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首页> 外文期刊>Computer Methods in Applied Mechanics and Engineering >Computational modeling issues and methods for the 'regulatory problem' in engineering - Solutions to the structural dynamics and static frame problems
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Computational modeling issues and methods for the 'regulatory problem' in engineering - Solutions to the structural dynamics and static frame problems

机译:工程中“调节问题”的计算建模问题和方法-结构动力学和静态框架问题的解决方案

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摘要

Many of the problems addressed through engineering analysis include a set of regulatory (or other) probabilistic requirements that must be demonstrated with some degree of confidence through the analysis. Problems cast in this environment can pose new challenges for computational analyses in both model validation and model-based prediction. The "regulatory problems" given for the "Sandia challenge problems exercise", while relatively simple, provide an opportunity to demonstrate methods that address these challenges. This paper describes and illustrates methods that can be useful in analysis of the regulatory problem. Specifically, we discuss: (1) an approach for quantifying variability and uncertainty separately to assess the regulatory requirements and provide a statement of confidence; and (2) a general validation metric to focus the validation process on a specific range of the predictive distribution (the predictions near the regulatory threshold).These methods are illustrated using the challenge problems. Solutions are provided for both the static frame and structural dynamics problems.
机译:通过工程分析解决的许多问题包括一组监管(或其他)概率要求,必须通过分析以一定的信心证明这些要求。在此环境中投放的问题可能会对模型验证和基于模型的预测中的计算分析提出新的挑战。为“ Sandia挑战问题练习”提供的“监管问题”虽然相对简单,但却提供了一个机会来展示解决这些挑战的方法。本文描述并说明了可用于分析监管问题的方法。具体来说,我们讨论:(1)一种分别量化可变性和不确定性的方法,以评估监管要求并提供信心声明; (2)将验证过程集中在特定范围的预测分布(接近监管阈值的预测)上的通用验证度量。使用挑战性问题说明了这些方法。提供了针对静态框架和结构动力学问题的解决方案。

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