A key problem in engineering applications of “design by analysis” approach is how to decompose a total stress field obtained by the finite element analysis into different stress categories defined in the ASME Code III and VIII-2. In this paper, we suggest a two-step approach (TSA) of stress classification and a primary structure method (PSM) for identification of primary stress. Together with the equivalent linearization method (ELM), the stress classification problem is well solved. Some important concepts and ideas discussed by Lu and Li [Lu, M. W., and Li, J. G., 1986, ASME PVP-Vol. 109, pp. 33–37; Lu, M. W., and Li, J. G., 1996, ASME PVP-Vol. 340, pp. 357–363] are introduced. They are self-limiting stress, multi-possibility of stress decomposition, classification of constraints, and primary structures. For identification of peak stress, a modified statement of its characteristic and a “1/4 thickness criterion” are given. [S0094-9930(00)00201-8]
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February 2000
Technical Papers
Two-Step Approach of Stress Classification and Primary Structure Method
Ming-Wan Lu,
Ming-Wan Lu
Department of Engineering Mechanics, Tsinghua University, Beijing 100084, P.R. China
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Yong Chen,
Yong Chen
Department of Engineering Mechanics, Tsinghua University, Beijing 100084, P.R. China
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Jian-Guo Li
Jian-Guo Li
China National Standards Committee on Pressure Vessels, Beijing 100088, P.R. China
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Ming-Wan Lu
Department of Engineering Mechanics, Tsinghua University, Beijing 100084, P.R. China
Yong Chen
Department of Engineering Mechanics, Tsinghua University, Beijing 100084, P.R. China
Jian-Guo Li
China National Standards Committee on Pressure Vessels, Beijing 100088, P.R. China
Contributed by the Pressure Vessels and Piping Division for publication in the JOURNAL OF PRESSURE VESSEL TECHNOLOGY. Manuscript received by the PVP Division, June 5, 1997; revised manuscript received August 31, 1999. Technical Editor: S. Y. Zamrik.
J. Pressure Vessel Technol. Feb 2000, 122(1): 2-8 (7 pages)
Published Online: August 31, 1999
Article history
Received:
June 5, 1997
Revised:
August 31, 1999
Citation
Lu , M., Chen , Y., and Li , J. (August 31, 1999). "Two-Step Approach of Stress Classification and Primary Structure Method ." ASME. J. Pressure Vessel Technol. February 2000; 122(1): 2–8. https://doi.org/10.1115/1.556139
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