首页>
外文OA文献
>Surrogate Modeling of High-Fidelity Fracture Simulations for Real-Time Residual Strength Predictions
【2h】
Surrogate Modeling of High-Fidelity Fracture Simulations for Real-Time Residual Strength Predictions
展开▼
机译：用于实时残余强度预测的高保真断裂模拟的替代模型
展开▼
免费
页面导航
摘要
著录项
相似文献
相关主题
摘要
A surrogate model methodology is described for predicting, during flight, the residual strength of aircraft structures that sustain discrete-source damage. Starting with design of experiment, an artificial neural network is developed that takes as input discrete-source damage parameters and outputs a prediction of the structural residual strength. Target residual strength values used to train the artificial neural network are derived from 3D finite element-based fracture simulations. Two ductile fracture simulations are presented to show that crack growth and residual strength are determined more accurately in discrete-source damage cases by using an elastic-plastic fracture framework rather than a linear-elastic fracture mechanics-based method. Improving accuracy of the residual strength training data does, in turn, improve accuracy of the surrogate model. When combined, the surrogate model methodology and high fidelity fracture simulation framework provide useful tools for adaptive flight technology.
展开▼
