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Volume 25 Issue 1
Feb.  2004
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LIU Xiao-long, JIANG Jia-ling. “Primary-Least Structure” Method as a Stress Categorization Tool for Design by Analysis[J]. Nuclear Power Engineering, 2004, 25(1): 70-73.
Citation: LIU Xiao-long, JIANG Jia-ling. “Primary-Least Structure” Method as a Stress Categorization Tool for Design by Analysis[J]. Nuclear Power Engineering, 2004, 25(1): 70-73.

“Primary-Least Structure” Method as a Stress Categorization Tool for Design by Analysis

  • Received Date: 2003-02-25
  • Rev Recd Date: 2003-04-07
  • Available Online: 2025-07-29
  • Publish Date: 2004-02-15
  • A new valid method of stress categorization- “primary-least structure method”(PLSM) is proposed. The method is based on the stress-linearized technique and elastic finite element analyses (FEA). During the classification, the primary stresses (Pm + Pb) are evaluated in the “primary least structure”, while other stresses (PL+Q+F) in the original structure. By removing the “ruinous constrains” from the original structure, the lower primary stress is extracted, from which the greater allowable pressure approaching the lower-bound limit load can be obtained. An example is presented to demonstrate the application of the “primary-least structure” method as a stress categorization tool. The result shows that a higher allowable pressure can be obtained by this method, compared with the procedure without stress-linearized technique and the approach given by present Code.

     

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