[Back]

C. Adam, R. Heuer, F. Ziegler:
"Experimental and numerical dynamic analysis of inelastic shear frames with substructures";
in: "Proc. of 39th AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference and Exhibit and AIAA/ASME/ AHS Adaptive Structures Forum", issued by: American Institute of Aeronautics; American Institute of Aeronautics, 1998, ISBN: 1-56347-265-1, 1469 - 1479.

The influence of light-weight substructures on the dynamic response of elastic and elastic-plastic shear frames is studied experimentally and numerically. Small-scale two-storey model frames, with an elastic SDOF substructure attached to the second floor, are considered for the case of in-plane sinusoidal support excitation. Both elastic and elastic-plastic response are measured varying the material properties of the first floor. The experimental results are compared with those obtained by computational simulations. The latter are derived by an inelastic iterative synthesis technique at low computing costs. Thereby, the linear modal parameters of the main structure are determined in advance and can be used in all subsequent computations of the inelastic system. Experimental and numerical results are in excellent agreement. However, the material properties have to be determined very carefully. It turns out that both the elastic and the elastic-plastic shear frames are very sensitive with regard to any changes of the substructure parameters.