Chang Kook Oh¹, Hoon Sohn¹

The International Conference on Computational & Experimental Engineering and Sciences, Vol.8, No.3, pp. 91-100, 2008, DOI:10.3970/icces.2008.008.091

Abstract Structural Health Monitoring (SHM) is concerned with identifying damage based on measurements obtained from structures being monitored. For the civil structures exposed to time-varying environmental and operational conditions, it is inevitable that environmental and operational variability produces an adverse effect on the dynamic behaviors of the structures. Since the signals are measured under the influence of these varying conditions, normalizing the data to distinguish the effects of damage from those caused by the environmental and operational variations is important in order to achieve successful structural health monitoring goals. In this paper, kernel principal component analysis (kernel PCA) using unsupervised support… More >

Emil Budescu¹, Lucian Popescu², Ioan Iacob², Eugen Merticaru¹

The International Conference on Computational & Experimental Engineering and Sciences, Vol.8, No.3, pp. 85-90, 2008, DOI:10.3970/icces.2008.008.085

Abstract This article has no abstract. More >

Baolin Wang¹

The International Conference on Computational & Experimental Engineering and Sciences, Vol.8, No.2, pp. 81-84, 2008, DOI:10.3970/icces.2008.008.081

Abstract When the size of a physical system is smaller than its characteristic dimensions, the macroscopic viewpoint may not be applicable. In addition, experiments at micro/nanometer scale are difficult and the analysis of nano-experimental data is far from simple. This is mostly due to the lack of effective models that are able to study the structural characteristics and mechanics behavior of the micro/nanometer physical systems. Atomic simulation simulation has been used extensively in the investigation of nanoscale phenomena. However, the size limit of atomic simulation is far short to reach the macroscale because of the limitation in computer capacity. Therefore, the… More >

N. Ohno¹, D. Okumura¹, A. Okada¹

The International Conference on Computational & Experimental Engineering and Sciences, Vol.8, No.2, pp. 73-80, 2008, DOI:10.3970/icces.2008.008.073

Abstract This paper describes buckling modes and stresses of elastic Kelvin open-cell foams subjected to uniaxial compressions. Cubic unit cells and cell aggregates in model foams are analyzed using a homogenization theory. The analysis is performed on the assumption that the struts in foams have a non-uniform distribution of cross-sectional areas as observed experimentally. By performing the analysis based on the uniformity of strut cross-sectional areas, it is shown that the non-uniformity of cross-sectional areas is an important factor for the buckling behavior of open-cell foams. More >

M. Kikuchi¹, Y. Wada², A. Utsunomiya³, Y. Li⁴

The International Conference on Computational & Experimental Engineering and Sciences, Vol.8, No.2, pp. 67-72, 2008, DOI:10.3970/icces.2008.008.067

Abstract Fatigue crack growth under mixed mode loading conditions is simulated using S-FEM. By using S-FEM technique, only local mesh should be re-meshed and it becomes easy to simulate crack growth. By combining with auto-meshing technique, local mesh is re-meshed automatically, and curved crack path is modeled easily. Three dimensional surface crack problem is solved by this technique. Pure mode I crack and slant crack problems are solved, and fatigue crack growth processes are simulated. The change of aspect ratio of surface crack and distributions of stress intensity factor along crack front are evaluated and discussed. More >

Radu-Mihai Iacob¹, Emil Budescu², Virgil Atanasiu², Radu Ibˇanescu², Dan Zaharia³

The International Conference on Computational & Experimental Engineering and Sciences, Vol.8, No.2, pp. 59-66, 2008, DOI:10.3970/icces.2008.008.059

Abstract This article has no abstract. More >

A. Alexenadrescu¹, A.S. Alex,rescu¹, A.C. Alexandrescu¹

The International Conference on Computational & Experimental Engineering and Sciences, Vol.8, No.2, pp. 47-58, 2008, DOI:10.3970/icces.2008.008.047

Abstract The paper follows the analyse of the connections between the constructive, working parameters, the annual energy consumptions and the energy quantity included in fitting out; it will formulate a methodology of establishment of the optimum values of the parameters of admeasurements of the pumping stations for the setting under pressure, of pipes networks, what ensure an optimum consumption of energy during of duty of the fitting out (the operational energy and the included energy in the networks, equipment and constructions), of the conditions after that it can be obtained. It will follow the generalization of the solutions of increase of… More >

G. Papaioannou¹, C. Mitrogiannis¹, G. Nianios¹

The International Conference on Computational & Experimental Engineering and Sciences, Vol.8, No.2, pp. 41-46, 2008, DOI:10.3970/icces.2008.008.041

Abstract Previous attempts to track skeletal kinematics from sequences of images acquired using biplane dynamic radiography report challenges in automating the tracking technique due to image resolution issues, occlusion from segments appearing synchronously in the field of view and computational load. This translates into many hours of manual work to export the kinematics. The proposed new tracking method tackles the above problems and reduces the time to export kinematics from several hours to less than 3 minutes. More >

Emil I. Budescu¹, Ioan Iacob²

The International Conference on Computational & Experimental Engineering and Sciences, Vol.8, No.1, pp. 31-40, 2008, DOI:10.3970/icces.2008.008.031

Abstract This article has no abstract. More >

Z. Damián-Noriega¹, R. Pérez-Moreno¹, S.A. Villanueva-Pruneda¹, V.M. Domínguez-Hernández², J.P.A. Puerta-Huerta¹, C. Huerta-Muñoz³

The International Conference on Computational & Experimental Engineering and Sciences, Vol.8, No.1, pp. 25-30, 2008, DOI:10.3970/icces.2008.008.025

Abstract In this work, a new equation to predict the springback in the bending and rolling processes of metallic sheet is presented. This equation has been experimentally applied in the design of a wood truncated cone to form an aluminum sheet truncated cone. Kalpakjian's equation was also applied but Damian's equation has given the best performance. More >