Damper configurations

Step 4 Evaluate the objective function/, corresponding to the initial damper configuration... 

Lopez-Garcia, D. (2001). A simple method for the design of optimal damper configurations in MDOF stmctures. Earthquake Spectra, 17(3), 387-398. doi 10.1193/l.1586180... 

Figure 1. Dampers configurations (a) Chevron brace, (b) toggle brace, (c) lever arm, (d) scissor jack...

Analysis of the amplification and active controlled devices placement on efficiency of a control system was performed. A twenty-story fi-amed structure with active control systems including different dampers configurations was simulated. The response of the structure to an artificial white noise ground motion was simulated in order to find the optimal locations of control devices. Behavior of the structure was further investigated under natural earthquake excitations. 

Liu, W. (2003).Optimization strategy for damper configurations ofbuildings based on performance indices. Ph. D. Thesis, State University of New York at Buffalo. 

These layouts are configured as shown in Figure 6-25. The cantilevered support ribs, along with die sector diey are supporting at bodi ends, form a centering spring element. The small gap between die sector and die outer ring forms die squeeze film damper clearance... 

In addition, a time-dependent viscoelastic component described by the so-called Voigt-Kelvin configuration, i.e. the combination of spring E and damper Yf comes into action. Further, a viscoplastic flow component may exist, modelled by the damper of viscosity... 

This test should be considered optional, as long as pressure indications are precise and accurate. Verification of the pressure accuracy relates to a null indication when the sensor is isolated from the system (usually the damper incorporating the pressure transducer is removed from the LC configuration) and the indication of a true value when a restriction is placed within the system instead of the column, generating a known pressure drop for a specified flow rate and a given density of the mobile phase. 

This method starts with an initial configuration of r dampers, denoted by /, and the corresponding objective function is denoted by /. Generally, Ig corresponds to the configuration obtained by either the sequential search method (SS) or any given pre-design method. In the WOBI search algorithms the objective function /is calculated... 

Step 5 Remove one damper from 1 and calculate the objective function/for each of the r configurations of (r-1). 

Figure 9. Peak values of bending moments for different configurations of dampers 9...

---