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Mechanical Analysis Methods of Cantilever Gearbox Housing

Journal of Shanghai Jiaotong university(Science) 2023年第2期28卷 233-242页

作者：王珏李朋宋诗瑶 Department of Information Engineering Liaoning Economic Vocational Technological InstituteShenyang 110122China

The mechanical state of cantilever gearbox housing is different from ordinary ones due to the long arm of force caused by cantilever *** mechanical analysis methods either took cantilever gearbox housing as ordinary ones or cantilever *** published papers have specially focused on mechanical analysis method for cantilever gearbox *** paper takes a longwall shearer cutting unit gearbox(SCUG)as an example and the mechanical analysis method is investigated according to the causes of fatigue for *** analysis model is established for finding out regions of static fatigue caused by low-frequency loads,and local resonance analysis is used for finding out regions of vibration fatigue caused by high-frequency *** only bending moment but also torque caused by gear meshing forces is taken into account in the force analysis *** response is obtained from cutting experiment,and dominant frequencies of local resonance are obtained by frequency domain *** element model of SCUG is established,and natural frequencies and strain modes are analyzed for obtaining the main vibration modes corresponding to dominant ***,large stress regions caused by low and high frequency loads are *** show that the worst working condition is oblique cutting,and the stress of B-B in 600 mm cutting depth can reach 166 ***,950 Hz,1250 Hz,and 1400 Hz are dominant frequencies of SCUG(23rd,25th and 27th natural frequencies).Generally,this paper proposes some principles for mechanical analysis method of cantilever gearbox housing.

关键词： cantilever gearbox housing mechanical analysis method static fatigue vibration fatigue dynamic characteristics cutting experiment

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Improved theoretical estimation of mechanical reliability of optical fibers

Improved theoretical estimation of mechanical reliability of...

引用

Asia-pacific Optical Communications 2004

作者： Masao Tachikura Yoshinori Kurosawa Yoshikazu Namekawa Photo-Electronics Technology Research Center Advanced Technology Labs. Hitachi Cable Ltd. 5-1-1 Hitaka-cho Hitachi-shi Ibaraki-ken 319-1414 Japan Photo-Electronics Technology Research Center Advanced Technology Labs. Hitachi Cable Ltd. 5-1-1 Hitaka-cho Hitachi-shi Ibaraki-ken 319-1414 Japan Optical Fiber Design Dept. Information Systems Group Hitachi Cable Ltd. 5-1-1 Hitaka-cho Hitachi-shi Ibaraki-ken 319-1414 Japan

We propose an enhanced theory that can be commonly applied to fiber reliability evaluations under various stress and failure probability levels, under prolonged stress and in stressed fiber distributi

关键词： mechanical reliability proof test failure probability bending radius static fatigue two-point bending optical fiber

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