Solution and sensitivity analysis of nonlinear equations using a hypercomplex-variable Newton-Raphson method

M Aristizabal, JL Hernández-Estrada, M Garcia… - Applied Mathematics …, 2023 - Elsevier
Abstract The classical Newton-Raphson (NR) method for solving nonlinear equations is
enhanced in two ways through the use of hypercomplex variables and algebra. In particular …

Fatigue crack growth analysis under constant amplitude loading using finite element method

AM Alshoaibi - Materials, 2022 - mdpi.com
Damage tolerant design relies on accurately predicting the growth rate and path of fatigue
cracks under constant and variable amplitude loading. ANSYS Mechanical R19. 2 was used …

[HTML][HTML] Sensitivity analysis for transient thermal problems using the complex-variable finite element method

JS Rincon-Tabares, JC Velasquez-Gonzalez… - Applied Sciences, 2022 - mdpi.com
Solving transient heat transfer equations is required to understand the evolution of
temperature and heat flux. This physics is highly dependent on the materials and …

A block forward substitution method for solving the hypercomplex finite element system of equations

AM Aguirre-Mesa, MJ Garcia, M Aristizabal… - Computer Methods in …, 2021 - Elsevier
The hypercomplex finite element method, ZFEM, allows the analyst to compute highly-
accurate arbitrary-order shape, material property, and loading derivatives by augmenting the …

Arbitrary-Order sensitivity analysis in phononic metamaterials using the multicomplex taylor series expansion method coupled with bloch's theorem

JD Navarro, HR Millwater… - Journal of Applied …, 2022 - asmedigitalcollection.asme.org
Phononic metamaterials (PMs) exhibit frequency ranges at which elastic waves are
attenuated called band gaps. However, this phenomenon is highly sensitive to geometrical …

Arbitrary-Order Sensitivity Analysis in Wave Propagation Problems Using Hypercomplex Spectral Finite Element Method

JD Navarro, JC Velasquez-Gonzalez, M Aristizabal… - AIAA Journal, 2024 - arc.aiaa.org
Many modern structural health monitoring (SHM) systems use piezoelectric transducers to
induce and measure guided waves propagating in structures for structural damage …

Mixed-mode stress intensity factors computation in functionally graded materials using a hypercomplex-variable finite element formulation

D Ramirez-Tamayo, M Balcer, A Montoya… - International Journal of …, 2020 - Springer
The hypercomplex-variable finite element method, ZFEM, is extended to compute the mode I
and mode II energy release rates (ERR) for functionally graded materials. The ERR is …

Arbitrary-Order Sensitivity Analysis of Eigenfrequency Problems with Hypercomplex Automatic Differentiation (HYPAD)

JC Velasquez-Gonzalez, JD Navarro, M Aristizabal… - Applied Sciences, 2023 - mdpi.com
Featured Application Sensitivity analysis of the modal response in structural systems.
Abstract The calculation of accurate arbitrary-order sensitivities of eigenvalues and …

[HTML][HTML] Adaptive finite element model for simulating crack growth in the presence of holes

AM Alshoaibi, YA Fageehi - Materials, 2021 - mdpi.com
This study presents a developed finite element code written by Visual Fortran to
computationally model fatigue crack growth (FCG) in arbitrary 2D structures with constant …

Sensitivity analysis of electro-mechanical properties of soft and hard piezoelectrics using the complex finite element method

CA Acosta, A Bhalla, R Guo - Ferroelectrics, 2023 - Taylor & Francis
The sensitivity analysis of the anisotropic properties for PZT-4 and PZT-5 have been
performed using the complex variable finite element method (ZFEM) on a two-dimensional …