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The article presents a new tool for modeling parts produced by rapid prototyping (RP) technologies that has great potential for building structures with programmable properties, especially for items related to the energy dissipation during deformation. Using a wide variety of building materials and controllable part growing is the most important benefit for industry implementation of RP technology. Mass deployment is also hampered by the high price of equipment and materials for the technology.
The aim of this contribution is to propose a new non-asymptotic 2D-model of non-homogeneous Reissner type elastic plates with one-directional periodic (uniperiodic) structure. This model was obtained by tolerance averaging technique (TAA) describing effect of repetitive cell size l (and at the same time the period-length of in-homogeneity) on the overall plate behaviour. The new feature of the proposed model is the possibility to apply the analysis of plates having thickness of an order of the period-length. So far, the non-asymptotic 2Dmodel of Reissner-type uniperiodic plates was formulated under assumption that the plate thickness is very small compared to the period-length.
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Many building elements, due to their destination, are exposed to the influence of external environment, often very aggressive. Due to that such building elements should be protected in a special way. I have presented the outline of problems related with maintenance of building structures, taking into account the principles of sustainable building. I have paid extra attention to the characteristics of local environment conditions and to their influence on the response of selected building elements. Building materials should be characterized with such features that will assure that the structures, in which they will be installed, will meet the requirements referring to service features. In this paper requirements regarding structural-material solutions for structures, bases for diagnostic tests and the essence of repair and rehabilitation of building structures has been discussed.
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