Finite element analysis of structural insulated panel with OSB skins against windborne debris impacts
Finite element analysis of structural insulated panel with OSB skins against windborne debris impacts
复制标题
OSB 蒙皮结构隔热板抗风载碎片影响的有限元分析
DOI：
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发表时间：
2015
期刊：
影响因子：
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通讯作者：
Qingfei Meng
中科院分区：
文献类型：
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作者：
H. Hao;Wensu Chen;Shuyang Chen;Qingfei Meng
以发泡聚苯乙烯（EPS）为芯材的定向刨花板（OSB）结构保温板（SIP）作为建筑围护结构在建筑行业中的应用越来越广泛。结构隔热板具有环境可持续性、经济性、易于安装和低导热性等优点，被认为是一种高效的隔热板。当建筑围护结构在强风事件期间受到风载碎片的冲击时，碎片可能会覆盖板，从而导致占主导地位的开口。主要开口可能会引起建筑物的内部压力差，导致建筑物倒塌。为了研究其抗冲击能力，在先前的研究中，使用气动炮系统对具有OSB蒙皮的SIP板进行了一系列经受4kg木材弹丸冲击的实验室测试。本文首先简要介绍了实验测试和结果。然后，本文提出了一个数值模型，利用商业软件LS-DYNA模拟风载碎片对SIP面板的影响。在数值模型中引入了LS-DYNA中OSB和EPS的材料模型。通过数值计算和试验结果的对比，验证了数值模型的准确性和可靠性。验证后的数值模型可用于进一步的数值模拟，得到SIP壁板的风载碎片冲击易损性曲线和易损性曲线。
Oriented strand board (i.e. OSB) skin structural insulated panel (SIP) with expanded polystyrene (EPS) foam core is becoming more and more widely used as building envelope in the building industry. The structural insulated panel is considered as an efficient panel owing to the advantages of being environmentally sustainable, economical, easy to install and low thermal conductivity, etc. When building envelope is impacted by windborne debris during strong wind event, the debris might perforate the panel, resulting in dominant openings. The dominant openings might cause differential internal pressurization of building and result in building collapse. To investigate the impact resistance capacity, a series of laboratory tests on the SIP panels with OSB skins subjected to a 4kg timber projectile impact were conducted by using a pneumatic cannon system in a previous study. A brief of the experimental tests and results is described first in this paper. This paper then presents a numerical model developed to simulate windborne debris impact on the SIP panels by using commercial software LS-DYNA. The material models of OSB and EPS available in LS-DYNA are incorporated into the numerical model. The accuracy and reliability of the numerical model are validated by comparing the numerical and experimental results in terms of failure modes, penetrated depth of projectile, displacement and strain on the back skin measured in the tests. The validated numerical model can be utilized to conduct more numerical simulations to obtain vulnerability curves and fragility curves of the SIP panel against windborne debris impact.