Dynamic response of clamped sandwich beams: analytical modeling

被引：3

作者：

Lang Li ^{[1
,2
]}

Bin Han ^{[3
,4
,5
]}

Qian-Cheng Zhang ^{[1
,6
]}

Zhen-Yu Zhao ^{[2
,7
]}

Tian Jian Lu ^{[2
,7
]}

机构：

[1] State Key Laboratory for Strength and Vibration of Mechanical Structures, Xi'an Jiaotong University

[2] State Key Laboratory of Mechanics and Control of Mechanical Structures, Nanjing University of Aeronautics and Astronautics

[3] School of Mechanical Engineering, Xi'an Jiaotong University

[4] School of Engineering, Brown University

[5] Research Institute of Xi'an Jiaotong University

[6] Key Laboratory of Intense Dynamic Loading and Effect

[7] Nanjing Center for Multifunctional Lightweight Materials and Structures (MLMS), Nanjing University of Aeronautics and Astronautics

来源：

Theoretical & Applied Mechanics Letters | 2019年 / 9 卷 / 06期

基金：

中国博士后科学基金; 中国国家自然科学基金;

关键词：

Sandwich beam; Cellular core; Shock loading; Analytical model;

D O I：

暂无

中图分类号：

O347.3 [冲击载荷下的材料强度];

学科分类号：

摘要：

An improved analytical model is developed to predict the dynamic response of clamped lightweight sandwich beams with cellular cores subjected to shock loading over the entire span.The clamped face sheets are simplified as a single-degree-of-freedom(SDOF) system, and the core is idealized using the rigid-perfectly-plastic-locking(RPPL) model. Reflection of incident shock wave is considered by incorporating the bending/stretching resistance of the front face sheet and compaction of the core. The model is validated with existing analytical predictions and FE simulation results, with good agreement achieved. Compared with existing analytical models, the proposed model exhibits superiority in two aspects: the deformation resistance of front face sheet during shock wave reflection is taken into account; the effect of pulse shape is considered. The practical application range of the proposed model is therefore wider.

引用

页码：391 / 396

页数：6

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