大学物理 ›› 2017, Vol. 36 ›› Issue (6): 50-51.doi: 10.16854 /j.cnki.1000-0712.2017.06.013

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质量非均匀分布的烟囱在倾倒过程中的力学分析

侯吉旋1,李志昂2,郭兴2,牛梽豪2   

  1. 1. 东南大学物理系,南京211189; 2. 东南大学吴健雄学院,南京211189
  • 收稿日期:2016-08-16 修回日期:2016-10-28 出版日期:2017-06-20 发布日期:2017-06-20
  • 作者简介:侯吉旋( 1983—) ,男,江西南昌人,东南大学物理系副教授.
  • 基金资助:
    国家自然科学基金( 11304037) 、江苏省自然科学基金( BK20130604) 、教育部博士点基金( 20130092120041) 资助

Mechanical analysis of the non-uniform falling chimney

HOU Ji-xuan1,LI Zhi-ang2,GUO Xing2,NIU Zhi-hao2   

  1. 1. Department of Physics,Southeast University,Nanjing,Jiangsu 211189,China; 2. Chien-Shiung Wu College,Southeast University,Nanjing,Jiangsu 211189,China
  • Received:2016-08-16 Revised:2016-10-28 Online:2017-06-20 Published:2017-06-20
  • Supported by:
     

摘要: 烟囱倒塌的过程中可能会在某处断裂.本文研究了质量非均匀的烟囱倾倒过程中各部位的受力与扭矩,并通过扭矩极大值点找出烟囱断裂位置.

关键词: 烟囱, 定轴转动, 断裂

Abstract: It is generally known that chimney might break at a certain place before it hit the ground during a demolition blasting. However,previous models have assumed that the mass distribution of the chimney is uniform. The chimney model analyzed in this paper is a more realistic one with non-uniform mass distribution.By seeking the maximum point of the torque,the possible rupture point of the chimney is given.

Key words: chimney, fixed-axis rotation, rupture

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