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  • 1
    Electronic Resource
    Electronic Resource
    Highly efficient and accurate buffeting analysis of complex structures (1998)
    Chichester : Wiley-Blackwell
    Communications in Numerical Methods in Engineering 14 (1998), S. 559-567 
    Details
    ISSN: 1069-8299
    Keywords: gust ; buffet ; random ; vibration ; Engineering ; Numerical Methods and Modeling
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mathematics , Technology
    Notes: A convenient and effective finite-element-based method for buffeting analysis of complex structures is presented. This method is very efficient for structures with the natural frequencies closely spaced because their corresponding modes and the cross-correlation terms between them should be included in the mode-superposition analysis. The imperfect correlation between gust excitations can also be dealt with conveniently. A numerical example is given which shows that by using this method the buffeting analysis of complex structures with thousands of degrees of freedom, dozens of imperfectly related excitations and a number of participating modes can be executed quite easily on an ordinary IBM/486 (or 586) personal computer. © 1998 John Wiley & Sons, Ltd.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
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    Paper (German National Licenses)
  • 2
    Electronic Resource
    Electronic Resource
    A CONTINUUM MODEL FOR DYNAMIC DAMAGE EVOLUTION OF ANISOTROPIC BRITTLE MATERIALS (1996)
    Chichester [u.a.] : Wiley-Blackwell
    International Journal for Numerical Methods in Engineering 39 (1996), S. 1555-1583 
    Details
    ISSN: 0029-5981
    Keywords: continuum damage mechanics ; damage evolution law ; dynamic finite element analysis ; brittle materials ; Engineering ; Engineering General
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mathematics , Technology
    Notes: This paper is concerned with the development of a computational model for the damage evolution of brittle materials under dynamic loading. Two models for dynamic damage evolution of brittle materials with or without microflaws in general anisotropic damage state are presented; the first one is based on power function of principal tensile stress and the second one is based on damage strain energy release rate. A second-order tensor based elastic-brittle damage model is formulated which is efficient computationally and consistent in its treatment of damage evolution. Measured Weibull strength distribution may be employed to account for flaw size distribution effects on the damage accumulation rate. Methods of computing the accumulated damage of a structural component and their implementation in a finite element program together with some numerical results are presented. Finally, a comparison has been made between the two damage models.
    Additional Material: 29 Ill.
    Type of Medium: Electronic Resource
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