Analytical investigation of the role of reinforcement in perpendicular beams of beam-column knee joints by 3D meso-scale model

2020 ◽  
Vol 210 ◽  
pp. 110347 ◽  
Author(s):  
Liyanto Eddy ◽  
Punyawut Jiradilok ◽  
Koji Matsumoto ◽  
Kohei Nagai
Keyword(s):  
Analytical Investigation ◽  
Knee Joints ◽  
Scale Model ◽  
Meso Scale

A novel synergistic multi-scale modeling framework to predict micro- and meso-scale damage behaviors of 2D triaxially braided composite

2021 ◽  
pp. 105678952110339
Author(s):  
Hongyong Jiang ◽  
Yiru Ren ◽  
Qiduo Jin
Keyword(s):  
Compressive Load ◽  
Scale Model ◽  
Modeling Framework ◽  
Braided Composite ◽  
Multi Scale ◽  
Scale Modeling ◽  
Bridge Model ◽  
Multi Scale Modeling ◽  
Transverse Damage ◽  
Meso Scale

A novel synergistic multi-scale modeling framework with a coupling of micro- and meso-scale is proposed to predict damage behaviors of 2D-triaxially braided composite (2DTBC). Based on the Bridge model, the internal stress and micro damage of constituent materials are respectively coupled with the stress and damage of tow. The initial effective elastic properties of tow (IEEP) used as the predefined data are estimated by micro-mechanics models. Due to in-situ effects, stress concentration factor (SCF) is considered in the micro matrix, exhibiting progressive damage accumulation. Comparisons of IEEP and strengths between the Bridge and Chamis’ theory are conducted to validate the values of IEEP and SCF. Based on the representative volume element (RVE), the macro properties and damage modes of 2DTBC are predicted to be consistent with available experiments and meso-scale simulation. Both axial and transverse damage mechanisms of 2DTBC under tensile or compressive load are revealed. Micro fiber and matrix damage accumulations have significant effects on the meso-scale axial and transverse damage of tows due to multi-scale coupling effects. Different from existing meso-/multi-scale models, the proposed multi-scale model can capture a crucial phenomenon that the transverse damage of tow is vulnerable to micro fiber fracture. The proposed multi-scale framework provides a robust tool for future systematic studies on constituent materials level to larger-scale aeronautical materials.

scholarly journals A Comparative Evaluation of a Mesoscale Model and Atmospheric Global Circulation Model for Air Quality Simulation: A Multiscale, Multisite Evaluation

2012 ◽  
Vol 2012 ◽  
pp. 1-15 ◽  
Author(s):  
P. Goswami ◽  
J. Baruah
Keyword(s):  
High Resolution ◽  
Mesoscale Model ◽  
Large City ◽  
Circulation Model ◽  
Urban Pollution ◽  
Atmospheric Pollutants ◽  
Scale Model ◽  
Global Circulation Model ◽  
Global Circulation ◽  
Meso Scale

Concentrations of atmospheric pollutants are strongly influenced by meteorological parameters like rainfall, relative humidity and wind advection. Thus accurate specifications of the meteorological fields, and their effects on pollutants, are critical requirements for successful modelling of air pollution. In terms of their applications, pollutant concentration models can be used in different ways; in one, short term high resolution forecasts are generated to predict and manage urban pollution. Another application of dynamical pollution models is to generate outlook for a given airbasin, such as over a large city. An important question is application-specific model configuration for the meteorological simulations. While a meso-scale model provides a high-resolution configuration, a global model allows better simulation of large-sale fields through its global environment. Our objective is to comparatively evaluate a meso-scale atmospheric model (MM5) and atmospheric global circulation model (AGCM) in simulating different species of pollutants over different airbasins. In this study we consider four locations: ITO (Central Delhi), Sirifort (South Delhi), Bandra (Mumbai) and Karve Road (Pune). The results show that both the model configurations provide comparable skills in simulation of monthly and annual loads, although the skill of the meso-scale model is somewhat higher, especially at shorter time scales.

Coupled C-M meso-scale model for ASR expansion in concrete

2018 ◽  
pp. 363-370
Author(s):  
J. Liaudat ◽  
C.M. López ◽  
I. Carol
Keyword(s):  
Scale Model ◽  
Meso Scale

scholarly journals BUDAYA ORGANISASI SEBAGAI VARIABEL PREDIKTOR TERHADAP ORGANIZATIONAL CITIZENSIHP BEHAVIOR PADA KARYAWAN KOPERASI

2020 ◽  
Vol 5 (1) ◽  
pp. 8-19
Author(s):  
Marhisar Simatupang
Keyword(s):  
Organizational Culture ◽  
Sampling Technique ◽  
Research Data ◽  
Scale Model ◽  
Citizenship Behavior ◽  
P Value ◽  
Organization Citizenship Behavior ◽  
Item Data ◽  
Regression Correlation

This study aims to determine the role of organizational culture on organization citizenship behavior in cooperative employees in Medan. The subjects of this study were 80 employees from three coorperatives in the Medan city. This research uses incidental sampling technique. Reserch data were obtained using two scales in the Likert scale model, namely organizational culture and organization citizenship behavior (OCB). The reliability of the scale of the organizational culture is 0.789 out of items and the reliability of the organization citizenship behavior (OCB) scale is 0.727 out of 17 items. Research data were analyzed using simple regression correlation with the SPSS windows version 16.0 program and coefficient value obtained with an R coefficient of 0.532 with a P value of significance of 0.000 < 0.05 with an R coefficient of 0.532, wich means that the organizational culture’s contribution to organization citizenship behavior (OCB) was 28.3% with a regression equation Y= 11.816 + 0.363. The result means that there is a positive and significant role between organizational culture to organization citizenship behavior (OCB) in coorperative employee in Medan. Keywords: organizational culture and organization citizenship behavior (OCB). Penelitian ini bertujuan untuk mengetahui peran budaya organisasi terhadap organization citizenship behavior (OCB) pada karyawan koperasi di kota Medan Kecamatan Medan Tuntungan. Subjek penelitian ini adalah 80 orang karyawan dari tiga koperasi yang ada di kecamatan Medan Tuntungan. Penelitian ini menggunakan teknik sampling aksidental. Data penelitian diperoleh dengan menggunakan dua skala dalam model skala Likert, yaitu skala budaya organisasi dan organization citizenship behavior (OCB). Reliabilitas skala budaya organisasi adalah 0,798 dari 22 item dan reliabilitas skala organization citizenship behavior (OCB) adalah 0,727 dari 17 item. Data dalam penelitian ini dianalisis dengan menggunakan korelasi regresi sederhana dengan program SPSS windows versi 16.0 dan diperoleh nilai koefisien dengan koefisien R sebesar 0.532 dengan nilai p signifikansi sebesar 0.000 < 0.05 dengan koefisien R sebesar 0.532, yang memiliki arti bahwa kontribusi budaya organisasi terhadap OCB sebesar 28.3% dengan persamaan regeresi Y = 11.816 + 0.363. Hasil ini berarti ada peran yang positif dan signifikan antara budaya organisasi terhadap organization citizenship behavior (OCB) pada anggota Koperasi di kota Medan. Kata Kunci: Budaya organisasi, organization citizenship behavior.

Case-II diffusion and solvent-polymer films drying: A meso-scale model

2007 ◽  
Vol 77 (4) ◽  
pp. 48002 ◽  
Author(s):  
M Souche ◽  
D Long
Keyword(s):  
Polymer Films ◽  
Scale Model ◽  
Meso Scale
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