Stochastic modeling and statistical calibration with model error and scarce data

Z Wang, R Ghanem - Computer Methods in Applied Mechanics and …, 2023 - Elsevier
This paper introduces a procedure to assess the predictive accuracy of stochastic models
subject to model error and sparse data. Model error is introduced as uncertainty on the …

REIN: Reliability Estimation via Importance sampling with Normalizing flows

A Dasgupta, EA Johnson - Reliability Engineering & System Safety, 2024 - Elsevier
We introduce a novel framework called REIN: Reliability Estimation by learning an
Importance sampling (IS) distribution with Normalizing flows (NFs). The NFs learn probability …

Learnable quantile polynomial chaos expansion: An uncertainty quantification method for interval reliability analysis

X Zheng, W Yao, Z Gong, X Zhang - Reliability Engineering & System Safety, 2024 - Elsevier
Various uncertainties like random input and data noise in aerospace engineering affect flight
vehicle safety, making uncertainty quantification important for improving system reliability …

Failure probability analysis of high fill levee considering multiple uncertainties and correlated failure modes

R Sun, Y Reheman, X Wang, K Fei, J Zhou, D Jiao - Scientific Reports, 2024 - nature.com
Such complex causative factors in current failure probability models are represented by
simply random uncertainty and completely independent or correlation of failure modes …

Stochastic framework for optimal control of planetary reentry trajectories under multilevel uncertainties

Z Wang, R Ghanem - AIAA Journal, 2023 - arc.aiaa.org
We present a novel stochastic optimal control framework that accounts for various types of
uncertainties, with application to reentry trajectory planning. The formulation of the optimal …

The sound insulation performance of light wood frame construction floor structure based on phononic crystal theory

Y Zou, Z Wang, P Adjei, X Zhao - Journal of Building Engineering, 2023 - Elsevier
The development of timber structures worldwide is rapid and promising. Acoustic insulation
is an important metric to measure the quality of occupants' living conditions. Therefore, to …

Switching diffusions for multiscale uncertainty quantification

Z Gou, X Tu, SV Lototsky, R Ghanem - International Journal of Non-Linear …, 2024 - Elsevier
High-fidelity simulations are increasingly called-upon to resolve the nucleation of
instabilities such as crack initiation and propagation and fluid mixing. While multiscale …

Study on elastic constants of laminated veneer lumber by dynamic test

D Zhang, Z Wang, H Bilal, Z Shen, Y Zhou - Materials and Structures, 2024 - Springer
Laminated veneer lumber (LVL) is a structural composite lumber that has the advantages of
uniform structure, high strength, and flexible size compared with natural solid wood. It is …

Study on vibration performance and comfort of glulam beam and deck floor

Y Zhang, C Miao, Z Wang, Z Xu - European Journal of Wood and Wood …, 2024 - Springer
This paper presents the dynamic characteristics of the glued-laminated-timber (glulam) floor
within China's tallest timber office building and establishes a Finite Element (FE) model. The …

[PDF][PDF] Research and Application of Log Defect Detection and Visualization System Based on Dry Coupling Ultrasonic Method.

Y Yuan, D Zhang, U Sayed, H Zhu… - Journal of …, 2023 - cdn.techscience.cn
In order to optimize the wood internal quality detection and evaluation system and improve
the comprehensive utilization rate of wood, this paper invented a set of log internal defect …