Development of hybrid four-point bending test for determining mechanical properties of thin films using finite element method and response surface method

2009 ◽  
Author(s):  
K. Kinoshita
Keyword(s):  
Thin Films ◽  
Mechanical Properties ◽  
Finite Element Method ◽  
Finite Element ◽  
Response Surface ◽  
Response Surface Method ◽  
Bending Test ◽  
Four Point Bending ◽  
Surface Method ◽  
Four Point Bending Test

A Study about Wind Stresses of 4-Dish Parabolic Solar Collector System by Using FEM and Response Surface Method

2014 ◽  
Vol 915-916 ◽  
pp. 209-213
Author(s):  
Byeong Uk Song ◽  
Tae Il Seo ◽  
Youn Seung Jeong
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Central Composite Design ◽  
Response Surface ◽  
Response Surface Method ◽  
Solar Collector ◽  
Collector System ◽  
Surface Method ◽  
Central Composite ◽  
Maximum Stresses

This paper presented a study about maximum stresses acting on the 4-dish solar collector system, which caused by excessive wind. For this, Central Composite Design and Response Surface Method were used on the basis of maximum stresses calculated by Finite Element Method. VisualDOC was used for CCD (Central Composite Design) and RSM (Response Surface Method), and Ansys was used for FEM (Finite Element Method) analysis. 9 cases of CCD points were selected and FEM analyses were conducted at these points. Based on these results, response surface function was constructed to model maximum stresses as function of wind velocity and thickness of dish support bar. In order to evaluate RSM model, arbitrary point were selected, and maximum stresses calculated by RSM were compared with those calculated by FEM.

Tunnel Reliability Analysis Based on the Combination of Modified FOSM and Numerical Calculation Program

2014 ◽  
Vol 577 ◽  
pp. 1174-1181 ◽  
Author(s):  
Li Hong Chen ◽  
Xiao Bing Chai ◽  
Hai Zhu Fan
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Reliability Analysis ◽  
Response Surface ◽  
Response Surface Method ◽  
Complex Structure ◽  
Surface Method ◽  
First Order Second Moment ◽  
Second Moment Method ◽  
Element Method

Evaluate the reliability for the deformation of structure is a hard work. Usually stochastic finite element method or response surface method was adopted. In this paper, a new way by combining of numerical method and modified reliability analysis method is proposed. The modified first order second moment method (FOSM) was introduced and three examples are employed to verify the feasibility and the effectiveness of this method. The examples showed the modified FOSM had the advantage of faster convergence rate, higher calculation accuracy in comparison with FOSM, response surface method and optimization algorithm method. Combining finite element method program with modified FOSM method is applied to analyze the reliability index of deformation of a tunnel. The results showed this approach was a successful method to analyze the reliability of complex structure.

scholarly journals Geometry Effects in Four-Point Bending Test for Thin Sheet Studied by Finite Element Simulation

2016 ◽  
Vol 57 (3) ◽  
pp. 335-343 ◽  
Author(s):  
Xiaolong Dong ◽  
Hongwei Zhao ◽  
Lin Zhang ◽  
Hongbing Cheng ◽  
Jing Gao
Keyword(s):  
Finite Element ◽  
Finite Element Simulation ◽  
Thin Sheet ◽  
Bending Test ◽  
Four Point Bending ◽  
Element Simulation ◽  
Four Point Bending Test ◽  
Geometry Effects
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