Results 171 to 180 of about 3,634,616 (216)
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Engineering Fracture Mechanics, 2021
Abstract An over-deterministic method based on crack-tip stress fields is proposed for evaluating stress intensity factors (SIFs) and T-stress at crack tip for mode I, mode II or mixed-mode I/II cracks under static or dynamic loading. In this method, the coordinates and stresses of the nodes around the crack tip, obtained from finite element method ...
Cheng Hou +4 more
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Abstract An over-deterministic method based on crack-tip stress fields is proposed for evaluating stress intensity factors (SIFs) and T-stress at crack tip for mode I, mode II or mixed-mode I/II cracks under static or dynamic loading. In this method, the coordinates and stresses of the nodes around the crack tip, obtained from finite element method ...
Cheng Hou +4 more
openaire +2 more sources
Theoretical and Applied Fracture Mechanics, 2021
Abstract The evaluation of the stress intensity factors (SIFs), T-stress, and higher-order coefficients in the crack tip asymptotic field in the extended finite element method (XFEM) is investigated based on the over-deterministic displacement field fitting method.
Yufei Li, Kan Zheng
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Abstract The evaluation of the stress intensity factors (SIFs), T-stress, and higher-order coefficients in the crack tip asymptotic field in the extended finite element method (XFEM) is investigated based on the over-deterministic displacement field fitting method.
Yufei Li, Kan Zheng
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Key Engineering Materials, 2014
Creation of an automatic utility to determine the values of coefficients of higher order terms of Williams power series by usage of over-deterministic method applied to results of finite element analysis is a main goal of this research. The developed procedure based on the support of Java programming language considerably simplifies analyses on ...
Jakub Sobek, T. Pail, Václav Veselý
semanticscholar +4 more sources
Creation of an automatic utility to determine the values of coefficients of higher order terms of Williams power series by usage of over-deterministic method applied to results of finite element analysis is a main goal of this research. The developed procedure based on the support of Java programming language considerably simplifies analyses on ...
Jakub Sobek, T. Pail, Václav Veselý
semanticscholar +4 more sources
Engineering Fracture Mechanics, 2020
Abstract This article applies the finite element over-deterministic (FEOD) method to determine the coefficients of the crack tip asymptotic fields in an anisotropic plane. This method relies on finding the best fit of the crack tip displacement equations to the displacements taken from a large number of nodes around the crack tip.
Majid R. Ayatollahi +2 more
openaire +2 more sources
Abstract This article applies the finite element over-deterministic (FEOD) method to determine the coefficients of the crack tip asymptotic fields in an anisotropic plane. This method relies on finding the best fit of the crack tip displacement equations to the displacements taken from a large number of nodes around the crack tip.
Majid R. Ayatollahi +2 more
openaire +2 more sources
Fatigue & Fracture of Engineering Materials & Structures, 2011
M. R. AYATOLLAHI, M. NEJATI
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M. R. AYATOLLAHI, M. NEJATI
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Computers and Chemical Engineering, 2021
Batch process control represents a challenge given its dynamic operation over a large operating envelope. Nonlinear model predictive control (NMPC) is the current standard for optimal control of batch processes.
Haeun Yoo +3 more
semanticscholar +1 more source
Batch process control represents a challenge given its dynamic operation over a large operating envelope. Nonlinear model predictive control (NMPC) is the current standard for optimal control of batch processes.
Haeun Yoo +3 more
semanticscholar +1 more source
International Conference on Machine Learning, 2023
Reinforcement Learning from Human Feedback (RLHF) is key to aligning Large Language Models (LLMs), typically paired with the Proximal Policy Optimization (PPO) algorithm.
Ziniu Li +5 more
semanticscholar +1 more source
Reinforcement Learning from Human Feedback (RLHF) is key to aligning Large Language Models (LLMs), typically paired with the Proximal Policy Optimization (PPO) algorithm.
Ziniu Li +5 more
semanticscholar +1 more source