Gotowe bibliografie tematyczne / Quadratic Time Finite Element Method

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  1. Artykuły w czasopismach
  2. Rozprawy doktorskie
  3. Książki
  4. Części książek
  5. Streszczenia konferencji
  6. Raporty organizacyjne

Gotowa bibliografia na temat „Quadratic Time Finite Element Method”

Autor: Grafiati
Data publikacji: 6 września 2023
Data aktualizacji: 19 lipca 2025

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Artykuły w czasopismach na temat "Quadratic Time Finite Element Method"

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Agrawal, Manish, and C. S. Jog. "A quadratic time finite element method for nonlinear elastodynamics within the context of hybrid finite elements." Applied Mathematics and Computation 305 (July 2017): 203–20. http://dx.doi.org/10.1016/j.amc.2017.01.059.

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Tang, Qiong, Luohua Liu, and Yujun Zheng. "Continuous Finite Element Methods of Molecular Dynamics Simulations." Modelling and Simulation in Engineering 2015 (2015): 1–8. http://dx.doi.org/10.1155/2015/904140.

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Molecular dynamics simulations are necessary to perform very long integration times. In this paper, we discuss continuous finite element methods for molecular dynamics simulation problems. Our numerical results aboutABdiatomic molecular system andA2Btriatomic molecules show that linear finite element and quadratic finite element methods can better preserve the motion characteristics of molecular dynamics, that is, properties of energy conservation and long-term stability. So finite element method is also a reliable method to simulate long-time classical trajectory of molecular systems.
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Mahesh, S., Schiffel Marco, Ramesh S. Sharma, MK Praveenkumar, Vishal Wadagavi, and Lakshminarasimhan Subbarao. "A machine learning approach to predict the stress results of quadratic tetrahedral elements." Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science 236, no. 2 (2021): 1128–35. http://dx.doi.org/10.1177/09544062211010828.

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Industries are always looking for an effective and efficient way to reduce the computation time of simulation because of the huge expenditure involved. From basics of Finite Element Method (FEM), it is known that, linear order finite elements consume less computation time and are less accurate compared to higher order finite elements say quadratic elements. An approach to get the benefit of less computation cost of linear elements and the good accuracy of quadratic elements can be of a good thought. The methodology to get the accurate results of quadratic elements with the advantage of less si
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Akpobi, John A., and E. D. Akpobi. "Development of a Model for Analysing Radial Flow of Slightly Compressible Fluids." Advanced Materials Research 62-64 (February 2009): 629–36. http://dx.doi.org/10.4028/www.scientific.net/amr.62-64.629.

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In this work, we develop a finite element-finite difference method to solve the differential equation governing the radial flow of slightly compressible fluids. The finite element method is used to carry out spatial approximations so as to study the variation of fluid properties at the various nodes to which effect we divided the entire radial domain of the fluid into a mesh of four radial 1-D quadratic elements which exposes nine nodes to intense study. Time approximation is done with the aid of the Crank-Nicolson finite difference scheme.
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Harari, Isaac, and Danny Avraham. "High-Order Finite Element Methods for Acoustic Problems." Journal of Computational Acoustics 05, no. 01 (1997): 33–51. http://dx.doi.org/10.1142/s0218396x97000046.

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The goal of this work is to design and analyze quadratic finite elements for problems of time-harmonic acoustics, and to compare the computational efficiency of quadratic elements to that of lower-order elements. Non-reflecting boundary conditions yield an equivalent problem in a bounded region which is suitable for domain-based computation of solutions to exterior problems. Galerkin/least-squares technology is utilized to develop robust methods in which stability properties are enhanced while maintaining higher-order accuracy. The design of Galerkin/least-squares methods depends on the order
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Purba, Baby, Roesyanto Roesyanto, Gina Cyntia Raphita, and Rudianto Surbakti. "Analisis Konsolidasi dengan Metode Preloading dikombinasikan dengan PVD berdasarkan Perhitungan Analitis dan Plaxis 2d." Jurnal Syntax Admiration 3, no. 12 (2022): 1569–85. http://dx.doi.org/10.46799/jsa.v3i12.518.

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Soft soil has poor soil characteristics. These soils generally have high compressibility, low permeability and low carrying capacity. Soil improvement by preloading and PVD is one of the common soil improvement methods to speed up the process of soil consolidation. The initial loading is carried out with the aim of consolidating the soft soil layer with the same or more loading amount than the load that will be carried by the soil both during and after construction. While vertical drainage can speed up the consolidation process. This analysis aims to determine the magnitude of consolidation se
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Bentahar, Mohammed. "Fatigue Analysis of an Inclined Crack Propagation Problem by the X-FEM Method." International Journal of Applied and Structural Mechanics, no. 34 (June 30, 2023): 23–31. http://dx.doi.org/10.55529/ijasm.34.23.31.

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The extended finite element method (X-FEM) has been used to solve fracture mechanics, problems in materials with various behavior laws (for example, isotropic, orthotropic or piezoelectric materials... For each type of material, it is necessary to obtain “enrichment functions” which model the behavior of the fields of displacement and stresses in the vicinity of the front of crack. In this paper, fatigue crack propagation analysis was modeled, by the extended finite element method X-FEM to evaluate the total energy and strain energy at the angled crack length, and to have the development of th
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Tang, Y., and Y. Hua. "Superconvergence of Fully Discrete Finite Elements for Parabolic Control Problems with Integral Constraints." East Asian Journal on Applied Mathematics 3, no. 2 (2013): 138–53. http://dx.doi.org/10.4208/eajam.240313.280513a.

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AbstractA quadratic optimal control problem governed by parabolic equations with integral constraints is considered. A fully discrete finite element scheme is constructed for the optimal control problem, with finite elements for the spatial but the backward Euler method for the time discretisation. Some superconvergence results of the control, the state and the adjoint state are proved. Some numerical examples are performed to confirm theoretical results.
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SINGH, CHANDAN, and EKTA WALIA. "FAST HYBRID SHADING: AN APPLICATION OF FINITE ELEMENT METHODS IN 3D RENDERING." International Journal of Image and Graphics 05, no. 04 (2005): 789–810. http://dx.doi.org/10.1142/s0219467805002002.

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This paper is an attempt to improve the quality of Gouraud shading with minimum increase in the computation requirements. It presents algorithms for intermediate quality shading i.e. the quality of shading is better than Gouraud shading and nearly comparable to the quality of bi-quadratic Phong shading, at the same time, algorithms are very fast as compared to bi-quadratic Phong shading. Three algorithms are discussed. The first algorithm uses hybrid shading in which bi-quadratic interpolation of intensity is performed on the edges of a triangle and linear interpolation of intensity is perform
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Pineda, E., M. H. Aliabadi, and Janis Zapata. "The Boundary Element Method Applied to Visco-Plastic Analysis." Key Engineering Materials 449 (September 2010): 37–45. http://dx.doi.org/10.4028/www.scientific.net/kem.449.37.

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This paper presents a new formulation of the Dual Boundary Element Method to visco-plastic problems in a two-dimensional analysis. Visco-plastic stresses and strains around the crack tip are obtained until the visco-plastic strain rate reaches the steady state condition. A perfect visco-plastic analysis is also carried out in linear strain hardening (H’=0) materials. Part of the domain, the part that is susceptible to yield is discretized into quadratic, quadrilateral continuous cells. The loads are used to demonstrate time effects in the analysis carried out. Numerical results are compared wi
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Rozprawy doktorskie na temat "Quadratic Time Finite Element Method"

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Valivarthi, Mohan Varma, and Hema Chandra Babu Muthyala. "A Finite Element Time Relaxation Method." Thesis, Högskolan i Halmstad, Sektionen för Informationsvetenskap, Data– och Elektroteknik (IDE), 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:hh:diva-17728.

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In our project we discuss a finite element time-relaxation method for high Reynolds number flows. The key idea consists of using local projections on polynomials defined on macro element of each pair of two elements sharing a face. We give the formulation for the scalar convection–diffusion equation and a numerical illustration.
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Alpert, David N. "Enriched Space-Time Finite Element Methods for Structural Dynamics Applications." University of Cincinnati / OhioLINK, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1377870451.

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Kashefi, Ali. "A Finite-Element Coarse-GridProjection Method for Incompressible Flows." Thesis, Virginia Tech, 2017. http://hdl.handle.net/10919/79948.

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Coarse grid projection (CGP) methodology is a novel multigrid method for systems involving decoupled nonlinear evolution equations and linear elliptic Poisson equations. The nonlinear equations are solved on a fine grid and the linear equations are solved on a corresponding coarsened grid. Mapping operators execute data transfer between the grids. The CGP framework is constructed upon spatial and temporal discretization schemes. This framework has been established for finite volume/difference discretizations as well as explicit time integration methods. In this article we present for the first
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Wang, Bao. "Numerical Simulation of Detonation Initiation by the Space-Time Conservation Element and Solution Element Method." The Ohio State University, 2010. http://rave.ohiolink.edu/etdc/view?acc_num=osu1293461692.

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Dosopoulos, Stylianos. "Interior Penalty Discontinuous Galerkin Finite Element Method for the Time-Domain Maxwell's Equations." The Ohio State University, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=osu1337787922.

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Nagai, Toshiki. "Space-time Extended Finite Element Method with Applications to Fluid-structure Interaction Problems." Thesis, University of Colorado at Boulder, 2018. http://pqdtopen.proquest.com/#viewpdf?dispub=10844711.

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<p> This thesis presents a space-time extended finite element method (space-time XFEM) based on the Heaviside enrichment for transient problems with moving interfaces, and its applications to the fluid-structure interaction (FSI) analysis. The Heaviside-enriched XFEM is a promising method to discretize partial differential equations with discontinuities in space. However, significant approximation errors are introduced by time stepping schemes when the interface geometry changes in time. The proposed space-time XFEM applies the finite element discretization and the Heaviside enrichment in both
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Vikas, Sharma. "Development of Space-Time Finite Element Method for Seismic Analysis of Hydraulic Structures." Kyoto University, 2018. http://hdl.handle.net/2433/235094.

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Kyoto University (京都大学)<br>0048<br>新制・課程博士<br>博士(農学)<br>甲第21374号<br>農博第2298号<br>新制||農||1066(附属図書館)<br>学位論文||H30||N5147(農学部図書室)<br>京都大学大学院農学研究科地域環境科学専攻<br>(主査)教授 村上 章, 教授 藤原 正幸, 教授 渦岡 良介<br>学位規則第4条第1項該当
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KALARICKEL, RAMAKRISHNAN PRAVEEN. "Reliability of finite element method for time harmonic electromagnetic problems involving moving bodies." Doctoral thesis, Università degli studi di Genova, 2018. http://hdl.handle.net/11567/930777.

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This work is mainly concerned about the time-harmonic electromagnetic problems involving moving bodies. Such a formulation is possible when the boundaries between different moving objects are stationary and the sources involved are time-harmonic. Even simple media present bianisotropic properties when they are in motion. This kind of problems find applications in diverse fields. Numerical solution is required for most of the practical problems. We examined the reliability of finite element simulator developed for solving such problems.
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Campbell-Kyureghyan, Naira Helen. "Computational analysis of the time-dependent biomechanical behavior of the lumbar spine." Connect to this title online, 2004. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1095445065.

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Thesis (Ph. D.)--Ohio State University, 2004.<br>Title from first page of PDF file. Document formatted into pages; contains xix, 254 p.; also includes graphics. Includes bibliographical references (p. 234-254).
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Wang, Shumin. "Improved-accuracy algorithms for time-domain finite methods in electromagnetics." The Ohio State University, 2003. http://rave.ohiolink.edu/etdc/view?acc_num=osu1061225243.

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Książki na temat "Quadratic Time Finite Element Method"

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Ruas, Vitoriano. A quadratic finite element method for solving biharmonic problems in IRn. Pontifícia Universidade Catolica do Rio de Janeiro, 1986.

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Lin-Jun, Hou, and Langley Research Center, eds. Periodic trim solutions with hp-version finite elements in time: Final report. School of Aerospace Engineering, Georgia Institute of Technology, 1990.

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Golla, D. F. Dynamics of viscoelastic structures - a time-domain, finite element formulation. [s.n.], 1985.

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Golla, David Frank. Dynamics of viscoelastic structures: a time-domain finite element formulation. [Institute for Aerospace Studies], 1985.

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United States. National Aeronautics and Space Administration. Scientific and Technical Information Division., ed. Time-domain finite elements in optimal control with application to launch-vehicle guidance. National Aeronautics and Space Administration, Office of Management, Scientific and Technical Information Division, 1991.

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United States. National Aeronautics and Space Administration. Scientific and Technical Information Division., ed. Time-domain finite elements in optimal control with application to launch-vehicle guidance. National Aeronautics and Space Administration, Office of Management, Scientific and Technical Information Division, 1991.

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Golla, David Frank. Dynamics of viscoelastic structures: A time-domain finite element formulation. Institute for Aerospace Studies, 1986.

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George, Alan. An analysis of spectral envelope-reduction via quadratic assignment problems. Institute for Computer Applications in Science and Engineering, NASA Langley Research Center, 1994.

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George, Alan. An analysis of spectral envelope-reduction via quadratic assignment problems. Institute for Computer Applications in Science and Engineering, NASA Langley Research Center, 1994.

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Bless, Robert R. Time-domain finite elements in optimal control with application to launch-vehicle guidance. Langley Research Center, 1991.

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Części książek na temat "Quadratic Time Finite Element Method"

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Bajer, Czesław I., and Bartłomiej Dyniewicz. "Space-Time Finite Element Method." In Numerical Analysis of Vibrations of Structures under Moving Inertial Load. Springer Berlin Heidelberg, 2012. http://dx.doi.org/10.1007/978-3-642-29548-5_6.

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Singh, Shalvi, and tam Chakraborty. "Quadratic Wachspress Shape functions for polygonal finite element method." In Aerospace and Associated Technology. Routledge, 2022. http://dx.doi.org/10.1201/9781003324539-21.

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Raiyan Kabir, S. M., B. M. A. Rahman, and A. Agrawal. "Finite Element Time Domain Method for Photonics." In Recent Trends in Computational Photonics. Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-55438-9_1.

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Thomée, Vidar. "The Discontinuous Galerkin Time Stepping Method." In Galerkin Finite Element Methods for Parabolic Problems. Springer Berlin Heidelberg, 1997. http://dx.doi.org/10.1007/978-3-662-03359-3_12.

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Cardoso, José Roberto. "Finite Element Method for Time-Dependent Electromagnetic Fields." In Electromagnetics Through the Finite Element Method. CRC Press, 2016. http://dx.doi.org/10.1201/9781315366777-5.

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Witkowski, M. "The Fundamentals of the Space-Time Finite Element Method." In Engineering Software IV. Springer Berlin Heidelberg, 1985. http://dx.doi.org/10.1007/978-3-662-21877-8_22.

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Zahedi, Sara. "A Space-Time Cut Finite Element Method with Quadrature in Time." In Lecture Notes in Computational Science and Engineering. Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-71431-8_9.

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Geers, T. L. "A Fully Consistent Formulation of Early-Time Approximations for Acoustic Media." In The finite element method in the 1990’s. Springer Berlin Heidelberg, 1991. http://dx.doi.org/10.1007/978-3-662-10326-5_53.

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Gurusamy, Arumugam. "Finite Element Method for Time Fractional Keller–Segel Chemotaxis System." In Lecture Notes in Electrical Engineering. Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-45474-0_39.

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Hochbruck, Marlis, and Christian Stohrer. "Finite Element Heterogeneous Multiscale Method for Time-Dependent Maxwell’s Equations." In Lecture Notes in Computational Science and Engineering. Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-65870-4_18.

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Streszczenia konferencji na temat "Quadratic Time Finite Element Method"

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Zhu, Zhenjin, Nima Tajallipour, Patrick J. Teevens, Huibin Xue, and Frank Y. F. Cheng. "A Mechanistic Model for Predicting Localized Pitting Corrosion in a Brine Water-CO2 System." In CORROSION 2011. NACE International, 2011. https://doi.org/10.5006/c2011-11256.

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Abstract This paper proposes a Finite-Element-Analysis-based mechanistic model to predict internal localized pitting corrosion rates of petroleum pipelines in sweet (CO2) production environments. In this model, the computational domain consisted of a hemispherical pit and a thin boundary layer of an electrolyte solution. The mesh was generated using quadratic triangular elements in the Cartesian coordinate system whereas a moving mesh method was utilized to track the dynamic pitting propagation. The flux rate of each participating chemical ionic species was computed by solving the Nernst-Planc
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Pernet, S., X. Ferrieres, and G. Cohen. "An Original Finite Element Method to Solve Maxwell's Equations in Time Domain." In 15th International Zurich Symposium and Technical Exposition on Electromagnetic Compatibility. IEEE, 2003. https://doi.org/10.23919/emc.2003.10806302.

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Pressburger, Yoram, Renato Perucchio, and David A. Field. "A Two-Level Multigrid Algorithm for Solving 3-D Quadratic Finite Element Models." In ASME 1991 International Computers in Engineering Conference and Exposition. American Society of Mechanical Engineers, 1991. http://dx.doi.org/10.1115/cie1991-0098.

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Abstract A two-level multigrid algorithm for solving a quadratic finite element models containing tetrahedral meshes is presented. The basic idea is to generate two nested finite element models, first a linear model and then a quadratic one embedded hierarchically into the linear one. The exact solution to the linear model is computed and a two-level iterative procedure is used to solve for the quadratic model. In particular, the Successive Over Relaxation (SOR) method is used for the smoothing iteration on the quadratic model in each two-level cycle. A numerical study is carried out to determ
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Emery, Ashley F., and Walter Dauksher. "The Dispersion in Finite Element Solutions to the One-Dimensional Heat Equation." In ASME 1999 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 1999. http://dx.doi.org/10.1115/imece1999-1085.

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Abstract A method for evaluating the numerically introduced dispersion in finite element solutions to the one-dimensional heat equation is presented. The dispersion is quantified for linear and quadratic elements as a function of time step, mesh refinement and capacitance matrix formulation. It is demonstrated that an analysis of the dispersion is a useful tool in estimating the accuracy and in understanding the behavior of the numerical algorithm.
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Apte, Shrinivas G., and Brian H. Dennis. "Pseudo Compressible Mixed Interpolation Finite Element Method for Solving Three Dimensional Navier-Stokes Equations." In ASME 2013 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/detc2013-13484.

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A pseudo compressible finite element method for solving three dimensional incompressible Navier-Stokes equations is presented. A physical problem discretized using tetrahedral elements with linear and quadratic interpolation functions for pressure and velocity variables respectively is then marched in time by using implicit time marching scheme based on finite differencing. The possible formation of indefinite matrix due to incompressibility constraint is avoided by inserting an artificial/pseudo time dependent term (Chorin, 1974) into the continuity equation that is eliminated when steady sta
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Dargush, G. F., and M. M. Grigoriev. "Higher-Order Boundary Element Methods for Unsteady Convective Transport." In ASME 2001 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2001. http://dx.doi.org/10.1115/imece2001/htd-24105.

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Abstract Higher-order boundary element methods (BEM) are presented for time-dependent convective diffusion problems. The time-dependent convective diffusion free-space fundamental solutions originally proposed by Carslaw and Jaeger are used to obtain the boundary integral formulation. For the linear, quadratic and quartic time interpolation functions considered in this paper, a complete set of closed form time integrals for the one-dimensional formulation are developed. Boundary element method solutions are obtained for four problems of unsteady convection-diffusion, including shock wave propa
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Mehraban, Arash, Jed Brown, Valeria Barra, Henry Tufo, Jeremy Thompson, and Richard Regueiro. "Efficient Residual and Matrix-Free Jacobian Evaluation for Three-Dimensional Tri-Quadratic Hexahedral Finite Elements With Nearly-Incompressible Neo-Hookean Hyperelasticity Applied to Soft Materials on Unstructured Meshes in Parallel, With PETSc and libCEED." In ASME 2020 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2020. http://dx.doi.org/10.1115/imece2020-24522.

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Abstract Soft materials such as rubber, elastomers, and soft biological tissues mechanically deform at large strain isochorically for all time, or during their initial transient (when a pore fluid, typically incompressible such as water, does not have time to flow out of the deforming polymer or soft tissue porous skeleton). Simulating these large isochoric deformations computationally, such as with the Finite Element Method (FEM), requires higher order (typically quadratic) interpolation functions and/or enhancements through hybrid/mixed methods to maintain stability. Lower order (linear) fin
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Darbandi, M., and Y. Daghighi. "Computation of Rarefied Gaseous Flows in Micro to Nano Scale Channels With Slip to Transient Regimes Using General Second-Order Quadratic Elements." In ASME 2008 6th International Conference on Nanochannels, Microchannels, and Minichannels. ASMEDC, 2008. http://dx.doi.org/10.1115/icnmm2008-62155.

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A new finite-volume-based finite-element method using the quadratic elements is developed in the present study, to analyze the flow in micro and nano sizes with higher-order slip boundary conditions. The method is applied to gaseous flow in micro and nanoscale-channels. The developed method is carried out over a wide range of Knudsen numbers, which cover not only the continuum slip flow regime with 0≤Kn≤0.1 but also it entire the range of transient regime with 0.1&lt;Kn≤10. To make the present computational model capable of simulating micro and nano sizes with the help of the Navier-Stokes equ
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Dwivedi, Aakash Dhar, and R. Marimuthu. "Stochastic Finite Element Formulation of a Three-Node Quadratic Bar Element with Non-Uniform Cross-Section Based on the Perturbation Method for Simultaneously Non-Deterministic Elastic Modulus and Applied Load." In AeroCON 2024. SAE International, 2024. http://dx.doi.org/10.4271/2024-26-0470.

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&lt;div class="section abstract"&gt;&lt;div class="htmlview paragraph"&gt;The finite element method (FEM) is one of the most robust tools in structural analysis. Typically, the input parameters in a finite element model are assumed to be deterministic. However, in practice, almost all material and geometrical properties, including the load, possess randomness. The consideration of the probabilistic nature of these quantities is essential to effectively designing a system that is robust against the uncertainties arising due to the variation in the input parameters, the significance of which has
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Murakami, Hidenori, Oscar Rios, and Takeyuki Ono. "Development of a Nonlinear, C1-Beam Finite-Element Code for Actuator Design of Slender Flexible Robots." In ASME 2017 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/imece2017-70106.

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For actuator design and motion simulations of slender flexible robots, planar C1-beam elements are developed for Reissner’s large deformation, shear-deformable, curbed-beam model. Internal actuation is mechanically modeled by a rate-form of beam constitutive relation, where actuation curvature is prescribed at each time. Geometrically, a curbed beam is modeled as a frame bundle, whereby at each point on beam’s curve of centroids a moving orthonormal frame is attached to a cross section. After a finite element discretization, a curve of centroids is modeled as a C1-curve, employing cubic shape
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Raporty organizacyjne na temat "Quadratic Time Finite Element Method"

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Ewsuk, K. G., J. G. Arguello, Jr, D. H. Zeuch, and A. F. Fossum. Real-Time Design of Improved Powder Pressing Dies Using Finite Element Method Modeling. Office of Scientific and Technical Information (OSTI), 2000. http://dx.doi.org/10.2172/773876.

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Rieben, Robert N. A Novel High Order Time Domain Vector Finite Element Method for the Simulation of Electromagnetic Devices. Office of Scientific and Technical Information (OSTI), 2004. http://dx.doi.org/10.2172/15014486.

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Perez-Rivera, Anthony, Jonathan Trovillion, Peter Stynoski, and Jeffrey Ryan. Simulated barge impacts on fiber-reinforced polymers (FRP) composite sandwich panels : dynamic finite element analysis (FEA) to develop force time histories to be used on experimental testing. Engineer Research and Development Center (U.S.), 2024. http://dx.doi.org/10.21079/11681/48080.

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The purpose of this study is to evaluate the dynamic response of fiber-reinforced polymer (FRP) composite sandwich panels subjected to typical barge impact masses and velocities to develop force time histories that can be used in controlled experimental testing. Dynamic analyses were performed on FRP composite sandwich panels using the finite element method software Abaqus/Explicit. The “traction-separation” law in the Abaqus software is used to define the cohesive surface interaction properties to evaluate the damage between FRP composite laminate layers as well as the core separation within
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Michalopoulos, C. D. PR-175-420-R01 Submarine Pipeline Analysis - Theoretical Manual. Pipeline Research Council International, Inc. (PRCI), 1985. http://dx.doi.org/10.55274/r0012171.

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Describes the computer program SPAN which computes the nonlinear transient response of a submarine pipeline, in contact with the ocean floor, to wave and current excitation. The dynamic response of a pipeline to impact loads, such as loads from trawl gear of fishing vessels, may also be computed. In addition, thermal expansion problems for submarine pipelines may be solved using SPAN. Beam finite element theory is used for spatial discretization of the partial differential equations governing the motion of a submarine pipeline. Large-deflection, small-strain theory is employed. The formulation
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Guan, Jiajing, Sophia Bragdon, and Jay Clausen. Predicting soil moisture content using Physics-Informed Neural Networks (PINNs). Engineer Research and Development Center (U.S.), 2024. http://dx.doi.org/10.21079/11681/48794.

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Environmental conditions such as the near-surface soil moisture content are valuable information in object detection problems. However, such information is generally unobtainable at the necessary scale without active sensing. Richards’ equation is a partial differential equation (PDE) that describes the infiltration process of unsaturated soil. Solving the Richards’ equation yields information about the volumetric soil moisture content, hydraulic conductivity, and capillary pressure head. However, Richards’ equation is difficult to approximate due to its nonlinearity. Numerical solvers such as
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Yan, Yujie, and Jerome F. Hajjar. Automated Damage Assessment and Structural Modeling of Bridges with Visual Sensing Technology. Northeastern University, 2021. http://dx.doi.org/10.17760/d20410114.

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Recent advances in visual sensing technology have gained much attention in the field of bridge inspection and management. Coupled with advanced robotic systems, state-of-the-art visual sensors can be used to obtain accurate documentation of bridges without the need for any special equipment or traffic closure. The captured visual sensor data can be post-processed to gather meaningful information for the bridge structures and hence to support bridge inspection and management. However, state-of-the-practice data postprocessing approaches require substantial manual operations, which can be time-c
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Zhu, Xian-Kui, and Bruce Wiersma. PR-644-213803-R01 Fatigue Life Models for Pipeline Containing Dents and Gouges. Pipeline Research Council International, Inc. (PRCI), 2022. http://dx.doi.org/10.55274/r0012248.

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Fatigue failure is a time-delayed failure that is one of the major threats to the pipeline integrity. For crack-like gouges in dents, the crack grows due to pressure cycling and eventually fails by fatigue. This work, which was funded by PRCI via Project MD-4-16, developed a viable engineering approach and a pragmatic fatigue model for predicting fatigue life of dents and gouges in pipelines. In particular, an equivalent stress method was developed with use of finite element analysis (FEA), and the crack driving force was determined based on the FEA results and the stress intensity factors (SI
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Tarasova, Anna, Deven Kanakamedala, Jungil Seo, Amit H. Varma, and Robert J. Connor. New Repair Strategies for Life-Cycle Extension of Corroded Steel Girder Bridges. Purdue University, 2025. https://doi.org/10.5703/1288284317748.

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Steel girder ends are susceptible to corrosion damage due to deicing salts, water, and other contaminants leaking from failed expansion joints. When corrosion becomes significant, it leads to a reduction in the sectional properties of steel girders and consequently reduces bearing and shear resistance. Conventional repair methods, although effective, require substantial time and resources to complete, causing public inconvenience from necessary traffic closures. Therefore, there is a need for practical, rapid, and robust repair methods suitable for implementation by local Department of Transpo
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Al-Qadi, Imad, Egemen Okte, Aravind Ramakrishnan, Qingwen Zhou, and Watheq Sayeh. Truck Platooning on Flexible Pavements in Illinois. Illinois Center for Transportation, 2021. http://dx.doi.org/10.36501/0197-9191/21-010.

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Truck platoons have many benefits over traditional truck mobility. Truck platoons have the potential to improve safety and reduce fuel consumption between 5% and 15%, based on platoon configuration. In Illinois, trucks carry more than 50% of freight tonnage and constitute 25% of the traffic on interstates. Therefore, expected fuel savings would be significant for trucks. Deployment of truck platoons within interstate highways may have a direct effect on flexible pavement performance, as the time between consecutive axle loads (i.e., resting time) is expected to decrease significantly. Moreover
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Ramakrishnan, Aravind, Ashraf Alrajhi, Egemen Okte, Hasan Ozer, and Imad Al-Qadi. Truck-Platooning Impacts on Flexible Pavements: Experimental and Mechanistic Approaches. Illinois Center for Transportation, 2021. http://dx.doi.org/10.36501/0197-9191/21-038.

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Truck platoons are expected to improve safety and reduce fuel consumption. However, their use is projected to accelerate pavement damage due to channelized-load application (lack of wander) and potentially reduced duration between truck-loading applications (reduced rest period). The effect of wander on pavement damage is well documented, while relatively few studies are available on the effect of rest period on pavement permanent deformation. Therefore, the main objective of this study was to quantify the impact of rest period theoretically, using a numerical method, and experimentally, using
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