کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7195653 | 1468232 | 2015 | 16 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Integration of model verification, validation, and calibration for uncertainty quantification in engineering systems
ترجمه فارسی عنوان
ادغام مدل تایید، اعتبارسنجی و کالیبراسیون برای اندازه گیری عدم قطعیت در سیستم های مهندسی
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کلمات کلیدی
سیستم چند سطح، عدم قطعیت اندازه گیری، شبکه بیزی، کالیبراسیون، اعتبار سنجی، تایید،
موضوعات مرتبط
مهندسی و علوم پایه
سایر رشته های مهندسی
مهندسی مکانیک
چکیده انگلیسی
This paper proposes a Bayesian methodology to integrate model verification, validation, and calibration activities for the purpose of overall uncertainty quantification in different types of engineering systems. The methodology is first developed for single-level models, and then extended to systems that are studied using multi-level models that interact with each other. Two types of interactions amongst multi-level models are considered: (1) Type-I, where the output of a lower-level model (component and/or subsystem) becomes an input to a higher level system model, and (2) Type-II, where parameters of the system model are inferred using lower-level models and tests (that describe simplified components and/or isolated physics). The various models, their inputs, parameters, and outputs, experimental data, and various sources of model error are connected through a Bayesian network. The results of calibration, verification, and validation with respect to each individual model are integrated using the principles of conditional probability and total probability, and propagated through the Bayesian network in order to quantify the overall system-level prediction uncertainty. The proposed methodology is illustrated with numerical examples that deal with heat conduction and structural dynamics.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Reliability Engineering & System Safety - Volume 138, June 2015, Pages 194-209
Journal: Reliability Engineering & System Safety - Volume 138, June 2015, Pages 194-209
نویسندگان
Shankar Sankararaman, Sankaran Mahadevan,