  
Fourier Methods ◽  
Convergence Problems ◽  
Thickness Layer ◽  
Level Plane

Fourier methods for potential fields have always been developed with the simplification that the calculation surface is a level plane. The Fourier approach can be extended to deal with an uneven observation surface. I consider the case of terrain correction for gravity surveys, in which the attraction of a variable‐thickness layer is calculated at points on its upper surface. The main idea is to use a power series in topographic height that is then converted into a series of convolutions. To avoid convergence problems, a cylindrical zone around the observer must be removed from the Fourier treatment and its contribution computed directly. The resultant algorithm is very fast: in an example based on a recent survey, the new method is shown to be more than 300 times faster than a calculation based on summing contributions from a column of material under each topographic grid point.

THE SUPPORT BONDS RIGIDITY INFLUENCES ON THE CARRYING CAPACITY REDUCTION OF THE SHALLOW SHELLS ON A RECTANGULAR PLAN

2020 ◽  
Vol 92 (6) ◽  
pp. 3-12
Author(s):  
A.G. KOLESNIKOV ◽  
Keyword(s):  
Variable Thickness ◽  
Carrying Capacity ◽  
Geometric Nonlinearity ◽  
Progressive Collapse ◽  
Geometrically Nonlinear ◽  
Loss Of Stability ◽  
Shallow Shells ◽  
Capacity Reduction ◽  
Internal Forces ◽  
Hinged Support

Geometric nonlinearity shallow shells on a square and rectangular plan with constant and variable thickness are considered. Loss of stability of a structure due to a decrease in the rigidity of one of the support (transition from fixed support to hinged support) is considered. The Bubnov-Galerkin method is used to solve differential equations of shallow geometrically nonlinear shells. The Vlasov's beam functions are used for approximating. The use of dimensionless quantities makes it possible to repeat the calculations and obtain similar dependences. The graphs are given that make it possible to assess the reduction in the critical load in the shell at each stage of reducing the rigidity of the support and to predict the further behavior of the structure. Regularities of changes in internal forces for various types of structure support are shown. Conclusions are made about the necessary design solutions to prevent the progressive collapse of the shell due to a decrease in the rigidity of one of the supports.

scholarly journals Modulating the thermal and structural stability of gallenene via variation of atomistic thickness

2021 ◽  
Author(s):  
Stephanie Lambie ◽  
Krista G. Steenbergen ◽  
Nicola Gaston
Keyword(s):  
Molecular Dynamics ◽  
Ab Initio ◽  
Structural Stability ◽  
Variable Thickness

Using ab initio molecular dynamics, we show that a recently discovered form of 2D Ga—gallenene—exhibits highly variable thickness dependent properties.

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