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RISS 인기검색어
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- 저자 : Anyuan Jiao (검색결과 3 건)
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STRUCTURE IMPROVEMENT OF TRUCK CARRIAGE WITH SEALING COVER
Anyuan Jiao,Fulong Chen,Xiaomei Chen,Shulin Shen 한국자동차공학회 2020 International journal of automotive technology Vol.21 No.1
SolidWorks and ANSYS Workbench were used to establish solid model and perform FEM analysis of truck with and without sealing covers respectively. In the past practical production, there has been no precedent for the modal analysis of the truck carriage with a sealing cover; the modal analysis is carried out for the first time in this paper. The vibration characteristics of the truck carriage are obtained. The first ten-order of non-rigid mode of the newly development truck carriage is obtained and the excitation frequency range of the idling state of the engine is calculated to avoid resonating with the ground. In order to avoid the resonance phenomenon during the truck running, the vibration characteristics of the new carriage model were studied, the first ten non-rigid modes of the new carriage model were extracted, and the excitation frequency range of the engine during idling was calculated. The non-rigid natural frequencies of the first 10 free models are between 6.18 ~ 26.74 Hz. The engine idling excitation frequency is 32.5 ~ 145 Hz, and the common excitation frequency caused by road roughness is 3 Hz. In theory, it does not cause resonance when driving in a normal state.
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Study on Variable Parameter Helical Milling of TC4 Titanium Alloy Tube
Anyuan Jiao,Jingqi Yuan,Yue Zhang,Jialong Zhang,Yongxin Miao,Guojun Liu 한국정밀공학회 2023 International Journal of Precision Engineering and Vol.24 No.11
Titanium alloy was widely used in various tubing systems due to the excellent performance, and tubes were usually used as a connection channel for conveying media with holes. However, the stability and dependability of media transmission in the tubing system would be directly impacted by the quality of the holes. This study primarily focused on TC4 titanium alloy tubes to investigate variable parameter helical milling holes to enhance the quality of tube connection holes. The finite element method simulation and response surface method were used to examine the relationship between each process parameter and the accuracy of the holes. Thus, a better combination of process parameters was projected. And based on this, a variable parameter hole-making scheme was proposed to lower the burrs at the entrance and exit of holes and enhance the quality of the wall of holes. The results showed that the aperture of 5.015 mm after processing the titanium alloy tube using the better process parameters met the requirements of H8. Additionally, the burrs at the hole entrance were 1.4 μm, the burrs at the hole exit were not noticeable, and the surface roughness Rz and Ra were 1.459 μm and 0.232 μm, respectively, met the requirements of process technology. The variable parameter helical milling technique used in this study could significantly raise the quality of holes produced in titanium alloy tubes and serve as a valuable benchmark for tubes of other materials.
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Study of failure analysis and manufacturing processes improvement of cracking connecting rod
Zhen Zhang,Anyuan Jiao,Xiwei Lv,Haodong Ding 대한기계학회 2022 JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY Vol.36 No.11
Herein, we provide a novel method of using finite element analysis to guide the improvement of manufacturing processes on the basis of physicochemical analysis. First, based on the theoretical analysis of the force of the connecting rod, the solid model of cracking connecting rod is established by SolidWorks. Then the static stress analysis, modal analysis and fatigue analysis are carried out by ANSYS, determining the location where the connecting rod is prone to failure. Second, the influence of processing technology and other factors on the failure of connecting rod is analyzed, and several improved schemes for the manufacturing process are proposed. Finally, the fatigue test of the connecting rod is performed to verify the effect. Compared with the unimproved connecting rod, the tension and pressure of the improved connecting rod increased to 92.34 KN and -425.7 KN, respectively. The safety factor under this load is 1.8, which has increased by 20 % compared to 1.5 before the improvement.
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