The Experts below are selected from a list of 78 Experts worldwide ranked by ideXlab platform
Ding Xing - One of the best experts on this subject based on the ideXlab platform.
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Vectorized assembly of Stiffness Matrix for space tetrahedron element with matlab
2010Co-Authors: Ding XingAbstract:With the use of Matlab array operation,the vectorized Matlab codes of assembly of Structure Stiffness Matrix for space tetrahedron element have been developed,the procedures of which are only composed of a double cycles whose cycle number is constant and independent of total number of elements. The analysis of example shows that the vectorized Matlab codes greatly improve the operation efficiency of assembly of Structure Stiffness Matrix.
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Matlab vectorization programming method for frame elements
2010Co-Authors: Ding XingAbstract:Considering lack of FEM vectorization programming with Matlab at present,the vectorization codes,with respect to main links of FEM static analysis with frame elements in post and pre treatment methods,have been written based on comprehensive application of built-in functions,vector subscript and logic array,etc.These codes are concise and efficient,concerned with assembling of Structure Stiffness Matrix and load vector and treatment of support conditions.They have been verified with Matlab and can be used in both plane frames and space frames,or in other FEM programs directly or with appropriate modification.
Eric M. Lui - One of the best experts on this subject based on the ideXlab platform.
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A parallel frontal solver on the alliant FX/80
Computers & Structures, 1991Co-Authors: Weiping Zhang, Eric M. LuiAbstract:Abstract A methodology for large-scale structural analysis using a parallel frontal solution algorithm is presented. The algorithm is well suited for concurrent processing by a multiple instructions, multiple data (MIMD) machine. The method is very adaptive to a parallel environment because of the inherent parallelism of the approach, which does not require the formation of the global Structure Stiffness Matrix. Thus large memory and storage space are not required. The method can be applied to large-scale Structures which normally cannot be analyzed efficiently by a conventional serial computer. Numerical studies using the Alliant FX/80 multiprocessor computer at the Northeast Parallel Architectures Center (NPAC) of Syracuse University indicate that significant speed-up can be achieved by applying the method to large-scale problems. The method is general and can be extended to enhance its applicability and versatility.
Weiping Zhang - One of the best experts on this subject based on the ideXlab platform.
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A parallel frontal solver on the alliant FX/80
Computers & Structures, 1991Co-Authors: Weiping Zhang, Eric M. LuiAbstract:Abstract A methodology for large-scale structural analysis using a parallel frontal solution algorithm is presented. The algorithm is well suited for concurrent processing by a multiple instructions, multiple data (MIMD) machine. The method is very adaptive to a parallel environment because of the inherent parallelism of the approach, which does not require the formation of the global Structure Stiffness Matrix. Thus large memory and storage space are not required. The method can be applied to large-scale Structures which normally cannot be analyzed efficiently by a conventional serial computer. Numerical studies using the Alliant FX/80 multiprocessor computer at the Northeast Parallel Architectures Center (NPAC) of Syracuse University indicate that significant speed-up can be achieved by applying the method to large-scale problems. The method is general and can be extended to enhance its applicability and versatility.
Quanfeng Wang - One of the best experts on this subject based on the ideXlab platform.
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Effect of the shear wall cutoff on storey drifts of frame-shear wall Structures
Advances in Building Technology, 2002Co-Authors: Quanfeng WangAbstract:Publisher Summary This chapter determines numerically the effect of shear wall cutoff on storey drifts in frame-shear walls. The numerical analyses of the Structures use the finite element technique with a base motion having peak base accelerations of 0.41g. The member system-storey model is employed to estimate the earthquake responses of frame-shear wall Structures with shear wall cutoff. The complete Structure Stiffness Matrix is obtained from the individual frame and frame-shear wall Stiffness matrices. Four small-scale reinforced concrete test Structures are constructed. These are identified by the designations FW9, FW4, FW1, and FW0. Each Structure is assumed to consist of two identical parallel nine-storey, three-span frames, and a central shear wall built parallel to the frames. The Structures are subjected to the first ten seconds of the NS single horizontal component of the EI Centro recorded during the 1940 Imperial Valley Earthquake. The amount of viscous damping is fixed at 2% of critical value, which is thought to be representative of a concrete Structure. Structure FW0 behaves obviously with a typical shear deformation character. In contrast, Structures FW1, FW4, and FW9 behave obviously with a typical shear-flexure deformation character corresponding to theoretical prediction.
H M Arslan - One of the best experts on this subject based on the ideXlab platform.
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A simplified dynamic analysis of multi-bay stiffened coupled shear walls
Advances in Engineering Software, 2007Co-Authors: Orhan Aksogan, Murat Bikçe, Engin Emsen, H M ArslanAbstract:The forced vibration analysis of a multi-bay coupled shear wall on an elastic foundation has been studied. The analysis considers shear walls with a finite number of stiffening beams, the properties of which vary from span to span and/or from section to section in the vertical direction. The continuous connection method is employed to find the Structure Stiffness Matrix. The Structure mass Matrix is found with the lumped mass assumption. A time-history analysis has been carried out using the Newmark numerical integration method. A computer program has been prepared in the MATHEMATICA computer algebra system and a problem has been solved for verification and comparison purposes. The results obtained by the present method have been compared with those obtained using the SAP2000 structural analysis program and a good match has been observed. The two advantages of the proposed method are the simplicity of its data and the extremely short computation time, which render it an effective method for the predesign of high-rise buildings.
