Exact(5)
Maximum displacement demand resulted from the NTHA.
Maximum displacement demand achieved by elastic dynamic force reduced by behavior factor.
Although maximum displacement demand can be obtained through nonlinear time history (NLTH) analysis, many approximate methods are frequently recommended in structural specifications to reduce the required computational time.
Predicted residual displacement demands using both procedures do not agree well with test results, and alternatively, an empirical equation is proposed for the residual displacement demand in terms of the maximum displacement demand.
The method involves the modification of the displacement demand of an equivalent single-degree of freedom system (this simplifies building characteristics) by multiplying it with a series of coefficients to generate an estimate of the maximum displacement demand of the nonlinear oscillator (Molina et al. 2010).
Similar(55)
The results show that the maximum displacement demands computed from the fiber analysis and the method that involves with the trilinear hysteretic model exhibit good agreement with test results.
Maximum displacement demands can be obtained through non-linear time history analysis, however, many approximate methods have been proposed in recent codes to reduce the required computational time distinctive of non-linear approaches.
This paper summarizes the comprehensive statistical results of constant damage inelastic displacement ratios which allow the evaluation of maximum inelastic displacement demand for structures with constant damage performance.
The results show that the maximum curvature ductility demands of the columns and the maximum displacement ductility demands of the structure were positively associated with the spectral acceleration and negatively associated with the strong column factor.
The maximum displacement response demands for NSSI-1, SSI-1, SSI-2 and SSI-3 models reach: using equivalent static load method 9.8, 11.5, 12.6 and 14.5 mm respectively; using response spectra method 5.9, 9.5, 10.6 and 12.4 mm respectively and using time history method (average value of nine earthquake records) 14.11, 15.62, 15.8 and 18.1 mm respectively.
Assuming an acceptable value for yield displacement, the designer converts the maximum displacement to the demand displacement ductility, and using a series of displacement response spectrums with different damping values (due to ductility values), calculates the effective period of the single degree of freedom structure in the maximum displacement.
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