Comparative study on measurement of elastic constants of wood-based panels using modal testing: choice of boundary conditions and calculation methods

2017 ◽  
Vol 63 (5) ◽  
pp. 523-538 ◽  
Author(s):  
Jianhui Zhou ◽  
Ying Hei Chui ◽  
Meng Gong ◽  
Lin Hu
Keyword(s):  
Boundary Conditions ◽  
Comparative Study ◽  
Elastic Constants ◽  
Modal Testing ◽  
Calculation Methods

scholarly journals Comparative study on calculation methods of wave force on breast wall in Chinese, Japanese and European codes

2020 ◽  
Vol 531 ◽  
pp. 012062
Author(s):  
Huang Jian ◽  
Zhang Xiu-min ◽  
Bing Xiao ◽  
Dong Li-hong ◽  
Peng Yun
Keyword(s):  
Comparative Study ◽  
Wave Force ◽  
Calculation Methods ◽  
Breast Wall

Development of a New Simulation Technique Based on the Modal Approximation for Fluid Transients in Complex Pipeline Systems With Time-Variant Nonlinear Boundary Conditions

2006 ◽  
Vol 129 (6) ◽  
pp. 791-798 ◽  
Author(s):  
E. Kojima ◽  
T. Yamazaki ◽  
M. Shinada
Keyword(s):  
Boundary Conditions ◽  
Nonlinear Boundary ◽  
Safety Valve ◽  
Nonlinear Boundary Conditions ◽  
Simulation Technique ◽  
Nonlinear Relationship ◽  
Calculation Methods ◽  
Pipeline Systems ◽  
Fluid Transients ◽  
Modal Approximation

A new simulation technique called the system modal approximation method (SMA) for fluid transients in complex pipeline systems has been proposed. The superiority of this technique compared to other existing methods has been verified. Thus far, however, detailed considerations have been limited to pipelines having elementary boundary conditions. In the present paper, for the generalization of the SMA method, calculation methods are newly proposed for the case in which the boundary conditions are given by the time-variant nonlinear relationship between pressure and flow rate, such as the conditions in a safety valve, and its usefulness is verified by comparison to experimental measurements.

A comparative study of the vibrational effects on the boundary conditions of a slender beam

2019 ◽  
Author(s):  
A. R. Bahari ◽  
M. A. Yunus ◽  
M. N. Abdul Rani ◽  
W. I. I. Wan Iskandar Mirza ◽  
Haizuan A. R.
Keyword(s):  
Boundary Conditions ◽  
Comparative Study

A comparative study of boundary conditions for the density-based solvers in the framework of OpenFOAM

2018 ◽  
Vol 172 ◽  
pp. 284-300
Author(s):  
Yidao Dong ◽  
Xiaogang Deng ◽  
Xiang Gao ◽  
Min Xiong ◽  
Guangxue Wang
Keyword(s):  
Boundary Conditions ◽  
Comparative Study

Effect of an elastically restrained boundary on SV-wave radiation patterns

1968 ◽  
Vol 58 (2) ◽  
pp. 497-520
Author(s):  
Y. T. Huang
Keyword(s):  
Boundary Condition ◽  
Wave Propagation ◽  
Free Boundary ◽  
Boundary Conditions ◽  
Elastic Wave ◽  
Solid Earth ◽  
Elastic Constants ◽  
Wave Radiation ◽  
Free Boundary Conditions ◽  
Elastically Restrained

Abstract In the solution of elastic wave propagation equations applied to solid earth, it is customarily assumed that free boundary conditions are satisfied at a surface which is in contact with the atmosphere. Situations which depart from this boundary condition have now been studied for arbitrary combinations of the Lamé elastic constants. The solutions are given for a homogeneous, isotropic half space.

A Comparative Study of Constrained and Unconstrained Melting Inside a Sphere

2020 ◽  
Author(s):  
Rohit Kothari ◽  
Shripad T. Revankar ◽  
Santosh K. Sahu ◽  
Shailesh I. Kundalwal
Keyword(s):  
Boundary Conditions ◽  
Comparative Study ◽  
Computational Analysis ◽  
Computational Results ◽  
Melting Fraction ◽  
Initial And Boundary Conditions ◽  
Spherical Capsule ◽  
Good Agreement

Abstract Present study is focused on the computational analysis of melting of PCM inside the spherical capsule. Both unconstrained and constrained melting is analyzed for the constant PCM volume and similar initial and boundary conditions. RT27 is chosen as the PCM for this study. Air is considered at the top of PCM inside the spherical capsule. Results are validated with the existing experimental and computational results and found to be in good agreement. Results obtained from present study are compared for the melting fraction, pattern and time. Composite diagrams are presented for the streamline and temperature contours.

scholarly journals Comparative Study of Calculation Models for the Fire Resistance of Hollow Steel Columns Filled with Concrete

2020 ◽  
Author(s):  
Farid Fellah
Keyword(s):  
Comparative Study ◽  
Computer Program ◽  
Fire Resistance ◽  
Applied Load ◽  
Computer Code ◽  
Test Results ◽  
Calculation Methods ◽  
Steel Columns ◽  
Design Engineers ◽  
The Comparative Study

Various calculation methods are proposed in codes for the evaluation of fire resistance of hollow steel columns filled with concrete, but the use of some of them may be very tedious for design engineers, and it may be interesting to have more practical tools at their disposal. In the comparative study presented here, three methods based on different procedures are investigated. Kodur’s method is a set of formulas allowing to calculate the fire resistance or the maximum applied load. Potfire is a computer program for which a user’s manual is provided and clean instructions describe how to introduce the data. SAFIR is a non-linear computer code that can simulate the behavior of structures under fire conditions. Comparisons are made between the results obtained by the three methods and test results. The differences are analyzed, and the influence of some parameters is examined. From the results obtained in this comparative study, it is possible to say in which cases each method can be used.

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