ASME VVUQ 10.2-2021 pdf download

ASME VVUQ 10.2-2021 pdf download.The Role of Uncertainty Quantification in Verification and Validation of Computational Solid Mechanics Models.
General. ASME Standards are developed and maintained with the intent to represent the consensus of concerned interests. As such, users of this Standard may interact with the Committee by requesting interpretations, proposing revisions or a case, and attending Committee meetings. Correspondence should be addressed to: Secretary, VVUQ Standards Committee The American Society of Mechanical Engineers Two Park Avenue New York, NY 10016-5990 http://go.asme.org/Inquiry Proposing Revisions. Revisions are made periodically to the Standard to incorporate changes that appear necessary or desirable, as demonstrated bythe experience gained from the application ofthe Standard. Approved revisions will be published periodically. This Standard is always open for comment, and the Committee welcomes proposals for revisions. Such proposals should be as specificas possible, citingthe paragraph number(s), the proposed wording, and adetailed descriptionofthe reasons for the proposal, including any pertinent documentation. Proposing aCase. Cases maybe issued to provide alternative rules when justified, to permitearlyimplementation of an approved revision when the need is urgent, or to provide rules notcovered by existing provisions. Cases are effective immediately upon ASME approval and shall be posted on the ASME Committee web page. Requests for Cases shall provide a Statement of Need and Background Information. The request should identify the Standard and the paragraph, figure, or table number(s), and be written as a Question and Reply in the same format as existing Cases. Requests for Cases should also indicate the applicable edition(s) ofthe Standard to which the proposed Case applies. Interpretations. Upon request, the VVUQ Standards Committee will render an interpretation ofany requirement of the Standard. Interpretations can only be rendered in response to a written request sent to the Secretary ofthe VVUQ Standards Committee.
1 PURPOSE AND SCOPE 1.1 Purpose and Motivation The purpose ofthis Standard is to expand upon the important role ofuncertainty quantification (UQ) in verification, validation, and uncertainty quantification (VVUQ), as outlined in Figure 1.1-1. UQ plays an important part in each ofthe “Modeling and Simulation” and “Physical Experimentation” branches illustrated in the figure, ultimately quantifying the uncertainties in the “Simulation Results” and “Experimental Results” generating the “Simulation Outputs” and “Experi- mental Outputs.” A detailed description of this figure is provided in ASME V&V 10-2019. Consistent with the purpose ofASME V&V 10-2019, the motivation for developing ASME VVUQ 10.2 is the need for a common language and process ofUQin computational solid mechanics (CSM), particularlyas itmayrelate to howmodel developers perform UQ as well as how they subsequently communicate results, conclusions, and recommendations to a decision-maker. Adecision-makermaybe anyindividual orrepresentative body, such as areviewpanel, deemedrespon- sible fordeterminingifa model is acceptable forits intended uses. The decision-makermayalso be a customerrelyingon model predictions to inform a decision. 1.2 Objectives and Scope 1.2.1 Objectives. The objectives of this Standard are to (a) define and clarify the role of UQ as part of the VVUQ process (b) provide guidance for the use of UQ in VVUQ activities (c) acknowledge the importance of UQ in decision-making 1.2.2 Scope. The scope of this Standard includes the following: (a) sources and types of uncertainty and how they can be treated in the VVUQ process (section 2) (b) quantification and propagation of uncertainties (section 3) (c) uncertainties in validation experiments (section 4) (d) uncertainties in model validation assessment (section 5) (e) revisions to the model and experiments (section 6) (f) uncertainties in hierarchical models (section 7)
The model form f(·) itselfincludes additional quantities used to relate the output variable to the input variable(s) by means ofmathematical operations. These quantities are referredto as modelparameters. While some parameters maybe physical ormathematical constants, the model parameters are typicallyquantities subjectto variation, and therefore are generallyuncertain. Whena nonconstantparameterin a given model has physical meaning(para. 2.1), itmaybe an input variable or an output variable in another model. In physics-based models, the model parameters typicallypossess definitive physical meaning. In empirical models, the model parameters mayormaynothave physical meaning. This distinctionis verycommonandleads to differences inthe process ofuncertaintyquantificationdue to the differences inthe primarysources ofuncertaintyassociatedwiththe two types of models, as further discussed in para. 3.1.