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http://dx.doi.org/10.12814/jkgss.2022.21.3.001

Inverse Estimation Method for Spatial Randomness of Material Properties and Its Application to Topology Optimization on Shape of Geotechnical Structures  

Kim, Dae-Young (Technology Development Center, Saman Corporation)
Song, Myung Kwan (Energy Infrastructure Team, Global Division, Hanmi Global Co., Ltd.)
Publication Information
Journal of the Korean Geosynthetics Society / v.21, no.3, 2022 , pp. 1-10 More about this Journal
Abstract
In this paper, the spatial randomness and probability characteristics of material properties are inversely estimated by using a set of the stochastic fields for the material properties of geotechnical structures. By using the probability distribution and probability characteristics of these estimated material properties, topology optimization is performed on structure shape, and the results are compared with the existing deterministic topology optimization results. A set of stochastic fields for material properties is generated, and the spatial randomness of material properties in each field is simulated. The probability distribution and probability characteristics of actual material properties are estimated using the partial values of material properties in each stochastic field. The probability characteristics of the estimated actual material properties are compared with those of the stochastic field set. Also, response variability of the ground structure having a modulus of elasticity with randomness is compared with response variability of the ground structure having a modulus of elasticity without randomness. Therefore, the quantified stochastic topology optimization result can be obtained with considering the spatial randomness of actual material properties.
Keywords
Spatial randomness; Correlation distance; Stochastic field; Bayesian updating; Topology optimization;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
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