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Parametric Analysis on the Optimal Dimensions of Steel Sleeve in swaging Type Anchorage for CFRP Tendon

Engineering（科研） 2013年第11期5卷 902-908页

作者： Jae Yoon Kang Jong Sup Park Woo Tai Jung Moon Seoung Kum Structural Engineering Research Division Korea Institute of Construction Technology Goyang Korea

This paper presents the parametric analysis conducted to derive the optimal dimensions of the steel sleeve necessary to secure the bond performance of the swaging type anchorage for CFRP tendon with diameter of 5 mm. To that goal, finite element analysis is performed on the parameters determining the dimensions of the sleeve like the thickness and inner diameters of the sleeve. The results show that a constant swaging pressure of about 450 MPa on the mean is distributed in the sleeve when the thickness ratio of the stress relief zone to the effective swaging zone of the sleeve is larger than 1.1 and that the swaging pressure tends to reduce linearly as much as this thickness ratio becomes smaller than 1.1. The pressure varies within a range of about 30% according to the change in the inner diameter of the sleeve whereas varies within a range less than 10% according to the change in the inner diameter when the thickness ratio is larger than 1.1. Finally, the optimal dimensions of the steel tube sleeve enabling to secure an anchor force larger than the rupture strength of the CFRP tendon with diameter of 5 mm are determined based upon the results of the parametric analysis.

关键词： CFRP Tendon Prestressing swaging Type Anchorage swaging Sleeve

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THE swaging TECHNOLOGY USED IN SHAFT CLINCHING ASSEMBLY FOR AUTOMOTIVE HUB BEARING UNIT

THE SWAGING TECHNOLOGY USED IN SHAFT CLINCHING ASSEMBLY FOR ...

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第七届海内外青年设计与制造科学会议

作者： Xiao Yunya Zhou Zhixiong and Lv Jianmin College of Mechanical and Automotive Engineering Hunan University China Department of Electromechanical Engineering Shaoguan University China Shaoguan Southeast Bearing Co. Ltd. China

＜正＞Recently, shaft end clinching is being adopted in the hub bearing unit assembly, which will raise as technological trend and gradually replace clamp nut in future. In a machine reconstructed from lathe, the sample of shaft end clinched hub unit is successfully manufactured by swaging technology with given parameters. Some tests confirm that the shaft end clinching hub unit has functions greater than the traditional hub unit with clamp nut. In the end, the future application and the further research direction of the swaging technology are discussed.

关键词： hub bearing unit swaging shaft clinching assembly

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Mechanical characterization of cp-Ti produced by investment casting

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Transactions of Nonferrous Metals Society of China 2011年第8期21卷 1735-1740页

作者： Khaled M.IBRAHIM Mansour MHAEDE Lothar WAGNER Central Metallurgical R&D Institute(CMRDI) Institue of Materials Science and Engineering TU-Clausthal

The influence of hot swaging（SW） and annealing treatment on microstructure and mechanical properties of commercially pure titanium produced by investment casting was *** as-cast samples showed a typical microstructure consisting of a variety of α-morphologies,while the hot swaged samples exhibited a kinked lamellar *** at 500 °C did not significantly change this microstructure while annealing at 700 and 870 °C led to recrystallization and formation of equiaxed *** cast bars exhibited a typical hard α-layer in near-surface regions with a maximum depth and maximum hardness of 720 μm and HV0.5 660,*** to SW,the tensile strength of the as-cast material drastically increased from 605 MPa to 895 *** at 500 °C decreased the tensile strength slightly from 895 to 865 MPa while annealing at 700 °C led to a further pronounced drop in tensile strength from 865 to 710 *** additional decrease in tensile strength was noticed with increasing the annealing temperature from 700 to 870 °*** true fracture strain of the as-cast and hot swaged samples was in the range of 0.05 to 0.12,while the annealed samples showed values in the range of 0.25 to *** addition,the as-cast and hot swaged samples revealed a brittle cleavage fracture ***,the annealed samples showed a transgranular ductile fracture with formation of dimples.

关键词： pure titanium investment casting swaging thermo-mechanical processing mechanical properties

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