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力学与实践 ›› 2009, Vol. 31 ›› Issue (2): 89-91.doi: 10.6052/1000-0879-lxysj2008-295

• 教育研究 • 上一篇    下一篇

力学创新实验---曲梁和复合曲梁的应力测量

虞爱民1,舒伟杰2,朱金龙2,鲁书浓2,侯顺龙2   

  1. 1. 同济大学航空航天与力学学院
    2.
  • 收稿日期:2008-05-29 修回日期:2008-07-29 出版日期:2009-04-10 发布日期:2011-09-06
  • 通讯作者: 虞爱民 E-mail:aimin.yu@163.com

A NEW MECHANICAL EXPERIMENT-MEASUREMENT OF STRESSES IN HOMOGENEOUS CURVED BEAMS AND COMPOSITE CURVED BEAMS

Yu Aimin1, 2, 2, 2, 2   

  1. 1. School of Aerospace Engineering and Applied Mechanics, Tongji University, Shanghai 200092, China
    2.
  • Received:2008-05-29 Revised:2008-07-29 Online:2009-04-10 Published:2011-09-06
  • Contact: Yu Aimin E-mail:aimin.yu@163.com

摘要: 研制和开发了曲梁以及复合曲梁测量应力的创新实验装置, 通过该实验的设计、开发和应用,可以验证它的创新性和综合性,找出曲梁、复合曲梁与直 梁的诸多不同之处. 把该实验用于测试由钢制成的、钢与铜两种材料制成的,具有直角梯形 截面的简支梁在拱顶处受垂直集中力作用时的正应力和切应力,计算结果表明,理论解和实 验值吻合得很好.

Abstract: A new experiment equipment of measuring stress for homogeneous curved beams and composite curved beams is developed. This achievement of scientific research will be applied to educational experiment. Problems in engineering structures are introduced in the new experiment. Hence, it provides with an opportunity for students to improve their practical ability. The differences of curved beams, composite curved beams and straight beams can be found in the experiment. The present equipment can be used to measure the normal and shear stresses in simply supported curved beam made of steel and composite curved beam of steel and copper with trapezoid cross sections. The concentrated force is applied at the arch top of the curved beams. Good agreement between the experiment measurements and theoretical solutions is found.