Object-oriented development and application of a nonlinear structural analysis framework

Lin, Bo-Zhou; Chuang, Ming‐Chuen; Tsai, Keh‐Chyuan

doi:10.1016/j.advengsoft.2008.03.012

Cited by 61 publications

(57 citation statements)

References 4 publications

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“…In the numerical analysis, three di®erent earthquake records representing the far-¯eld, near-fault, and basin characteristics are chosen as follows: (1) the 100% N-S component of 1940 El Centro earthquake, (2) the 40% E-W component measured at TCU065 station during the 1999 Taiwan Chi-Chi earthquake, and (3) the 200% E-W component measured at TAP010 station during the 1999 Taiwan Chi-Chi earthquake. Since the software PISA3D for analyzing seismic responses of structures implemented with viscous dampers has been extensively evaluated with its accuracy and e±ciency, 26 it is adopted for the numerical evaluation. For the optimization process, the GA toolbox developed by MATLAB is employed.…”

Section: Numerical Evaluation Of the Existing Optimization Methodsmentioning

confidence: 99%

“…(14) should be considered to re°ect the signi¯cance of the reduction ratios for each story. [24][25][26] The adjustment index i is de¯ned to be related to the acceleration and the displacement by utilizing a normalized process based on the structural modal displacement i . Moreover, the adjustment index i is related to the story shear force.…”

Section: Adjustment Indices For Story Responsementioning

confidence: 99%

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Optimal Distribution of Damping Coefficients for Viscous Dampers in Buildings

Lin¹,

Hwang

Chen

2017

Int. J. Str. Stab. Dyn.

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Design guidelines for implementing viscous dampers to buildings have been broadly included in seismic design codes worldwide. Although the relationship between the damping coe±cient of viscous dampers and the added damping ratio to the structure has been theoretically studied, the process of distributing the damping coe±cient onto each story of a building has not been regulated by the codes. For practical applications, some distribution methods have been previously proposed. However, no comparison has been made between these proposed methods considering the controllability and design economy. In this paper, two search methods based on the genetic algorithms (GAs) are adopted to examine the optimal distribution of damping coe±cients. The results are then compared with a variety of existing distribution methods. A comparison is made for the distribution methods assuming the same added damping ratio for Int. J. Str. Stab. Dyn. Downloaded from www.worldscientific.com by UNIVERSITY OF IOWA on 09/11/16. For personal use only.the structure. Three two-dimensional frames are adopted in the comparison: a regular moment frame, a moment frame with a soft-story, and a setback building. The results indicated that similar seismic response reduction can be achieved by using di®erent distribution methods if the supplemental damping ratio is the same, while the optimal story damping coe±cient can be obtained by using the proposed optimization method. Moreover, the \story shear strain energy to e±cient stories" (SSSEES) method, among others, o®ers advantages in terms of seismic reduction e±ciency, economical design, and practical application simplicity.

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Section: Numerical Evaluation Of the Existing Optimization Methodsmentioning

confidence: 99%

Section: Adjustment Indices For Story Responsementioning

confidence: 99%

Optimal Distribution of Damping Coefficients for Viscous Dampers in Buildings

Lin¹,

Hwang

Chen

2017

Int. J. Str. Stab. Dyn.

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“…The 'exact' seismic responses are those obtained from performing the elastic response history analysis to the complete finite element building models. The PISA3D computer program [21] is used for the numerical analyses. The approach of obtaining the 'exact' seismic responses is designated as the FEM method.…”

Section: The Definition Of Errors Of Estimated Seismic Responsesmentioning

confidence: 99%

Real-valued modal response history analysis for asymmetric-plan buildings with nonlinear viscous dampers

Lin

Liu

Tsai

2015

Soil Dynamics and Earthquake Engineering

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“…3b. The tools for the structural analyses and the visualization of the analytical results are the PISA3D and GISA3D computer programs (Lin et al 2009 By using Eqs. 6 and 7, the 3DOF modal properties for the first five vibration modes of the 3-storey and 20-storey example buildings are obtained as shown in Table 4a-d.…”

Section: Numerical Validationmentioning

confidence: 99%

Estimation of the seismic energy demands of two-way asymmetric-plan building systems

Lin

Tsai

2010

Bull Earthquake Eng

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This paper proposes a method for the estimation of the seismic energy demands of two-way asymmetric-plan buildings under bi-directional ground excitations. The modal absorbed energies of asymmetric-plan buildings are estimated by using the three-degree-offreedom (3DOF) modal systems. The 3DOF modal system represents the two roof translations versus the two base shears and the roof rotation versus the base torque relationships of each vibration mode of two-way asymmetric-plan buildings. Not only the total absorbed energy but also the portions of the total absorbed energy contributed from translational and rotational deformations can be respectively estimated. This study verifies the relationship between the signs of modal eccentricities and the trend of uneven distribution of modal absorbed energy on floor-plan edges of asymmetric-plan buildings. The accuracy of the proposed method was verified by analyzing one 3-storey and one 20-storey two-way asymmetric-plan buildings subjected to bi-directional ground motions. The computational efficiency of the proposed method is confirmed by comparing the computation time with that required by using the nonlinear response history analysis.Keywords Asymmetric-plan buildings · Modal response history analysis · Modal system · Absorbed energy · Torsion · Eccentricity · Seismic behavior

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Object-oriented development and application of a nonlinear structural analysis framework

Cited by 61 publications

References 4 publications

Optimal Distribution of Damping Coefficients for Viscous Dampers in Buildings

Optimal Distribution of Damping Coefficients for Viscous Dampers in Buildings

Real-valued modal response history analysis for asymmetric-plan buildings with nonlinear viscous dampers

Estimation of the seismic energy demands of two-way asymmetric-plan building systems

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