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Computer Methods in Applied Mechanics and Engineering
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In this article, a cubic Hermite collocation scheme for the solution of the coupled integro-partial differential equations governing the propagation of a hydraulic fracture in a state of plane strain is described.Abstract:
article i nfo We describe a novel cubic Hermite collocation scheme for the solution of the coupled integro-partial differential equations governing the propagation of a hydraulic fracture in a state of plane strain. Special blended cubic Hermite-power-law basis functions, with arbitrary index 0b αb1, are developed to treat the singular behavior of the solution that typically occurs at the tips of a hydraulic fracture. The implementation of blended infinite elements to model semi-infinite crack problems is also described. Explicit formulae for the integrated kernels associated with the cubic Hermite and blended basis functions are provided. The cubic Hermite collocation algorithm is used to solve a number of different test problems with two distinct propagation regimes and the results are shown to converge to published similarity and asymptotic solutions. The convergence rate of the cubic Hermite scheme is determined by the order of accuracy of the tip asymptotic expansion as well as the O(h 4 ) error due to the Hermite cubic interpolation. The errors due to these two approximations need to be matched in order to achieve optimal convergence. Backward Euler time-stepping yields a robust algorithm that, along with geometric increments in the time-step, can be used to explore the transition between propagation regimes over many orders of magnitude in time.read more
Citations
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DissertationDOI
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Proceedings ArticleDOI
Reduced order aerodynamics for delta wing pitching oscillations
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Comparison of Field Transfer Methods between two meshes
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Journal Article
Simulation and Modeling of the Effect of Welding Process Parameters of Inconel 625
TL;DR: In this paper, the effect of welding parameters for Inconel 625 alloy such as stress and temperature distribution was examined by conducting design of experiments (DOE) for three levels of welding current (100-120 A), voltage (10-14 V) and speed (75-150 mm/min).
Proceedings ArticleDOI
MPIActor - A Multicore-Architecture Adaptive and Thread-Based MPI Program Accelerator
TL;DR: A novel technique, called MPI Accelerator or MPIActor in short, which is a transparent middleware to enhance conventional MPI libraries and can be significantly improved by using OSU_LATENCY benchmark for point-to-point communications or IMB Reduce benchmark for reduction collectives.
References
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An Introduction to Fluid Dynamics
TL;DR: The dynamique des : fluides Reference Record created on 2005-11-18 is updated on 2016-08-08 and shows improvements in the quality of the data over the past decade.
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A practical guide to splines
TL;DR: This book presents those parts of the theory which are especially useful in calculations and stresses the representation of splines as linear combinations of B-splines as well as specific approximation methods, interpolation, smoothing and least-squares approximation, the solution of an ordinary differential equation by collocation, curve fitting, and surface fitting.
Numerical solution of boundary value problems for ordinary differential equations
TL;DR: In this article, the Riccati method is used to solve boundary value problems for Ordinary Differential Equations and to solve nonlinear problems for BVPSs in the standard form.
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Numerical solution of boundary value problems for ordinary differential equations
TL;DR: This book discusses Consistency, Stability, and Convergence higher-Order One-Step Schemes Collocation Theory Acceleration Techniques Higher-Order ODEs Finite Element Methods and Initial Value Methods.
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