scholarly journals MULTI-SCALE ANALYSIS METHOD FOR PARTIALLY IMPROVED GROUNDS BY USING A NEWLY PROPOSED NONLINEAR ELASTIC CONSTITUTIVE MODEL

2010 ◽  
Vol 66 (1) ◽  
pp. 145-155
Author(s):  
Akira ISHIKAWA ◽  
Kenjiro TERADA ◽  
Takashi KYOYA ◽  
Yasuhiro SHAMOTO
Keyword(s):  
Constitutive Model ◽  
Scale Analysis ◽  
Analysis Method ◽  
Multi Scale ◽  
Nonlinear Elastic ◽  
Multi Scale Analysis

1222 Multi-scale analysis method on bone structure considering the osteosis

2005 ◽  
Vol 2005.5 (0) ◽  
pp. 185-186
Author(s):  
Yuichi SHOYAMA ◽  
Ryosuke MATSUMOTO ◽  
Michihiko NAKAGAKI
Keyword(s):  
Bone Structure ◽  
Scale Analysis ◽  
Analysis Method ◽  
Multi Scale ◽  
Multi Scale Analysis

Prediction of SCC Initiation in Weld Components by Multi-Scale Analysis Incorporating Crystal Plasticity

2010 ◽  
Author(s):  
Masahito Mochizuki ◽  
Yoshiki Mikami
Keyword(s):  
Residual Stress ◽  
Crystal Orientation ◽  
Microscopic Model ◽  
Macroscopic Model ◽  
Scale Analysis ◽  
Analysis Method ◽  
Multi Scale ◽  
Microscopic Models ◽  
Multi Scale Analysis ◽  
Good Agreement

A multi-scale analysis method of microscopic stress is proposed to predict the occurrence of stress corrosion cracking (SCC) in the welded components in power plants. The method includes a macroscopic model and microscopic models. Calculation of the stress was first performed in the macroscopic model. Subsequent to this calculation, simulation of the microscopic model was conducted to evaluate the microscopic stress on the scale of the grains and microstructure. Then, the nodal temperatures and nodal displacements were transferred from the macroscopic model to the microscopic model as boundary conditions. The proposed multi-scale analysis was used to evaluate the weld residual stress of a bead-on-plate weld model to demonstrate the validity of the method. Good agreement was obtained between the macroscopic and microscopic models in nodal temperature, nodal displacement, and in the residual stress distribution. Following the bead-on-plate model, the multi-scale analysis method was applied to the model of an SCC test specimen of type 600 Nickel-based alloy. Crystal plasticity and inhomogeneous grain shapes were introduced into the microscopic model to consider the effect of crystal orientation. The crystal orientation was measured by electron backscattering pattern (EBSP) technique and applied to the microscopic model. The stress concentration at the grain boundaries was shown by the multi-scale analysis. In the simulated SCC tests, cracks were observed in the grain boundaries. The locations where microscopic stress concentrations occurred in the multi-scale analysis were in good agreement with the locations of cracks observed in the SCC test. The proposed multi-scale analysis method of microscopic stress distribution is thus applicable to the prediction of the locations of stress corrosion cracks.

2514 A multi-scale analysis method for electro-chemo-mechanical behavior involving sintering of porous micro structure

2013 ◽  
Vol 2013.26 (0) ◽  
pp. _2514-1_-_2514-2_
Author(s):  
Kenjiro TERADA ◽  
Shinsuke TAKASE ◽  
Ken TAKAHASHI ◽  
Satoshi WATANABE ◽  
Tatsuya KAWADA
Keyword(s):  
Mechanical Behavior ◽  
Scale Analysis ◽  
Analysis Method ◽  
Micro Structure ◽  
Multi Scale ◽  
Multi Scale Analysis

scholarly journals Multi-scale analysis method of underwater polarization imaging

2018 ◽  
Vol 67 (5) ◽  
pp. 054202
Author(s):  
Han Ping-Li ◽  
Liu Fei ◽  
Zhang Guang ◽  
Tao Yu ◽  
Shao Xiao-Peng
Keyword(s):  
Scale Analysis ◽  
Analysis Method ◽  
Polarization Imaging ◽  
Multi Scale ◽  
Multi Scale Analysis

scholarly journals Multi-Scale Energy Analysis Method during Automated Fibre Placement Process

2017 ◽  
Vol 26 (4) ◽  
pp. 096369351702600
Author(s):  
Shouzheng Sun ◽  
Zhenyu Han ◽  
Hongya Fu
Keyword(s):  
Classical Mechanics ◽  
Advanced Technology ◽  
Transfer Model ◽  
Coupling Mechanism ◽  
Scale Analysis ◽  
Analysis Method ◽  
Manufacturing Defects ◽  
Multi Scale ◽  
Composite Mechanics ◽  
Multi Scale Analysis

Automated fibre placement (AFP) is an advanced technology for composite lay-up. However, analysis on mechanical properties used by experiments or macroscopic theories during AFP process suffers from some restrictions, because multi-scale effect of laying tows and their manufacturing defects could not be considered. This contribution proposes a novel anti-sequential multi-scale analysis method based on concurrent/sequential multi-scale analysis method. In order to establish a coupling mechanism among different scales, multi-scale energy transfer model is presented and emphatically analysed through composite mechanics and classical mechanics. Furthermore, taking a Bisphenol A epoxy matrix prepreg tow as an example, an application is employed to verify the feasibility of the method and model. Finally, application field for processing optimization is introduced and prospected.

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