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Acta Armamentarii ›› 2014, Vol. 35 ›› Issue (8): 1230-1235.doi: 10.3969/j.issn.1000-1093.2014.08.015

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Dynamic Response of a Clamped Sandwich Beam under Impact of Low-Impulse Mass

JIANG Wen-zheng, LIU Ying   

  1. (Department of Mechanics, School of Civil Engineering, Beijing Jiaotong University, Beijing 100044,China)
  • Received:2013-08-25 Revised:2013-08-25 Online:2014-11-03
  • Contact: JIANG Wen-zheng E-mail:w1999_2005@aliyun.com

Abstract: Considering the coupling effects of face sheets and core, as well as the effects of core material in the deformation of the sandwich beam, an improved analytical model is proposed, and the dynamic response of a fully clamped sandwich beams under the impact of a low impulsive projectile is discussed. The bending effects of the core before the two face sheets arrive at the same velocity are considered in the proposed analytical model, which is different from the previous sandwich beam model. The comparison of experimental and numerical results indicates that the model can well predict the responses of the sandwich beams, and is available for the situation when the sandwich beam deforms.

Key words: solid mechanics, sandwich beam, projectile impact, analytical model, dynamic response

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