材料科学
复合材料
夹层结构复合材料
夹芯板
结构工程
泡沫铝夹层
正交异性材料
各向异性
有限元法
极限抗拉强度
复合数
抗压强度
刚度
蜂巢
作者
Monika Chuda-Kowalska,Andrzej Garstecki
出处
期刊:Steel and Composite Structures
[Techno-Press]
日期:2016-01-20
卷期号:20 (1): 43-56
被引量:8
标识
DOI:10.12989/scs.2016.20.1.043
摘要
Polyurethane foam with low density used in sandwich panels is examined in the paper. A series of experiments was carried out to identify mechanical parameters of the foam. Various experimental methods were used for determining the shear modulus, namely a four and three point bending tests (the most common in engineering practice), a double-lap shear test and a torsion test. The behavior of PU in axial compression and tension was also studied. The experiments revealed pronounced anisotropy of the PU foam. An orthotropic model is proposed. Limitations of application of isotropic model of PU in engineering practice is also discussed.
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