A PROPOSED METHODOLOGY FOR STRAIN BASED FAILURE CRITERIA

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This paper proposes an alternative methodology to determine the failure criteria for use in dynamic simulations of radioactive material shipping packages in the events of hypothetical accident conditions. The current stress failure criteria defined in the Nuclear Regulatory Guide 7.6 [1] and the ASME Code, Section III, Appendix F [2] for Level D Service Loads are based on the ultimate strength of uniaxial tensile test specimen rather than on the material fracture in the state of multi-axial stresses. On the other hand, the proposed strain-based failure criteria are directly related to the material failure mechanisms in multi-axial stresses. In addition, ... continued below

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Wu, T May 1, 2008.

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This paper proposes an alternative methodology to determine the failure criteria for use in dynamic simulations of radioactive material shipping packages in the events of hypothetical accident conditions. The current stress failure criteria defined in the Nuclear Regulatory Guide 7.6 [1] and the ASME Code, Section III, Appendix F [2] for Level D Service Loads are based on the ultimate strength of uniaxial tensile test specimen rather than on the material fracture in the state of multi-axial stresses. On the other hand, the proposed strain-based failure criteria are directly related to the material failure mechanisms in multi-axial stresses. In addition, unlike the stress-based criteria, the strain-based failure criteria are applicable to the evaluation of cumulative damages caused by the sequential loads in the hypothetical accident events as required by the Nuclear Regulatory Guide 7.8 [4].

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  • 2008 ASME Pressure Vessels and Piping Conference

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  • Report No.: WSRC-STI-2008-00230
  • Grant Number: DE-AC09-96SR18500
  • Office of Scientific & Technical Information Report Number: 929474
  • Archival Resource Key: ark:/67531/metadc895378

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  • May 1, 2008

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  • Sept. 27, 2016, 1:39 a.m.

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  • Dec. 12, 2016, 12:47 p.m.

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Wu, T. A PROPOSED METHODOLOGY FOR STRAIN BASED FAILURE CRITERIA, article, May 1, 2008; [Aiken, South Carolina]. (digital.library.unt.edu/ark:/67531/metadc895378/: accessed September 21, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.