Acta Technica 102. (1989)

1-2. szám

ACTA TECHNICA Volume 102 Nos 1-4 CONTENTS Bognár, L.: Stability of planar reinforced concrete column systems ......................................... 3 Bojtár, I■ - Baqi. К. : Micromechanical model for numerical analysis of granular materials. 207 Gáspár, Zs. - Domokos, G.: Global investigation of discrete models of the Euler buckling . 227 Györgyi, 3,: Production of dynamic stiffness matrix in case of other than rigid joints and rigid elements ..................................................................................................................................239 Hegedűs, I, - Kollár, L.P.: Wrinkling of faces of compressed and bent sandwich bars and its interaction with overall instability ................................................................................... 49 Imre, E■ : Some physical problems associated with the skin bearing capacity of axially loaded piles .................................................................................................................................... 65 Iványi, M,: Failure tests with steel frameworks ............................................................................ 247 Kaliszkv, S. - Lágá, J,: Optimal design of dynamically loaded reinforced concrete frames under single displacement constraint ........................................................... 267 Kollár, L.: Space structures: static relationships, structural forms ..................................... 281 Kurutz, M,: Stability of structures of non-smooth energy functionals in one-dimensional case ................................................................................................................................................... 291 Páczelt, I, - Szabd, T,: A bandwidth reduction process for substructural element method .. 315 Popper, Gy,: Identification of damping parameters in linear vibration systems ..................... 327 Rédey, G, - Paál, T, : Expert system for geotechnical testing of damaged buildings ............. 87 Roller, B,: The general state change equation of bar structures .............................................. 339 Sajtos, I,: Calculation of hyperbolic paraboloid segmental shell with protruding un­supported edge ................................................................................................................................ 103 Scharle, P.: Attractions and risks of the analogies ..........................................................................355 Tárnái, T,: Higher-order infinitesimal mechanisms ......................................................................... 363 Tárnái, T, - Makai, E,: Kinematical indeterminacy of a pair of tetrahedral frames ............. 123 Tiirkbssy, A,: Accuracy test of simplified continuum calculations of two-layer space grids 147 Vásárhelyi, A, - Lógó, J.: Analysis of the structures for dynamic effects with mathematical programming ............................................................................................................ 379 Vértes, Gy,: Investigation of nonlinear behaviour of building structures under dynamic load ................................................................................................................................................. 391

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