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  • 1
    Electronic Resource
    Electronic Resource
    A local coordinate system for assumed strain shell element formulation (1995)
    Springer
    Computational mechanics 15 (1995), S. 473-484 
    Details
    ISSN: 1432-0924
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract A new local coordinate system is introduced for the assumed strain formulation so that the resulting shell element can pass both the patch test and the locking test. The coordinate system is tested by implementing it in two nine-node assumed strain shell elements. The elements adopting the new local coordinate system not only pass various patch tests successfully but also perform well in locking tests.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00350359
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  • 2
    Electronic Resource
    Electronic Resource
    A local coordinate system for assumed strain shell element formulation (1995)
    Springer
    Computational mechanics 15 (1995), S. 473-484 
    Details
    ISSN: 1432-0924
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract  A new local coordinate system is introduced for the assumed strain formulation so that the resulting shell element can pass both the patch test and the locking test. The coordinate system is tested by implementing it in two nine-node assumed strain shell elements. The elements adopting the new local coordinate system not only pass various patch tests successfully but also perform well in locking tests.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s004660050034
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Spinal clear cell meningioma presented with progressive paraparesis in infancy (2000)
    Springer
    Child's nervous system 16 (2000), S. 607-610 
    Details
    ISSN: 1433-0350
    Keywords: Keywords Spinal clear cell meningioma ; Infancy
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract  Clear cell meningioma, about 20 cases of which have been reported in the literature, is a morphological variant of meningioma. The authors report a case of spinal clear cell meningioma that occurred in a child. A 14-month-old girl showed gradually progressive paraparesis 1 month after she started to walk. Magnetic resonance image showed an intradural extramedullary mass compressing the conus medullaris and cauda equina. Complete excision of the tumor was done, and the patient gradually recovered from motor weakness and neurogenic bladder. Histological examinations along with immunohistochemical and ultrastructural investigations allowed a diagnosis of clear cell meningioma. During the follow-up period, a recurrent mass lesion was detected on the 8-month follow-up MR image in the same region. Because clear cell meningioma might be biologically aggressive, postoperative adjuvant therapy and close follow-up investigation should be considered.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/PL00007302
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    Harvesting rate of the termite,Drepanotermes tamminensis (Hill) within native woodland and shrubland of the Western Australian wheatbelt (1993)
    Springer
    Ecological research 8 (1993), S. 269-275 
    Details
    ISSN: 1440-1703
    Keywords: Drepanotermes tamminensis ; harvesting rate ; Isoptera ; termite
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract The Western Australian termite,Drepanotermes tamminensis (Hill), harvests various plant materials according to biomass availability. The main litter components harvested by this termite in a woodland dominated byEucalyptus capillosa are bark and leaves of the major tree species, while in shrubland dominated byAllocasuarina campestris, shoots of this species are taken. Harvesting mainly occurs during the autumn (April–May) and spring (September–October) seasons. The commencement and duration of harvesting appears to depend partly on weather conditions, with harvesting taking place at temperatures between 15 and 25°C after periods of rain. This species of termite harvests approximately 15.6 g m−2 year−1 and 3.2 g m2 year−1 (dry weight of plant material) in the woodland and shrubland, respectively.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02347186
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  • 5
    Electronic Resource
    Electronic Resource
    Influence of vegetation and soil types on the wheatbelt termite,Drepanotermes tamminensis (Hill), in the Western Australian wheatbelt (1994)
    Springer
    Ecological research 9 (1994), S. 151-158 
    Details
    ISSN: 1440-1703
    Keywords: Drepanotermes tamminensis ; habitat ; Isoptera ; soil type ; termite ; vegetation type
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract A survey of the distribution and density of mounds of the harvester termite,Drepanotermes tamminensis (Hill), was carried out in the Durokoppin Nature Reserve, Western Australia in 1990. Vegetation and, to a lesser extent, soil type, appear to be important factors in determining density and distribution of termite mounds within the Reserve. A more detailed study of mounds in Wandoo (Eucalyptus capillosa) woodland and Casuarina (Allocasuarina campestris) shrubland indicated that the total number and size of mounds were significantly higher in the woodland than in the shrubland. The total wet weight biomass ofD. tamminensis was calculated as 3.74 gm−2 (37.4 kg ha−1) in the woodland and 1.69 gm−2 (16.9 kg ha−1) in the shrubland. Thus, of the two favored habitats, Wandoo woodland appears to be more optimal for this termite species than the Casuarina shrubland.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02347490
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  • 6
    Electronic Resource
    Electronic Resource
    On the failure indices of quadratic failure criteria for optimal stacking sequence design of laminated plate (1994)
    Springer
    Applied composite materials 1 (1994), S. 81-85 
    Details
    ISSN: 1573-4897
    Keywords: Failure index ; Quadratic failure criteria ; Maximum strength ; Optimal stacking sequence
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract The quadratic failure criterion, which is intended to predict fracture, may be used as an object function for optimal stacking sequence design of laminated plate. However, calculations using a symmetric laminated plate demonstrate that Tsai-Wu theory may give incorrect optimum predictions under uniaxial loading.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00567214
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    Paper (German National Licenses)
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  • 7
    Electronic Resource
    Electronic Resource
    Preparation of Fe-free alumina powder from kaolin (1995)
    Springer
    Journal of materials science 14 (1995), S. 425-427 
    Details
    ISSN: 1573-4811
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00274561
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  • 8
    Electronic Resource
    Electronic Resource
    Sintering temperature and dielectric constant of glass-alumina composite with NaF addition (1996)
    Springer
    Journal of materials science 15 (1996), S. 889-891 
    Details
    ISSN: 1573-4811
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00592720
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  • 9
    Electronic Resource
    Electronic Resource
    Optimum stacking sequence of composite laminates for maximum strength (1995)
    Springer
    Mechanics of composite materials 31 (1995), S. 290-300 
    Details
    ISSN: 1573-8922
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract A method is presented for maximum strength optimum design of symmetric composite laminates subjected to in-plane and transverse loadings. The finite element method based on shear deformation theory is used for the analysis of composite laminates. Ply orientation angles are chosen as design variables. The quadratic failure criterion which is meant to predict fracture, is used as an object function for optimum stacking sequence design of a laminated plate. The Broydon-Fletcher-Goldfarb-Shanno optimization technique is employed to solve the optimization problem effectively. Numerical results are given for various loading conditions, boundary conditions, and aspect ratios. The results show that the quadratic failure criterion such as Tsai-Hill theory is effective for the optimum structural design of composite laminates.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00615644
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  • 10
    Electronic Resource
    Electronic Resource
    Static strength and failure mechanism of CFRP under biaxial loadings (1998)
    Springer
    Mechanics of composite materials 34 (1998), S. 28-42 
    Details
    ISSN: 1573-8922
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract Tests of cross-ply composite tubes were performed under combined axial and torsional loading up to failure. Strength properties and failure mechanisms were evaluated with reference to the biaxiality ratio of the loading. The scattering of the biaxial strength data was analyzed using the Weibull distribution. The axial contraction of carbon fiber-reinforced plastic (CFRP) tubes under biaxial loading was investigated theoretically and experimentally. Artificial neural networks were introduced to predict the failure strength using the algorithm of the error back-propagation. The prediction was also made by the Tsai-Wu theory using the experimental data and by the combined optimized tensor-polynomial theory. A comparison shows that the artificial neural network has the smallest root-mean square (RMS) error of the three prediction methods. The prediction of the axial contraction of the tubes correlates well with the results of a linear variable differential transformer (LVDT) of the testing machine. From the phenomenological analysis of the failure and the fractographic observations of the fracture surface, three types of failure modes and microscopic failure were investigated, depending on the biaxiality ratio, and the corresponding failure mechanisms are suggested.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02256140
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