reliability analysis with strurelstrurel.com/files_blog/uncecomp_2017_strurel.pdf · 2017. 7....
TRANSCRIPT
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– structural reliability
Reliability Analysis with Strurel
Wolfgang Betz, Iason Papaioannou, Holger Heidkamp,
Stephan Gollwitzer, Daniel Straub
June 15, UNCECOMP 2017, Rhodes Island, Greece
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Structure of the presentation …
… follows workflow of a reliability analysis
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Reliability analysis – Overview
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What type of problem do we need to solve?
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Uncertain parameters of the model – probabilistic model
normal
lognormal
exponential
gammabeta
gumbel (max)
frechet (max)
weibull (min)
shifted lognormal
rectangular
rayleigh
standard student t
trapezoid
frechet (min)
gumbel (min)
inverse gaussbirnbaum/saunders
weibull (max)
halfnormal
logistic
laplace
pareto
chi-square
4-para. lognormal
hermite
nevillestudent
fisher fshifted gamma
cauchy
Rosenblatt
Nataf
Hermite
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Computational model & limit-state function
C / C++
Fortrang(x)
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Example: Limit-state function in Matlab
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What is our target of interest?
𝒑𝒇 = 𝐏𝐫 𝑭𝒂𝒊𝒍𝒖𝒓𝒆sensitivities
safety factors
𝜸𝑬, 𝜸𝑸, 𝜸𝒇, 𝜸𝑹
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Select a reliability method
Monte Carlo Line sampling
Directional sampling
Subset simulation
FORM / SORM
Importance samplingAdaptive sampling
Mean value frist order
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Example: Reliability based optimization
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Kernel of Strurel is embedded in external applications
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is …
Software for reliability analysis
User-friendly
Reliable & Robust
Technically strong
Expandable
Linkable
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Thank you for your attention !
www.strurel.com