7 research outputs found

    对数修形复合滚柱活齿啮合刚度及承载性能研究

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    针对轮边减速系统大承载、长寿命的发展要求,提出一种对数修形复合滚柱活齿结构。结合当前对空心滚柱接触变形的研究,通过引入设计参数Δc和Δe,提出了一种计算对数修形复合滚柱啮合变形量的方法,分析了填充度和不同滚柱对啮合刚度的影响规律,利用有限元方法对不同滚柱啮合线处的等效应力分布进行了对比分析。结果表明,相同载荷条件下,对数修形复合滚柱活齿的啮合刚度略高于空心滚柱活齿的啮合刚度,且随填充度增大,啮合刚度减小;对数修形复合滚柱可有效改善边缘应力集中现象,使最大等效应力明显降低

    浅谈出版专业职业资格考试

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    结合参加全国出版专业职业资格中级考试的亲身体会,从考试介绍、题型和知识点分布、时间安排和答题技巧等方面介绍备考经验

    中国力学大会-2011暨钱学森诞辰100周年纪念大会简介

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    1会议概况 值此钱学森诞辰100周年和明年即将在北京举办第23届“世界力学家大会”(ICTAM一2012)之际,由中国科学技术协会和国家自然科学基金委员会指导,中国力学学会和哈尔滨工业大学主办,哈尔滨工业大学和中国力学学会办公室承办,中国科学院力学研究所、清华大学

    REVIEW OF THE CHINESE CONFERENCE ON THEORETICAL AND APPLIED MECHANICS 2001 IN MEMORIAL OF TSIEN HSUE-SHEN'S 100 TH ANNIVERSARY

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    本次力学大会比较全面地反映了我国力学学科的发展现状和最新成就,也体现了我国力学工作者开拓精神和创新意识明显提高,大会取得了圆满成功,此次盛会的顺利召开,必将对明年召开的ICTAM-2012起到了很好的宣传和推动作用

    Measurement of integrated luminosity of data collected at 3.773 GeV by BESIII from 2021 to 2024*

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    Amplitude analysis of the decays D0π+ππ+πD^0\rightarrow\pi^+\pi^-\pi^+\pi^- and D0π+ππ0π0D^0\rightarrow\pi^+\pi^-\pi^0\pi0

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    Determination of the number of ψ(3686) events taken at BESIII

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    The number of ψ(3686) events collected by the BESIII detector during the 2021 run period is determined to be (2259.3±11.1)×106 by counting inclusive ψ(3686) hadronic events. The uncertainty is systematic and the statistical uncertainty is negligible. Meanwhile, the numbers of ψ(3686) events collected during the 2009 and 2012 run periods are updated to be (107.7±0.6)×106 and (345.4±2.6)×106, respectively. Both numbers are consistent with the previous measurements within one standard deviation. The total number of ψ(3686) events in the three data samples is (2712.4±14.3)×10^
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