爆炸作用下金属面夹芯板力学性能研究  

Mechanical behavior of metallic sandwich panels under blast action

作　　者：王洪欣[1,2] 查晓雄[1] 余敏[1] 张梅松 

机构地区：[1]哈尔滨工业大学深圳研究生院,广东深圳518055 [2]筑博设计股份有限公司,广东深圳518000

出　　处：《建筑结构学报》2013年第S1期401-406,共6页Journal of Building Structures

摘　　要：为得到金属面夹芯板在爆炸作用下的动力响应,采用能量平衡原理和有限元分析相结合的方法对其进行研究。基于夹芯板在爆炸作用下的破坏特点,将其变形过程分为弯剪变形、弹性拉伸变形、塑性拉伸变形和拉伸断裂4个阶段。理论推导给出夹芯板全过程的变形公式,并给出了变形公式中主要阶段荷载的取值,即受拉爆炸荷载、屈服爆炸荷载和断裂爆炸荷载。采用有限元方法得到各参数对夹芯板抗爆性能的影响,并对夹芯板变形计算公式进行了验证。分析结果表明:夹芯板变形随爆炸作用的增加而增加,随着面板厚度、芯材厚度、芯材强度和板跨长度的增加而减小,而剪切模量对夹芯板变形影响较小。An energy balance based analytical method and finite element simulations were developed in this paper to study the dynamic response of metallic sandwich panels subject to blast loading.Based on the continuous deformation of sandwich panels under blast loading,its deformation process was divided into four main stages: bending and shearing deformation,elastic tensile deformation,plastic tensile deformation and tensile fracture.The formula of sandwich panel deformation process was also obtained by the theoretical derivation.The delimitation loading in the deformation process was also given,which includes tensile,yielding and cracking delimitation blast loadings.Moreover,parametric studies were then carried out to assess various factors that are influential in characterizing dynamic behavior of sandwich panels subject blast loads,and the deformation equation was verified through finite element modeling.It shows that,the deformation is increased with the blast loading,while decreased with the increase of thickness of face sheet and foam core,strength of core span of panel.The shear modulus of core has little effect on the deformation of panel.

关 键 词：夹芯板 爆炸作用 能量平衡 有限元分析 动力响应 

分 类 号：TU39[建筑科学—结构工程]