نتایج جستجو برای: first order reliability method
تعداد نتایج: 3512295 فیلتر نتایج به سال:
abstract: postmethod is a newly developed pedagogy which as an alternative to method rejects the notion of good or bad methods and the concept of best method that can be generalized and appropriate for all contexts. instead, it treats each context as unique and one of a kind which cant be compared with other cases. this study is a postmethod-oriented one which investigates whether and how far t...
Predicting the peak distribution of stochastic stress responses is critical for various fatigue analysis problems with stochastic uncertainties. In this paper, a method, based on the first-order reliability method (FORM), is proposed for estimating the peak distribution of stochastic response. The method linearizes the stochastic process at the associated most probable point. After linearizatio...
In historical buildings, the load bearing capacity is often doubtful due to deterioration processes or external actions. To decide whether or not these structural elements need to be strengthened, a probabilistic method is searched for. Indeed, as none of the parameters is known exactly material characteristics, imposed loads due to the new or altered destination of the building, uniformity of ...
Reliability Analysis of Timber Structure Design of Poplar Lumber with Nondestructive Testing Methods
The safety of timber structure design based on the predicted Modulus of Rupture (MOR) of poplar lumber with nondestructive methods is presented in this paper. Dynamic Modulus of Elasticity (MOE) of poplar lumber was measured with three different nondestructive methods, and static MOE and MOR were obtained by a static bending test. The regression relationship between various MOE and MOR was eval...
detention rockfill dams are an easy and common tool for flood control. due to their coarse pores, the flow in void spaces is turbulent and non-darcy. different relationships introduced by researchers are used to define the hydraulics of the flow within the rockfill materials. the present research is aimed at gaining a better understanding of the differ-ence among these relationships and the sou...
the purpose of this study was to investigate how english language teachers in mashhad who teach students in the pre-university cycle perceived the impact of the efltee on their teaching. the target population was nearly all pre-university english language teachers in seven districts of mashhad in the scholastic year 2008/2009. a survey questionnaire which consisted of (36) likert type items, wa...
ABSRACT: A practical procedure for reliability analysis involving correlated nonnormals was described in Low & Tang (1997), using object-oriented constrained optimization in the ubiquitous spreadsheet platform. Numerical derivatives and iterative search for the design point were automatic. The objective of this paper is to further illustrate the 1997 procedure for two geotechnical problems with...
The real-world applications addressing the nonlinear functions of multiple variables could be implicitly assessed through structural reliability analysis. This study establishes an efficient algorithm for resolving highly nonlinear structural reliability problems. To this end, first a numerical nonlinear optimization algorithm with a new simple filter is defined to locate and estimate the most ...
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