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  • 1
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    Engineering design of thermal quality clothing on a simulation-based and lifestyle-oriented CAD system (2011)
    Springer
    Details
    Publication Date: 2011-06-10
    Description:    Engineering design of thermal quality clothing is a promising solution by applying multi-disciplinary knowledge to achieve the design and production of clothing with desirable thermal functions. In this paper, a special simulation-based and lifestyle-oriented CAD system is introduced to help the user in engineering design of thermal quality clothing. The engineering-oriented simulation models endowed with explicit data availability arose from the material parameters that are the key issue for engineering application. To offer an easy-to-use tool, this system is implemented with a lifestyle-oriented design procedure. It can facilitate the designers to quickly implement design and simulate on the wearing scenario, and evaluate and optimize their design. Due to the design of thermal quality clothing can be achieved without making physical prototypes, it is able to speed up the design cycle and reduce the design and development cost. Content Type Journal Article Pages 1-17 DOI 10.1007/s00366-011-0224-z Authors Aihua Mao, School of Computer Science and Engineering, South China University of Technology, Guangzhou, 510006 China Jie Luo, Institute of Textiles and Clothing, Hong Kong Polytechnic University, Hung Hom, Hong Kong, China Yi Li, Institute of Textiles and Clothing, Hong Kong Polytechnic University, Hung Hom, Hong Kong, China Ruomei Wang, School of Information Science and Technology, Sun Yat-Sen University, Guangzhou, 510006 China Guiqing Li, School of Computer Science and Engineering, South China University of Technology, Guangzhou, 510006 China Yueping Guo, Institute of Textiles and Clothing, Hong Kong Polytechnic University, Hung Hom, Hong Kong, China Journal Engineering with Computers Online ISSN 1435-5663 Print ISSN 0177-0667
    Print ISSN: 0177-0667
    Electronic ISSN: 1435-5663
    Topics: Computer Science , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Technology
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  • 2
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    DOOLINES: an object-oriented framework for non-linear static and dynamic analyses of offshore lines (2011)
    Springer
    Details
    Publication Date: 2011-06-15
    Description:    We present an object-oriented framework, named DOOLINES , for non-linear static and dynamic analyses of slender marine structures which often appear in offshore structures employed in the petroleum and gas industries as, among others, flexible risers, steel catenary risers, umbilicals, floating hoses, and mooring lines. DOOLINES allows the rapid development of tailored, modular, reusable and extensible large-size systems, being itself extensible. These properties, along with the ease of use of our framework, are assessed by means of case studies. Code examples are provided. Content Type Journal Article Pages 1-11 DOI 10.1007/s00366-011-0226-x Authors Eduardo S. S. da Silveira, Laboratório de Computação Científica e Visualização, Universidade Federal de Alagoas, Campus A. C. Simões, Av. Lourival de Melo Mota S/N, Tabuleiro do Martins, 57072-970 Maceió, AL, Brazil Eduardo N. Lages, Laboratório de Computação Científica e Visualização, Universidade Federal de Alagoas, Campus A. C. Simões, Av. Lourival de Melo Mota S/N, Tabuleiro do Martins, 57072-970 Maceió, AL, Brazil Fábio M. G. Ferreira, Laboratório de Computação Científica e Visualização, Universidade Federal de Alagoas, Campus A. C. Simões, Av. Lourival de Melo Mota S/N, Tabuleiro do Martins, 57072-970 Maceió, AL, Brazil Journal Engineering with Computers Online ISSN 1435-5663 Print ISSN 0177-0667
    Print ISSN: 0177-0667
    Electronic ISSN: 1435-5663
    Topics: Computer Science , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Technology
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  • 3
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    A robust solution procedure for hyperelastic solids with large boundary deformation (2011)
    Springer
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    Publication Date: 2011-06-15
    Description:    Compressible Mooney–Rivlin theory has been used to model hyperelastic solids, such as rubber and porous polymers, and more recently for the modeling of soft tissues for biomedical tissues, undergoing large elastic deformations. We propose a solution procedure for Lagrangian finite element discretization of a static nonlinear compressible Mooney–Rivlin hyperelastic solid. We consider the case in which the boundary condition is a large prescribed deformation, so that mesh tangling becomes an obstacle for straightforward algorithms. Our solution procedure involves a largely geometric procedure to untangle the mesh: solution of a sequence of linear systems to obtain initial guesses for interior nodal positions for which no element is inverted. After the mesh is untangled, we take Newton iterations to converge to a mechanical equilibrium. The Newton iterations are safeguarded by a line search similar to one used in optimization. Our computational results indicate that the algorithm is up to 70 times faster than a straightforward Newton continuation procedure and is also more robust (i.e., able to tolerate much larger deformations). For a few extremely large deformations, the deformed mesh could only be computed through the use of an expensive Newton continuation method while using a tight convergence tolerance and taking very small steps. Content Type Journal Article Pages 1-13 DOI 10.1007/s00366-011-0225-y Authors Suzanne M. Shontz, Department of Computer Science and Engineering, The Pennsylvania State University, University Park, PA 16802, USA Stephen A. Vavasis, Department of Combinatorics and Optimization, University of Waterloo, Waterloo, ON N2L 3G1, Canada Journal Engineering with Computers Online ISSN 1435-5663 Print ISSN 0177-0667
    Print ISSN: 0177-0667
    Electronic ISSN: 1435-5663
    Topics: Computer Science , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Technology
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  • 4
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    Users’ perception of open source usability: an empirical study (2011)
    Springer
    Details
    Publication Date: 2011-05-24
    Description:    The number of open source software (OSS) users has increased in recent years. No longer are they limited to technically adept software developers. Many believe that the OSS market share could increase tremendously provided OSS had systems that were easier to use. Although examples of good usable open source software exist, it is agreed that OSS can be made more usable. This study presents an empirical investigation into the impact of some key factors on OSS usability from the end users’ point of view. The research model studies and establishes the relationship between the key usability factors from the users’ perspective and OSS usability. A data set of 102 OSS users from 13 open source projects of various sizes was used to study the research model. The results of this study provide empirical evidence by indicating that the highlighted key factors play a significant role in improving OSS usability. Content Type Journal Article Pages 1-13 DOI 10.1007/s00366-011-0222-1 Authors Arif Raza, Department of Electrical and Computer Engineering, University of Western Ontario, London, ON N6A 5B9, Canada Luiz Fernando Capretz, Department of Electrical and Computer Engineering, University of Western Ontario, London, ON N6A 5B9, Canada Faheem Ahmed, Faculty of Information Technology, United Arab Emirates University, P. O. Box 17551, Al Ain, United Arab Emirates Journal Engineering with Computers Online ISSN 1435-5663 Print ISSN 0177-0667
    Print ISSN: 0177-0667
    Electronic ISSN: 1435-5663
    Topics: Computer Science , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Technology
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  • 5
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    Cuckoo search algorithm: a metaheuristic approach to solve structural optimization problems (2011)
    Springer
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    Publication Date: 2011-08-02
    Description:    In this study, a new metaheuristic optimization algorithm, called cuckoo search (CS), is introduced for solving structural optimization tasks. The new CS algorithm in combination with Lévy flights is first verified using a benchmark nonlinear constrained optimization problem. For the validation against structural engineering optimization problems, CS is subsequently applied to 13 design problems reported in the specialized literature. The performance of the CS algorithm is further compared with various algorithms representative of the state of the art in the area. The optimal solutions obtained by CS are mostly far better than the best solutions obtained by the existing methods. The unique search features used in CS and the implications for future research are finally discussed in detail. Content Type Journal Article Pages 1-19 DOI 10.1007/s00366-011-0241-y Authors Amir Hossein Gandomi, Department of Civil Engineering, Tafresh University, Tafresh, Iran Xin-She Yang, Mathematics and Scientific Computing, National Physical Lab, Teddington, TW11 0LW UK Amir Hossein Alavi, School of Civil Engineering, Iran University of Science and Technology, Narmak, Tehran, Iran Journal Engineering with Computers Online ISSN 1435-5663 Print ISSN 0177-0667
    Print ISSN: 0177-0667
    Electronic ISSN: 1435-5663
    Topics: Computer Science , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Technology
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  • 6
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    Form-finding of tensegrity structures using double singular value decomposition (2011)
    Springer
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    Publication Date: 2011-10-01
    Description:    A numerical form-finding procedure of tensegrity structures is developed. The only required information is the topology and the types of members. The singular value decompositions of the force density and equilibrium matrices are performed iteratively to find the feasible sets of nodal coordinates and force densities which satisfy the minimum required deficiencies of these two matrices, respectively. An approach of defining a unique configuration of tensegrity structure by specifying an independent set of nodal coordinates is provided. An explanation is given for the preservation in self-equilibrium status of the tensegrity structures under affine transformation. Two- and three-dimensional examples are illustrated to demonstrate the efficiency and robustness of the proposed method in searching stable self-equilibrium configurations of tensegrity structures. Content Type Journal Article Category Original Article Pages 1-16 DOI 10.1007/s00366-011-0245-7 Authors Hoang Chi Tran, Department of Architectural Engineering, Sejong University, 98 Kunja Dong, Kwangjin Ku, Seoul, 143-747 Korea Jaehong Lee, Department of Architectural Engineering, Sejong University, 98 Kunja Dong, Kwangjin Ku, Seoul, 143-747 Korea Journal Engineering with Computers Online ISSN 1435-5663 Print ISSN 0177-0667
    Print ISSN: 0177-0667
    Electronic ISSN: 1435-5663
    Topics: Computer Science , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Technology
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  • 7
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    A reliable triangular mesh intersection algorithm and its application in geological modelling (2012)
    Springer
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    Publication Date: 2012-11-10
    Description:    We introduce a reliable intersection algorithm for manifold surface meshes. The proposed algorithm builds conforming surface meshes from a set of intersecting triangulated surfaces. This algorithm effectively handles all degenerate triangle–triangle intersection cases. The key idea of the algorithm is based on an extensive set of triangle–edge intersection cases, combined with an intersection curve tracking method. The intersection operations do not rely on global spatial search operations and no remeshing steps are needed. The intersection curves are introduced into each surface mesh using a unique curve imprinting algorithm. The imprinting algorithm naturally handles degenerate intersection cases of many surfaces at an edge or at a point. The algorithm produces a consistent mesh data structure for subsequent mesh optimization operations. The mesh intersection algorithm is used within a general framework for modelling and meshing of geological formations, which are essential for reliable mathematical modelling of oil reservoirs. Content Type Journal Article Category Original Article Pages 1-15 DOI 10.1007/s00366-012-0297-3 Authors Ahmed H. Elsheikh, Institute for Computational Engineering and Sciences (ICES), The University of Texas at Austin, 201 East 24th Street, Campus Mail C0200, Austin, TX 78712, USA Mustafa Elsheikh, Cheriton School of Computer Science, University of Waterloo, 200 University Avenue West, Waterloo, ON N2L 3G1, Canada Journal Engineering with Computers Online ISSN 1435-5663 Print ISSN 0177-0667
    Print ISSN: 0177-0667
    Electronic ISSN: 1435-5663
    Topics: Computer Science , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Technology
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  • 8
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    Multiple regression, ANN and ANFIS models for prediction of backbreak in the open pit blasting (2012)
    Springer
    Details
    Publication Date: 2012-11-12
    Description:    Backbreak is one of the undesirable effects of blasting operations causing instability in mine walls, falling down the machinery, improper fragmentation and reduction in efficiency of drilling. Backbreak can be affected by various parameters such as the rock mass properties, blasting geometry and explosive properties. In this study, the application of the artificial neural network (ANN), an adaptive neuro-fuzzy inference system (ANFIS) for prediction of backbreak, was described and compared with the traditional statistical model of multiple regression. The performance of these models was assessed through the root mean square error, correlation coefficient ( R 2 ) and mean absolute percentage error. As a result, it was found that the constructed ANFIS exhibited a higher performance than the ANN and multiple regression for backbreak prediction. Content Type Journal Article Category Original Article Pages 1-10 DOI 10.1007/s00366-012-0298-2 Authors Mohammad Esmaeili, Department of Mining Engineering, Science and Research Branch, Islamic Azad University, Tehran, Iran Morteza Osanloo, Department of Mining and Metallurgical Engineering, Amirkabir University of Technology, Tehran, Iran Farshad Rashidinejad, Department of Mining Engineering, Science and Research Branch, Islamic Azad University, Tehran, Iran Abbas Aghajani Bazzazi, Department of Mining Engineering, Savadkooh Branch, Islamic Azad University, Savadkooh, Iran Mohammad Taji, Department of Mining Engineering, Shahrood Branch, Islamic Azad University, Shahrood, Iran Journal Engineering with Computers Online ISSN 1435-5663 Print ISSN 0177-0667
    Print ISSN: 0177-0667
    Electronic ISSN: 1435-5663
    Topics: Computer Science , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Technology
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  • 9
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    Searching for a novel optimization strategy in tensile and fatigue properties of alumina particulates reinforced aluminum matrix composite (2012)
    Springer
    Details
    Publication Date: 2012-11-15
    Description:    Development and application of metal matrix composite materials and increased application of calculations, simulations and modeling in the area of semi-solid solidification ask for the knowledge of compocasting for these materials. In this study, a self-organizing hierarchical particle swarm optimizer is implemented for computational modeling and optimization of the compocast high strength and highly uniform Al matrix composites. The matrix of the composite was a 6061 Al alloy and the reinforcement was alumina particle (Al 2 O 3 p). Experimental results were obtained for hardness, tensile and fatigue properties of the Al alloys with different vol.% of micro-particles. The tensile strength of the composites increased considerably by increasing the reduction ratio in the cold rolling process. It is observed that the presence of reinforcement in the Al alloy degrades the low-cycle fatigue property when the Al matrix composites are subject to strain-controlled cyclic loading. The method combines position update rules, the standard velocity and the strengths of particle swarm optimization with the ideas of selection, crossover and mutation from GA. Content Type Journal Article Category Original Article Pages 1-10 DOI 10.1007/s00366-012-0299-1 Authors Mohsen Ostad Shabani, Karaj Branch, Islamic Azad University, Karaj, Iran Ali Mazahery, Karaj Branch, Islamic Azad University, Karaj, Iran Journal Engineering with Computers Online ISSN 1435-5663 Print ISSN 0177-0667
    Print ISSN: 0177-0667
    Electronic ISSN: 1435-5663
    Topics: Computer Science , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Technology
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  • 10
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    IMR19 2010—special journal issue of engineering with computers—preface (2012)
    Springer
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    Publication Date: 2012-09-30
    Description: IMR19 2010—special journal issue of engineering with computers—preface Content Type Journal Article Category Editorial Pages 1-1 DOI 10.1007/s00366-012-0289-3 Authors Suzanne M. Shontz, Mississippi State, MS, USA Yongjie Zhang, Pittsburgh, PA, USA Journal Engineering with Computers Online ISSN 1435-5663 Print ISSN 0177-0667
    Print ISSN: 0177-0667
    Electronic ISSN: 1435-5663
    Topics: Computer Science , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Technology
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