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  • 1
    Electronic Resource
    Electronic Resource
    Multidisciplinary optimization of cast components regarding process characteristics (1998)
    Springer
    Structural and multidisciplinary optimization 16 (1998), S. 212-225 
    Details
    ISSN: 1615-1488
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract Many components of machines and plants are made of cast materials. Their essential advantages are a layout with a high freedom of design, and the possibility of individually choosing material properties. The finding of optimal layouts of cast components is a MultiDisciplinary Optimization (MDO-) task, as the manufacturing and operation of thermal rollers demand the treatment of heat conduction problems, metallurgical aspects, as well as mechanical considerations.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01202832
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  • 2
    Electronic Resource
    Electronic Resource
    Shape optimization of satellite tanks for minimum weight and maximum storage capacity (1989)
    Springer
    Structural and multidisciplinary optimization 1 (1989), S. 171-180 
    Details
    ISSN: 1615-1488
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract The aim of structural design is to determine the dimensions and the shape of a system that fulfils certain requirements in an optimal way. Although this problem is not at all new, the application of mathematical algorithms together with multicriteria and shape optimization techniques as strategies for achieving an optimum are still very rarely used in practice. The efficiency of the optimization procedure SAPOP is demonstrated through the shape optimization of ultra light shell structures (e.g. satellite tanks) for which bending effects as well as the influence of large deformations in the shell theory are taken into account. After establishing a corresponding transfer matrix method for analysis, the meridional shape can be determined by using special shape functions (modified ellipsoids) and a “direct” shape optimization strategy. In addition, simultaneous optimization of shape and wall thickness distribution is introduced.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01637337
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  • 3
    Electronic Resource
    Electronic Resource
    Bubble method for topology and shape optimization of structures (1994)
    Springer
    Structural and multidisciplinary optimization 8 (1994), S. 42-51 
    Details
    ISSN: 1615-1488
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract This paper addresses a novel method of topology and shape optimization. The basic idea is the iterative positioning of new holes (so-called “bubbles”) into the present structure of the component. This concept is therefore called the “bubble method”. The iterative positioning of new bubbles is carried out by means of different methods, among others by solving a variational problem. The insertion of a new bubble leads to a change of the class of topology. For these different classes of topology, hierarchically structured shape optimizations that determine the optimal shape of the current bubble, as well as the other variable boundaries, are carried out.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01742933
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  • 4
    Electronic Resource
    Electronic Resource
    Structural analysis and optimization modelling including fracture conditions (1992)
    Chichester [u.a.] : Wiley-Blackwell
    International Journal for Numerical Methods in Engineering 34 (1992), S. 873-888 
    Details
    ISSN: 0029-5981
    Keywords: Engineering ; Engineering General
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mathematics , Technology
    Notes: This paper introduces a model of a woven monolayer composed of two orthogonal fibres and describes an optimization technique including a fracture condition. The first fracture behaviour of the material containing a local break is analysed. The description of the stress-state in the local break vicinity is reduced to the determination of a special form of the Green function for simultaneous finite-difference equations. The problem allows the analytical solution for unknown functions in terms of Fourier series. The solution of the problem shows that the fracture behaviour of the material depends on the presence of stabilizing tension of fibres parallel to the crack direction. The model is used for establishing an optimization model and for applying an optimization procedure including strength conditions.
    Additional Material: 8 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/nme.1620340312
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