Numerical integration of large deflection elastic--plastic axisymmetric shells of revolution

Technical Report · Wed Dec 01 04:00:00 EST 1976

DOI:https://doi.org/10.2172/7310254· OSTI ID:7310254

Ahmed, H. U.

The improvement in the method of large deflection elastic-plastic analysis of shells and other structures appears to have continued interest. With the development in this work an improved numerical suppression scheme is now available for the large deflection elastic-plastic analysis of axisymmetric shells of revolution subjected to symmetric loadings. Quazilinearization of Sander's non-linear shell equations is presented for the first time. With these quazilinearized equations the suppression scheme has been developed to solve non-linear boundary-value problems. This suppression scheme has been used in conjunction with a Newton-Raphson method to improve a stable convergence process at the yield surface in elastic-plastic problems. Results presented indicate the accuracy of this numerical scheme. It appears to be possible to extend this method for more complicated situations.

• Research Organization: Argonne National Lab., IL (USA)
• Sponsoring Organization: US Energy Research and Development Administration (ERDA)
• DOE Contract Number: W-31109-ENG-38
• OSTI ID: 7310254
• Report Number(s): ANL--76-XX-45
• Country of Publication: United States
• Language: English

Related Subjects

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AXIAL SYMMETRY
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SHELLS
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TENSILE PROPERTIES