Computation of stochastic wellhead protection zones by combining the first-order second-moment method and Kolmogorov backward equation analysis

2000 ◽  
Vol 237 (3-4) ◽  
pp. 127-146 ◽  
Author(s):  
H. Kunstmann ◽  
W. Kinzelbach
Keyword(s):  
Moment Method ◽  
Second Moment ◽  
Protection Zones ◽  
First Order ◽  
Wellhead Protection ◽  
Equation Analysis ◽  
First Order Second Moment ◽  
Backward Equation ◽  
Second Moment Method

Reliability analysis of a structural element based on the Advanced First-Order-Second-Moment Method.

1985 ◽  
Vol 51 (472) ◽  
pp. 2811-2816
Author(s):  
Yoshisada MUROTSU ◽  
Masaaki YONEZAWA ◽  
Hiroo OKADA ◽  
Satoshi MATSUZAKI ◽  
Toshiki MATSUMOTO
Keyword(s):  
Reliability Analysis ◽  
Moment Method ◽  
Structural Element ◽  
Second Moment ◽  
First Order ◽  
First Order Second Moment ◽  
Second Moment Method

A study on Modified Advanced First Order Second Moment method for Beam-to-Column Connections

2013 ◽  
Author(s):  
SooMi Shin ◽  
◽  
DongEun Lee ◽  
HyeMin Kim ◽  
HyunJung Park ◽  
...  
Keyword(s):  
Moment Method ◽  
Second Moment ◽  
First Order ◽  
First Order Second Moment ◽  
Second Moment Method

Reliability Assessment of Corrosion Initiation of Harbor Concrete Structure Using FOSM

2008 ◽  
Vol 385-387 ◽  
pp. 621-624 ◽  
Author(s):  
Sang Hun Han ◽  
Woo Sun Park
Keyword(s):  
Failure Probability ◽  
Concrete Structure ◽  
Moment Method ◽  
Probabilistic Approach ◽  
Chloride Diffusion ◽  
Second Moment ◽  
First Order ◽  
Corrosion Initiation ◽  
First Order Second Moment ◽  
Second Moment Method

Due to the uncertainty of variables in durability model, the probabilistic approach is increasing. Monte Carlo Simulation (MCS) is an easily accessible method, but requires a lot of repeated operations. This paper evaluated the effectiveness of First Order Second Moment method (FOSM), which is more convenient and time saving method than MCS, to predict the corrosion initiation in harbor concrete structure. Mean Value First Order Second Moment method (MV FOSM) and Advanced First Order Second Moment method (AFOSM) are applied to the error function solution of Fick's second law modeling chloride diffusion. Reliability index and failure probability based on MV FOSM and AFOSM are compared with the results by MCS. The comparison showed that AFOSM and MCS predict similar reliability indexes and MV FOSM underestimates the probability of corrosion initiation by chloride attack. Also, the sensitivity of variables in durability model to failure probability was evaluated on the basis of AFOSM. The results showed that AFOSM is a simple and efficient method to estimate the possibility of corrosion initiation in harbor concrete structures.

Reliability Analysis of Wood-Plastic Structural Plates

2011 ◽  
Vol 101-102 ◽  
pp. 1074-1077
Author(s):  
Gui Wen Yu
Keyword(s):  
Structural Material ◽  
Reliability Analysis ◽  
Modulus Of Elasticity ◽  
Moment Method ◽  
Bending Strength ◽  
Second Moment ◽  
First Order ◽  
First Order Second Moment ◽  
Second Moment Method

The wood-plastic structural plates, which were made of polyethylene (PE) and poplar powder, were used in decking as a structural material. It is of great significance to analyze the material reliability for the safety in service. In this paper, the modulus of elasticity and static bending strength of specimens were obtained through test, the first order second moment method (FOSM) was used to analyze the reliability of the wood-plastic structural plates. The result showed that the wood-plastic structural plates have a better reliability, and the reliability of the wood-plastic structural plates was related to the thickness of the specimens.

Sign in / Sign up

Export Citation Format

Share Document