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Journal of Mechanical Science and Technology Volume 25 Issue 3

Subject Areas: Mechanical Engineering;
Publisher: Korean Society of Mechanical Engineers - Springer Journals
ISSN: 1738-494X
SJR: 59

LitStream

Journal Article

Reliability-based design optimization of axial compressor using uncertainty model for stall margin

Hong, Sangwon; Lee, Saeil; Jun, Sangook; Lee, Dong-Ho; Kang, Hyungmin; Kang, Young-Seok; Yang, Soo-Seok

2011 Journal of Mechanical Science and Technology

doi:10.1007/s12206-011-0103-y

Reliability-based design optimization (RBDO) of the NASA stage 37 axial compressor is performed using an uncertainty model for stall margin in order to guarantee stable operation of the compressor. The main characteristics of RBDO for the axial compressor are summarized as follows: First, the...
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Journal Article

A hybrid time-stepping method of local preconditioning on high aspect ratio grids

Lee, Jae; Kim, Yoonsik; Kwon, Jang

2011 Journal of Mechanical Science and Technology

doi:10.1007/s12206-011-0119-3

Time-derivative preconditioning methods have provided robust convergences and accurate solutions for low-speed inviscid flows by using local flow properties as the reference scaling parameter in the preconditioning matrix. During viscous or turbulent flow calculations, the use of high aspect...
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Journal Article

Experimental and numerical study of transient flow in a centrifugal pump during startup

Li, Zhifeng; Wu, Peng; Wu, Dazhuan; Wang, Leqin

2011 Journal of Mechanical Science and Technology

doi:10.1007/s12206-011-0107-7

Transient characteristics and flows in a centrifugal pump during its starting period were experimentally and numerically investigated. The two-dimensional particle image velocimetry technique was used to capture transient flow evolutions in the pump’s diffuser. A new dynamic slip region method...
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Journal Article

Numerical study on control derivatives of a high-speed underwater vehicle

Kim, Haedong; Cho, Hyeonjin

2011 Journal of Mechanical Science and Technology

doi:10.1007/s12206-011-0123-7

This paper presents a numerical study on control effectiveness of a high-speed underwater vehicle with cruciform stern configuration using a computational fluid dynamics approach. The calculation of the control derivatives of the underwater vehicle is validated by comparison with the experimental...
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Journal Article

Numerical investigation of suction vortices behavior in centrifugal pump

An, Young-Joon; Shin, Byeong

2011 Journal of Mechanical Science and Technology

doi:10.1007/s12206-011-0108-6

A numerical simulation on suction vortices behavior in a centrifugal pump was carried out to investigate their influence on the internal flow through impellers including formation and shedding of cavitation by using a finite-volume method and k-ω Shear Stress Transport turbulence model. For...
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Journal Article

Optimization of a structure with contact conditions using equivalent loads

Yi, Sang-Il; Lee, Hyun-Ah; Park, Gyung-Jin

2011 Journal of Mechanical Science and Technology

doi:10.1007/s12206-011-0129-1

Engineering structures consist of various components, and the components interact with each other through contact. Engineers tend to consider the interaction in analysis and design. Interactions of the components have nonlinearity because of the friction force and boundary conditions. Nonlinear...
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Journal Article

Use of simple finite elements for mechanical systems impact analysis based on stereomechanics, stress wave propagation, and energy method approaches

McCoy, Michael; Moradi, Rasoul; Lankarani, Hamid

2011 Journal of Mechanical Science and Technology

doi:10.1007/s12206-011-0125-5

This paper examines the effectiveness of analyzing impact events in mechanical systems for design purposes using simple or low ordered finite elements. Traditional impact dynamics analyses of mechanical systems namely stereomechanics, energy method, stress-wave propagation and contact mechanics...
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Journal Article

Study on the scattering of 2-D Rayleigh waves by a cavity based on BEM simulation

Liu, Weiwei; Cho, Younho; Phan, Haidang; Achenbach, Jan

2011 Journal of Mechanical Science and Technology

doi:10.1007/s12206-011-0133-5

A frequency domain boundary element method is introduced in this paper to simulate the scattering of two-dimensional Rayleigh waves by a cavity on the surface of an elastic half-space. This numerical method allows the Rayleigh wave to escape the truncated boundary without producing any spurious...
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Journal Article

Numerical simulations of motion behaviors of pan mechanism in a cooking robot with granular cuisine

Chen, Yuan; Deng, Zongquan; Li, Bing

2011 Journal of Mechanical Science and Technology

doi:10.1007/s12206-011-0111-y

A discrete element method (DEM) model under a specific movement of wall is developed to simulate the motion behaviors of pan mechanism in a cooking robot with granular cuisine. Two performance indices describing the featured motion in Chinese cuisine are proposed to determine the main influential...
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Journal Article

Buckling analysis of laminated composite rectangular plates reinforced by SWCNTs using analytical and finite element methods

Arani, A.; Maghamikia, Sh.; Mohammadimehr, M.; Arefmanesh, A.

2011 Journal of Mechanical Science and Technology

doi:10.1007/s12206-011-0127-3

In this paper, the buckling analysis of laminated composite plates reinforced by single-walled carbon nanotubes (SWCNTs) is carried out using an analytical approach as well as the finite element method. The developed model is based on the classical laminated plate theory (CLPT) and the...

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