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Comparison and Validation of Creep-Buckling Analysis Methods
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STANDARD published on 2008
Designation standards: ASME STP-PT-022:2008
Publication date standards: 2008
SKU: NS-999398
The number of pages: 32
Approximate weight : 96 g (0.21 lbs)
Country: American technical standard
Category: Technical standards ASME
View Additional Information This report provides comparisons of creep-buckling calculations and provides guidance on approximate methods which are feasible for design. This report includes a discussion of the various creep models, presents creep buckling analysis techniques, and provides several comparative example calculations.
The techniques discussed in this report include: Baseline analysis. Finite element creep analysis with different creep models and full non-linear strain-displacement (geometrical) analysis. Critical strain technique. Elastic buckling strain defines the creep buckling strain. Tangent/secant modulus approaches. Combinations of tangent and secant moduli of the isochronous stress-strain curve are used in calculations that reduce to elastic buckling calculations in the elastic case. Use of an isochronous stress-strain curve in a limit/instability analysis of the imperfect structure. An instability (buckling) analysis would be in principle the same as Technique 3, and should generate the same answer. Adding plastic collapse as a failure mode ensures that the yield strength of the structure is not exceeded. This analysis therefore reflects the failure modes which are covered by the baseline technique.
Desc: STP-PT-022
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