Zobrazeno 1 - 10
of 32
pro vyhledávání: '"Harry R. Millwater"'
Autor:
Juan C. Velasquez-Gonzalez, Juan David Navarro, Mauricio Aristizabal, Harry R. Millwater, Arturo Montoya, David Restrepo
Publikováno v:
Applied Sciences, Vol 13, Iss 12, p 7125 (2023)
The calculation of accurate arbitrary-order sensitivities of eigenvalues and eigenvectors is crucial for structural analysis applications, including topology optimization, system identification, finite element model updating, damage detection, and fa
Externí odkaz:
https://doaj.org/article/310ae1c6301840f594da8f1153521958
Autor:
Harry R. Millwater, R. Wesley Osborn
Publikováno v:
International Journal of Rotating Machinery, Vol 2006 (2006)
A methodology is developed and applied that determines the sensitivities of the probability-of-fracture of a gas turbine disk fatigue analysis with respect to the parameters of the probability distributions describing the random variables. The disk m
Externí odkaz:
https://doaj.org/article/badedf7e795147d7ab3b697a8e77ae82
Autor:
Matthew Balcer, Mauricio Aristizabal, Juan Sebastian Rincon Tabares, Arturo H. Montoya, David Restrepo, Harry R. Millwater
Publikováno v:
Journal of Verification, Validation and Uncertainty Quantification. :1-45
A derivative-based Uncertainty Quantification (UQ) method called HYPAD-UQ that utilizes sensitivities from a computational model was developed to approximate the statistical moments and Sobol' indices of the model output. HYPercomplex Automatic Diffe
Autor:
Restrepo, Juan C. Velasquez-Gonzalez, Juan David Navarro, Mauricio Aristizabal, Harry R. Millwater, Arturo Montoya, David
Publikováno v:
Applied Sciences; Volume 13; Issue 12; Pages: 7125
The calculation of accurate arbitrary-order sensitivities of eigenvalues and eigenvectors is crucial for structural analysis applications, including topology optimization, system identification, finite element model updating, damage detection, and fa
Publikováno v:
Computer Methods in Applied Mechanics and Engineering. 279:247-267
In order to maintain the quadratic convergence properties of Newton’s method in quasi-static nonlinear analysis of solid structures it is crucial to obtain accurate, algorithmically consistent tangent-stiffness matrices. A goal of the study describ
Publikováno v:
Engineering Optimization. 47:979-993
Statistical estimates from simulation involve uncertainty caused by the variability in the input random variables due to limited data. Allocating resources to obtain more experimental data of the input variables to better characterize their probabili
Autor:
Michael Shiao, Harry R. Millwater, Gulshan Singh, F. Abali, Michael Reyer, Juan Ocampo, Herb Smith, Marvin Nuss
Publikováno v:
Journal of Aircraft. 48:2090-2106
Arisk assessment evaluation of the continued operational safety of the general aviationfleet canprovide important insight to the criticality/severity of a potentially serious structural issue. As such, the methodology and a computer code, SMART|LD, w
Autor:
Harry R. Millwater, Andrew Baines
Publikováno v:
52nd Aerospace Sciences Meeting.
A complex-variable finite element method (ZFEM) has been developed at the University of Texas at San Antonio to calculate derivatives of stresses, strains, displacements, and strain energy for any given geometry. ZFEM allows users to calculate deriva
Publikováno v:
54th AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference.
The complex variable finite element method, herein called ZFEM, provides sensitivity information as a byproduct of the analysis in addition to the traditional finite element output. ZFEM is based on the Complex Taylor Series Method (CTSE). In this ca
Publikováno v:
53rd AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference20th AIAA/ASME/AHS Adaptive Structures Conference14th AIAA.
General Aviation structural risk assessment is of vital importance to ensure airworthiness and safety. However, it is even more important to understand the role of all the different variables and their importance or sensitivity over the airplane life