Three-dimensional FEM models concerned with the transient response and relevant strength analysis of buried structures due to blast explosions were proven extremely costly using conventional FEM codes. This is due to the required small time-step as well as the considerable extension of the problem domain that has to be chosen so long that no reflection is allowed from the artificial infinite soil boundaries before the maximum displacement (or Von Mises stress) amplitude of the structure is reached. In case of buried pipelines, the complexity increases because the length of the model should at least include the unknown wave length along the pipeline. To overcome this problem, a reduced model taking into consideration the decoupled incident P- SH- and SV-waves, has been developed. The new theory achieves a manageable conservative relationship between the strength of the buried pipeline and the allowable peak particle velocity. The proposed relationship is based on the criterion of either the hoop or Von-Mises stresses and it is given in terms of the allowable stress as a percentage of the Specified Minimum Yield Stress (SMYS) of the pipeline. An example is given for a buried high-pressured natural gas pipeline.


    Access

    Access via TIB

    Check availability in my library


    Export, share and cite



    Title :

    Strength analysis of buried pipes under explosive loads


    Contributors:


    Publication date :

    1998


    Size :

    10 Seiten, 10 Quellen


    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




    Airplane impact loads on buried pipes

    Scott, R.G. | Engineering Index Backfile | 1941



    Analysis of Deeply Buried Flexible Pipes

    Suleiman, M. T. / Lohnes, R. A. / Wipf, T. J. et al. | Transportation Research Record | 2003


    Stop corrosion of buried pipes

    Engineering Index Backfile | 1954


    Reliability Analysis of Deflection of Buried Flexible Pipes

    Sivakumar Babu, G.L. | Online Contents | 2006