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Reliability Based Structural Topology Optimization Considering Non-stationary Stochastic Excitations

Hu, Zhiqiang / Wang, Ziqi / Su, Cheng / Ma, Haitao

Abstract This paper studies the optimum structural design considering non-stationary stochastic excitations. The topology optimization of the lateral bracing system of frame structures is conducted and the first-passage probability of a displacement response is minimized under the material volume constraint. The concept of Solid Isotropic Material with Penalization (SIMP) model is employed for describing the material distribution. An efficient optimization algorithm based on explicit time-domain method is developed. Numerical examples of frame structures subjected to non-stationary seismic excitations are investigated to demonstrate the effectiveness of the proposed approach.

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Reliability Based Structural Topology Optimization Considering Non-stationary Stochastic Excitations

Hu, Zhiqiang / Wang, Ziqi / Su, Cheng / Ma, Haitao

Abstract This paper studies the optimum structural design considering non-stationary stochastic excitations. The topology optimization of the lateral bracing system of frame structures is conducted and the first-passage probability of a displacement response is minimized under the material volume constraint. The concept of Solid Isotropic Material with Penalization (SIMP) model is employed for describing the material distribution. An efficient optimization algorithm based on explicit time-domain method is developed. Numerical examples of frame structures subjected to non-stationary seismic excitations are investigated to demonstrate the effectiveness of the proposed approach.

Reliability Based Structural Topology Optimization Considering Non-stationary Stochastic Excitations

Hu, Zhiqiang / Wang, Ziqi / Su, Cheng / Ma, Haitao

Abstract This paper studies the optimum structural design considering non-stationary stochastic excitations. The topology optimization of the lateral bracing system of frame structures is conducted and the first-passage probability of a displacement response is minimized under the material volume constraint. The concept of Solid Isotropic Material with Penalization (SIMP) model is employed for describing the material distribution. An efficient optimization algorithm based on explicit time-domain method is developed. Numerical examples of frame structures subjected to non-stationary seismic excitations are investigated to demonstrate the effectiveness of the proposed approach.

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Titel:

Reliability Based Structural Topology Optimization Considering Non-stationary Stochastic Excitations

Beteiligte:

Hu, Zhiqiang (Autor:in) / Wang, Ziqi (Autor:in) / Su, Cheng (Autor:in) / Ma, Haitao (Autor:in)

Erschienen in:

KSCE Journal of Civil Engineering ; 22 ; 993-1001

Erscheinungsdatum:

01.03.2018

Format / Umfang:

9 pages

ISSN:

1976-3808 , 1226-7988

DOI:

https://doi.org/10.1007/s12205-018-0012-z

Medientyp:

Aufsatz (Zeitschrift)

Format:

Elektronische Ressource

Sprache:

Englisch

Schlagwörter:

explicit time-domain method , first-passage probability , non-stationary stochastic dynamics , topology optimization Engineering , Civil Engineering , Industrial Pollution Prevention , Geotechnical Engineering & Applied Earth Sciences

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