Open Access
ABSTRACT
Fu-pen Chiang
The International Conference on Computational & Experimental Engineering and Sciences, Vol.16, No.3, pp. 65-66, 2011, DOI:10.3970/icces.2011.016.065
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Open Access
ABSTRACT
A.P. Selvadurai
The International Conference on Computational & Experimental Engineering and Sciences, Vol.16, No.3, pp. 67-68, 2011, DOI:10.3970/icces.2011.016.067
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ABSTRACT
Raimund Rolfes, Steffen Czichon, Benedikt Kriegesmann, Heiko Kruger, Matthias Vogler, Eelco Jansen
The International Conference on Computational & Experimental Engineering and Sciences, Vol.16, No.3, pp. 69-70, 2011, DOI:10.3970/icces.2011.016.069
Abstract Recent work carried out at the Institute of Structural Analysis of the Leibniz University Hannover in the field of composite materials and composite structures is presented. Analysis tools for composite materials and structures are under development, which enable a robust and cost efficient design. Three key areas for design and analysis of composite structures will be covered in the presentation, namely strength, stability, and fatigue analysis.
Predicting the material properties of imperfect composite structures with manufacturing defects such as waviness defects or porosities is still an open challenge. Several analytical approaches exist to determine the reduction of elastic properties… More >
Open Access
ABSTRACT
Ju E Yang, Qiya Hu, Dehao Yu
The International Conference on Computational & Experimental Engineering and Sciences, Vol.16, No.3, pp. 71-72, 2011, DOI:10.3970/icces.2011.016.071
Abstract In this paper, based on the natural boundary reduction method advanced bu Feng and Yu, we are concerned with a domain decomposition method with nonmatching grids for a certain nonlinear interface problem in unbounded domains. We first discuss a new coupling of finite element and boundary element by adding an auxiliary circle. Then we use a dual basis multipier on the interface to provide the numerical analysis with nonmatching grids. Finally, we give some numerical examples further to confirm our theoretical results. More >
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ABSTRACT
X.P. Shen, A. Diaz, T. Sheehy ,
The International Conference on Computational & Experimental Engineering and Sciences, Vol.16, No.3, pp. 73-74, 2011, DOI:10.3970/icces.2011.016.073
Abstract This paper presents a case study for the design of a mud-weight window (MWW) with three-dimensional (3D) finite-element (FE) tools for subsalt wells. The trajectory of the target well penetrates a 20,000-ft thick salt body.
The numerical solution of the MWW for the target wellbore consists two parts: the shear failure gradient (SFG) and the fracture gradient (FG). Because the pore pressure and material distributions are nonuniform, the calculations of SFG and FG must be performed with submodeling techniques for a given depth point at a smaller local scale. A numerical scheme has been proposed for calculating the SFG… More >
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ABSTRACT
Frederic Y.M. Wan1
The International Conference on Computational & Experimental Engineering and Sciences, Vol.16, No.3, pp. 75-76, 2011, DOI:10.3970/icces.2011.016.075
Abstract Linear PDE are often appropriate as mathematical models for space-time biological phenomena. Among these are 1) Rall's equivalent cylinder model for cable neurons (see [1,2] and references therein), and 2) morphogen gradients with low receptor occupancy (see [3.4] and references therein). For some of these problems including cable neurons under synaptic current injection, we are interested in the system's response to stochastic excitations. The present paper offers a practical and efficient method for determining the statistical properties of the model response. For linear problems, the solution of an initial-boundary value problem in PDE is in principle given by the relevant… More >
Open Access
ABSTRACT
Ying-Hsiu Shen, Chein-Shan Liu
The International Conference on Computational & Experimental Engineering and Sciences, Vol.16, No.3, pp. 77-78, 2011, DOI:10.3970/icces.2011.016.077
Abstract When the local differential quadrature (LDQ) has been successfully applied to solve two-dimensional problems, the global method of DQ still has a problem by requiring to solve the inversions of ill-posed matrices. Previously, when one uses (n-1)th order polynomial test functions to determine the weighting coefficients with n grid points, the resultant nxn Vandermonde matrix is highly ill-conditioned and its inversion is hard to solve. Now we use (m-1)th order polynomial test functions by n grid points that the size of Vandermonde matrix is mxn, of which m is much less than n. We find that the (m-1)th order polynomial… More >
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ABSTRACT
Surya R. Kalidindi, Stephen R. Niezgoda, Ayman A. Salem
The International Conference on Computational & Experimental Engineering and Sciences, Vol.16, No.3, pp. 79-80, 2011, DOI:10.3970/icces.2011.016.079
Abstract Microstructure Informatics is a critical building block of ICME infrastructure. Accelerated design and development of new advanced materials with improved performance characteristics and their successful insertion in engineering practice are largely hindered by the lack of a rigorous mathematical framework for the robust generation of microstructure informatics relevant to the specific application. In this paper, we describe a set of novel and efficient computational protocols that are capable of accelerating significantly the process of building the needed microstructure informatics for a targeted application. These novel protocols have several advantages over the current practice in the field: (i) they allow archival,… More >
Open Access
ABSTRACT
X.H. Du, X.P. Shen
The International Conference on Computational & Experimental Engineering and Sciences, Vol.16, No.3, pp. 81-82, 2011, DOI:10.3970/icces.2011.016.081
Abstract Aim of this paper is to simulate the fluid-structure interaction of liquefied natural gas (LNG) prestressed storage tank under seismic influence. The coupled Eulerian-Lagrangian (CEL) analysis technique is used to simulate the hydrodynamic interaction between LNG and the cylinder of LNG prestressed storage tank. The 3-D model of LNG has been dispersed by Eulerian mesh which is different from traditional added mass analysis method. Meanwhile, both of the 3-D models of prestressed rebar and concrete structure are dispersed by Lagrangian mesh. Following conclusions are obtained: 1) Natural frequency of the whole model has been obtained by using the Block Lanczos… More >
Open Access
ABSTRACT
Xinpu Shen
The International Conference on Computational & Experimental Engineering and Sciences, Vol.16, No.3, pp. 83-84, 2011, DOI:10.3970/icces.2011.016.083
Abstract In practice, the mud-weight window (MWW) of a given wellbore can be designed with either two-dimensional (2D) analytical software or three-dimensional (3D) numerical finite element (FE) software. The advantage of 2D analytical tools is that they are highly efficient. Their major disadvantage is that several assumptions are adopted with the input data. These assumptions may not be accurate enough for subsalt wells. The advantage of the 3D numerical method is that it can accurately calculate the initial geo-stress field with a 3D FE model. Its major disadvantage is that it is not as efficient as the 2D method.
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