Optimal placement of metallic dampers for seismic upgrading of multistory buildings based on a cost‐effectiveness criterion using genetic algorithm

Li, Zongjing; Shu, Ganping

doi:10.1002/tal.1595

Cited by 10 publications

(5 citation statements)

References 38 publications

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“…The genetic algorithm (GA) [64][65][66], mimicking natural selection and genetic mechanisms of evolution, serves as a method for finding optimal solutions by simulating these evolutionary processes. This technique operates directly on structural objects, unconstrained by differentiation or functional continuity; it exhibits inherent parallelism and superior global optimization capabilities.…”

Section: General Optimization Proceduresmentioning

confidence: 99%

Equivalent Linearization and Parameter Optimization of the Negative Stiffness Bistable Damper

Fan,

Huang,

Huo

2024

Buildings

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The negative stiffness bistable damper (NSBD) was proposed to suppress structural dynamic responses in our previous study. The vibration mitigation performance of the NSBD is influenced by its design parameters, including negative stiffness, cubic stiffness, and damping coefficients. However, it is extremely challenging to directly acquire the ideal design parameters of the NSBD owing to its inherent nonlinearity. To address this disadvantage, the optimal design approach for the NSBD, based on the equivalent linearization method (ELM) and genetic algorithm (GA), is presented in this paper. The nonlinear NSBD system can be transformed to a linear system utilizing the ELM based on the pseudo-excitation method (PEM). The linearization model that corresponds to the nonlinear NSBD is fairly accurate in its approximation and can be indicated from the numerical results. Then, the main structure’s peak response is minimized through the optimization of the design parameters of the NSBD using the H∞ norm and GA. Moreover, the proposed approach’s effectiveness is assessed using the optimal parameters to calculate the displacement responses of a tall building equipped with the NSBD during various seismic excitations. As revealed by the numerical results, the displacement of the tall building can be effectively restrained by the optimized NSBD.

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Section: General Optimization Proceduresmentioning

confidence: 99%

Equivalent Linearization and Parameter Optimization of the Negative Stiffness Bistable Damper

Fan,

Huang,

Huo

2024

Buildings

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“…The GA (Bozorgvar and Zahrai, 2019; Colherinhas et al, 2019; Di et al, 2021; Li and Shu, 2019; Mehrkian et al, 2019; Uz and Hadi, 2014) is a self-adaptive global optimization search algorithm formed by simulating the genetic and evolution process of living beings in the natural environment. This method simulates the duplication, crossover, and mutation that occur in natural selection and inheritance, and through continuous evolution, it finally converges to a group of individuals who are most adaptable to the environment, thereby obtaining the optimal solution.…”

Section: Optimal Design Of the Iptmdmentioning

confidence: 99%

Equivalent linearization and parameter optimization of isochronous-pendulum tuned mass damper

Huang

Huo

2022

Advances in Structural Engineering

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The isochronous-pendulum tuned mass damper (IPTMD) with curved supports was proposed to eliminate the loss of vibration control performance induced by large swing angles in our previous study. However, the nonlinearity caused by the IPTMD leads to difficulty in its parameter optimization. To overcome this issue, an approach based on the equivalent linearization method (ELM) and genetic algorithm (GA) is proposed in this paper to facilitate the optimal design of the IPTMD. First, based on the pseudo excitation method, the nonlinear IPTMD system is equivalent to a linear one using the ELM. The numerical results demonstrate that the equivalent linearization model of the IPTMD is fairly precise to approximate the original nonlinear IPTMD. Then the optimal design based on the H∞ norm and GA is performed to compute the design parameters of the IPTMD, which can minimize the peak response of the main structure. Additionally, to evaluate the effectiveness of the proposed approach, the optimal parameters are applied to compute the dynamic response of a tall building installed with the IPTMD under different earthquakes. The numerical results reveal that the optimized IPTMD can reduce the displacement of the tall building effectively.

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“…In recent studies, MSDs were investigated and proven to be optimized dynamically [10], numerically [11], and according to the bi-directional evolutionary structural [12] technique. MSDs serve dual functions [13], upgrade seismic performance through the optimal placement methodology [14], have a B/D ratio greater than 2 [15], are capable of yielding in both flexure and shear [16], are used to reinforce braced frames [17], can be integrated into a structure [18], and can be applied to concrete frames [19]. One of the main advantages of MSDs is their ability to operate over a wide range of frequencies, making them effective at reducing both low-and high-frequency vibrations.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of the Seismic Performance of Single-Plate Metallic Slit Dampers Using Experimental and Numerical Data

Payawal,

Kim

2023

Buildings

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Passive energy dissipation systems and devices are helpful in mitigating the danger of earthquake damage to structures. Metallic slit dampers (MSDs) are one of the most efficient and cost-effective solutions for decreasing seismic energy intake. The potential importance of MSDs in managing vibrations and limiting structural fatigue continues to grow as research advances and new materials and designs are introduced. This study evaluated the seismic performance of single-plate MSDs (SPMSDs) through a combination of numerical simulation and assessment of experimental results. ABAQUS software was used to create an assembly consisting of endplates, bolts, and SPMSDs. A real-world earthquake scenario was simulated using cyclic loads based on ASCE/SEI standards, and displacement-measuring devices such as strain gauges and LVDT were employed to record the behavior of the SPMSDs. The results of the experiment are used to assess the compliance of the SPMSDs and discuss their behavior as they undergo minimum and maximum displacements due to minimum and maximum applied forces. The energy dissipation capabilities of the dampers are presented by analyzing and comparing the area of their hysteresis loops, equivalent viscous damping, and their damping ratios. Actual failure modes are identified and shown to describe the limitations and potential vulnerability of the dampers. The relative error between the lowest and greatest recorded forces from experimental data and numerical simulation ranges from 4.4% to 5.7% for SPMSD 1 and from 1.6% to 2.1% for SPMSD 2, respectively. These deviation values represent a satisfactory level of precision, demonstrating that the numerical simulation accurately predicts the actual performance and behavior of the dampers when subjected to cyclic stress. The topology optimization performed in this study yielded an improved geometry of the SPMSD suited for a corresponding maximum considered earthquake (MCER) displacement of ±33 mm. This research also suggests practical implementations of the investigated and improved SPMSDs.

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Optimal placement of metallic dampers for seismic upgrading of multistory buildings based on a cost‐effectiveness criterion using genetic algorithm

Cited by 10 publications

References 38 publications

Equivalent Linearization and Parameter Optimization of the Negative Stiffness Bistable Damper

Equivalent Linearization and Parameter Optimization of the Negative Stiffness Bistable Damper

Equivalent linearization and parameter optimization of isochronous-pendulum tuned mass damper

Evaluation of the Seismic Performance of Single-Plate Metallic Slit Dampers Using Experimental and Numerical Data

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