Reliability Based Structural Topology Optimization Considering Non-stationary Stochastic Excitations
- Resource Type
- Article
- Authors
- Zhiqiang Hu; Ziqi Wang; Cheng Su; Haitao Ma
- Source
- KSCE Journal of Civil Engineering, 22(3), pp.993-1001 Mar, 2018
- Subject
- 토목공학
- Language
- English
- ISSN
- 1976-3808
1226-7988
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.