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  • 1
    Digitale Medien
    Digitale Medien
    Quadratic and cubic transition elements (1981)
    Chichester [u.a.] : Wiley-Blackwell
    International Journal for Numerical Methods in Engineering 17 (1981), S. 1397-1406 
    Details
    ISSN: 0029-5981
    Schlagwort(e): Engineering ; Engineering General
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Mathematik , Technik allgemein
    Notizen: Quadratic and cubic quadrilateral isoparametric elements are investigated for use as transition elements for use a crack tip elements. Computations for a single element are explicitly carried out using a symbolic algebraic manipulation program and in addition to the desired square root singularity, additional singularities are revealed. Cubic transitional elements were used for a double-edge crack problem and only marginal improvement is found for a well-laid out grid.
    Zusätzliches Material: 3 Ill.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/nme.1620170908
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  • 2
    Digitale Medien
    Digitale Medien
    High-temperature test facility for repeated pressure loading of cylinders (1976)
    Springer
    Experimental mechanics 16 (1976), S. 270-272 
    Details
    ISSN: 1741-2765
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Maschinenbau
    Notizen: Abstract A test facility capable of subjecting cylindrical specimens to repeated pressure loadings at high temperatures is described. The loading rates range from 480 to 600 cycles per minute. The test pressures range from 310 to 447 MN/m2 and the test temperatures are 260°C, 538°C and 816°C. Testing was performed at two strain rates. A “low” strain rate of about 4 per second and a “high” strain rate of about 9.6 per second. The uniqueness of the facility lies in the choice of a solid loading medium to transmit pressure to the specimen. Some typical results are presented.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF02321152
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  • 3
    Digitale Medien
    Digitale Medien
    Inelastic behavior of thick-walled cylinders subjected to nonproportionate loading (1973)
    Springer
    Experimental mechanics 13 (1973), S. 113-119 
    Details
    ISSN: 1741-2765
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Maschinenbau
    Notizen: Abstract Inelastic behavior of thick-walled cylinders subjected to nonproportionate loading was studied by the testing of specimens made of C1045 steel and of annealed copper. Several theories were reviewed. A closed-form solution proposed by Mendelson12 was used to predict external strains for open-end and closed-end thick-walled cylinders. An incremental theory proposed by Chu13 was used to provide incremental solutions for open-end thick-walled cylinders, and for cylinders subjected to nonproportionate loading. Test data for open-end and closed-end thick-walled cylinders made of C1045 steel and of annealed copper were in excellent agreement with the incremental theory. Larger values were predicted by use of the closed-form solution for circumferential strains than actual test data for open-end thick-walled cylinders at large depth of yielding. For cylinders subjected to nonproportionate loading, excellent agreement was indicated between the incremental theory and the experiments for the plot of axial load vs. circumferential strain for specimens made of both metals. Agreement between the incremental theory prediction of axial strains for the specimens made of annealed copper and test data is quite satisfactory. Larger values were predicted by the incremental theory for axial strain than experimental data for specimens made of C1045 steel. The error was conservative.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF02323968
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