GLORIA

GEOMAR Library Ocean Research Information Access

X

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
Filter
  • Trans Tech Publications, Ltd.  (6)
  • 1
    Online Resource
    Online Resource
    Computational Analysis of Multibody Dynamic Systems Using Nonlinear Recursive Formulation
    Trans Tech Publications, Ltd. ; 2009
    In:  Key Engineering Materials Vol. 419-420 ( 2009-10), p. 289-292
    Details
    In: Key Engineering Materials, Trans Tech Publications, Ltd., Vol. 419-420 ( 2009-10), p. 289-292
    Abstract: . In this paper the computer implementation of the nonlinear recursive formulation in multibody dynamics systems is described. The organization of the computer algorithm which is used to automatically construct and numerically solve the system of loosely coupled dynamic equations expressed in terms of the absolute and joint coordinates is discussed. The inertia projection schemes used in most existing recursive formulations for the dynamic analysis of deformable mechanisms lead to dense coefficient matrices in the equations of motion. Consequently, there are strong dynamic couplings between the joint and elastic coordinates. By using the inertia matrix structure of deformable mechanical systems and the fact that the joint reaction forces associated with the elastic coordinates do represent independent variables, a reduced system of equations whose dimension is dependent of the number of elastic degrees of freedom is obtained. This system can be solved for the joint accelerations as well as the joint reaction forces. The multibody flexible four-bar system is used as an example to demonstrate the use of the procedure discussed in this paper.
    Type of Medium: Online Resource
    ISSN: 1662-9795
    URL: Issue
    URL: Article
    DOI: 10.4028/www.scientific.net/KEM.419-420
    DOI: 10.4028/www.scientific.net/KEM.419-420.289
    Language: Unknown
    Publisher: Trans Tech Publications, Ltd.
    Publication Date: 2009
    detail.hit.zdb_id: 2073306-9
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    Online Resource
  • 2
    Online Resource
    Online Resource
    The Time-Space Distribution Character and Influences of PM〈sub〉2.5〈/sub〉 in Nanning, Guangxi
    Trans Tech Publications, Ltd. ; 2015
    In:  Advanced Materials Research Vol. 1092-1093 ( 2015-3), p. 1001-1005
    Details
    In: Advanced Materials Research, Trans Tech Publications, Ltd., Vol. 1092-1093 ( 2015-3), p. 1001-1005
    Abstract: Few study was about the fine particulate matter (PM 2.5 ) in Nanning. This paper analyzed the time-space distribution character and influences of PM 2.5 in Nanning. We collected data of 4 monitoring stations in 2013 year in Nanning, Guangxi. Our results showed that concentration of PM 2.5 in Nanning were Dec. 〉 Jan 〉 Oct. 〉 Nov. 〉 Mar. 〉 Apr. = Sep. 〉 Feb. 〉 May = Aug. 〉 June 〉 July. The obvious hazy day occurred in winter and autumn. The monitoring stations located in the north suffered higher PM 2.5 pollution compared with the other stations. Concentration of PM 2.5 was significantly higher in the month when currents came from island than the month when currents from sea. The increased monthly concentration of PM 2.5 was associated with the northwest and northeast currents from inland. A combination of lower speed of wind, northwestly wind and regional transport made contribution to the evaluated PM 2.5 concentration.
    Type of Medium: Online Resource
    ISSN: 1662-8985
    URL: Issue
    URL: Article
    DOI: 10.4028/www.scientific.net/AMR.1092-1093
    DOI: 10.4028/www.scientific.net/AMR.1092-1093.1001
    Language: Unknown
    Publisher: Trans Tech Publications, Ltd.
    Publication Date: 2015
    detail.hit.zdb_id: 2265002-7
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    Online Resource
  • 3
    Online Resource
    Online Resource
    Structure Analysis and Optimization of the Rotor of a Vertical Motor Based on Virtual Prototyping
    Trans Tech Publications, Ltd. ; 2010
    In:  Applied Mechanics and Materials Vol. 34-35 ( 2010-10), p. 1379-1382
    Details
    In: Applied Mechanics and Materials, Trans Tech Publications, Ltd., Vol. 34-35 ( 2010-10), p. 1379-1382
    Abstract: The solid model and virtual prototype model are built. Kinematics, strength and rigidity analysis are completed with FEM simulation system of MSC.NASTRAN. The analysis results of stress, strain and displacement of finite element simulation are presented. The results of simulation were proved by vibration experiment. Based on the simulation and vibration experiment, the mechanics dynamical properties are proved, the main destroy form and locations are analyzed and indexed. The result shows that the rigidity and strengthen could meet the requirement of design of the motor. In the end, in order to satisfy the needs of kinds of clients, the effect of core length on the stress and displacement is also discussed through FEA simulation. Finally, an optimization structure of the Rotor of a vertical motor is given and analyzed, which has the guiding sense in the test and 0ptimizating for the rotor.
    Type of Medium: Online Resource
    ISSN: 1662-7482
    URL: Issue
    URL: Article
    DOI: 10.4028/www.scientific.net/AMM.34-35
    DOI: 10.4028/www.scientific.net/AMM.34-35.1379
    Language: Unknown
    Publisher: Trans Tech Publications, Ltd.
    Publication Date: 2010
    detail.hit.zdb_id: 2251882-4
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    Online Resource
  • 4
    Online Resource
    Online Resource
    Physicochemical Property and Nutrient Status of Soils in Urban Green Spaces in Xuzhou, China
    Trans Tech Publications, Ltd. ; 2012
    In:  Advanced Materials Research Vol. 610-613 ( 2012-12), p. 3102-3108
    Details
    In: Advanced Materials Research, Trans Tech Publications, Ltd., Vol. 610-613 ( 2012-12), p. 3102-3108
    Abstract: Soil physicochemical properties and the nutrient status of urban green spaces (UGS) in Xuzhou were analyzed. The results show that the soil pH is neutral to alkaline. Influenced by alkaline chemical fertilizer and some building materials, the soil pH presents a rising tendency. The content of soil organic matter (SOM) content was low but variable, which is mainly attributed to the disturbance of anthropogenic activity. The distributions of total nitrogen, phosphorus and potassium are relatively uniform but those of alkali-hydrolysable nitrogen, available phosphorus and potassium are highly dispersed. In addition, available phosphorus shows the most significant variation. The contents of nitrogen, phosphorus and potassium are lower than in the natural cinnamon soils, and their deficiencies will occur if no effective measures are taken in the near future.
    Type of Medium: Online Resource
    ISSN: 1662-8985
    URL: Issue
    URL: Article
    DOI: 10.4028/www.scientific.net/AMR.610-613
    DOI: 10.4028/www.scientific.net/AMR.610-613.3102
    Language: Unknown
    Publisher: Trans Tech Publications, Ltd.
    Publication Date: 2012
    detail.hit.zdb_id: 2265002-7
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    Online Resource
  • 5
    Online Resource
    Online Resource
    Modal Aanalysis of the Composite Material Blade
    Trans Tech Publications, Ltd. ; 2010
    In:  Applied Mechanics and Materials Vol. 34-35 ( 2010-10), p. 1374-1378
    Details
    In: Applied Mechanics and Materials, Trans Tech Publications, Ltd., Vol. 34-35 ( 2010-10), p. 1374-1378
    Abstract: Dynamic stress of wind turbine blade has great influence on its reliability and fatigue life. In order to decrease the magnitude of dynamic stress, frequency modulation method is often used to avoid resonance. This paper created composite material model for a wind turbine blade. Blade model was imported to abaqus environment for modal analysis. In view of the characteristics of fiber reinforces plastic, a mesh was built to carry out the model analysis, and the first 6 orders of the vibration frequencies and mode shapes were obtained, by imposing certain bound on the root of blade. Meanwhile, The analysis results of the composite material blade considering stiffening effect were obtained. This method can shorten modeling time and improve working efficiency, and also it is the base for blade structure calculation and check and new product developing.
    Type of Medium: Online Resource
    ISSN: 1662-7482
    URL: Issue
    URL: Article
    DOI: 10.4028/www.scientific.net/AMM.34-35
    DOI: 10.4028/www.scientific.net/AMM.34-35.1374
    Language: Unknown
    Publisher: Trans Tech Publications, Ltd.
    Publication Date: 2010
    detail.hit.zdb_id: 2251882-4
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    Online Resource
  • 6
    Online Resource
    Online Resource
    Influence of Neodymium on Wear Resistance of Hypereutectic Al-Si Alloy
    Trans Tech Publications, Ltd. ; 2015
    In:  Advanced Materials Research Vol. 1095 ( 2015-3), p. 135-139
    Details
    In: Advanced Materials Research, Trans Tech Publications, Ltd., Vol. 1095 ( 2015-3), p. 135-139
    Abstract: The morphology of eutectic and primary silicon phases was analyzed by OM and SEM. OM and SEM results show that pure Nd can significantly refine both eutectic and primary silicon of hypereutectic Al-20%Si alloy. Morphology of primary silicon is transformed from star-shaped and irregular morphology to fine polyhedral and grain size of primary silicon is refined from 80~120 μm to 20~50 μm. Friction and wear resistance tests show that friction coefficient of Al-20%Si alloy reduces after Nd modification. Wear resistance of Al-20%Si alloy after modification is significantly improved as compared to the initial sample. The dominant wear mechanism for 0.3% Nd modified alloy is abrasive wear, adhesive wear and oxidative wear mechanism, but wear mechanism for unmodified alloy is abrasive wear and adhesive wear mechanism.
    Type of Medium: Online Resource
    ISSN: 1662-8985
    URL: Issue
    URL: Article
    DOI: 10.4028/www.scientific.net/AMR.1095
    DOI: 10.4028/www.scientific.net/AMR.1095.135
    Language: Unknown
    Publisher: Trans Tech Publications, Ltd.
    Publication Date: 2015
    detail.hit.zdb_id: 2265002-7
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    Online Resource
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...