| 引用本文: | 查晓雄,唐智荣,冯琳.硅酸钙-聚氨酯夹芯板的抗弯性能[J].哈尔滨工业大学学报,2014,46(6):1.DOI:10.11918/j.issn.0367-6234.2014.06.001 |
| ZHA Xiaoxiong,TANG Zhirong,FENG Lin.Bending properties of sandwich panels with calcium-silicate faces and polyurethane cores[J].Journal of Harbin Institute of Technology,2014,46(6):1.DOI:10.11918/j.issn.0367-6234.2014.06.001 |
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| 摘要: |
| 为研究非金属面夹芯板受弯破坏时的力学性能,考虑芯材剪切变形的影响,利用力与变形的平衡微分关系,推导并简化在均布荷载和集中荷载作用下单跨简支夹芯板的弯曲变形与承载力计算公式．通过真空加载和沙袋堆载分别对硅酸钙-聚氨酯夹芯板进行了两组弯曲试验,并用软件ABAQUS进行了有限元模拟,分别得到其正常使用极限状态和承载能力极限状态时的变形和破坏荷载,以及相应的荷载-位移曲线．结果表明,理论计算简化公式、试验结果和有限元结果三者吻合较好,因而该理论简化公式可用于计算这种非金属面夹芯板的弯曲变形和承载力． |
| 关键词: 硅酸钙面板 聚氨酯芯材 夹芯板 抗弯性能 弯曲变形 |
| DOI：10.11918/j.issn.0367-6234.2014.06.001 |
| 分类号:TU502+.6 |
| 基金项目: |
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| Bending properties of sandwich panels with calcium-silicate faces and polyurethane cores |
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ZHA Xiaoxiong, TANG Zhirong, FENG Lin
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(Shenzhen Graduate School, Harbin Institute of Technology, 518055 Shenzhen, Guangdong,China)
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| Abstract: |
| To study on mechanical properties of non-metal faced sandwich panels under bending load, the force-deformation relationships of differential equations were used to derive and simplify deformation calculate formulas and bearing capacity calculate formulas of the single-span simply supported sandwich panels under uniformly distributed load and concentrated load, considering the influence of the shear deformation of core. Bending properties of two groups of sandwich panels with calcium-silicate (CS) faces and polyurethane (PU) cores were tested through vacuum chamber loading and sandbag loading and they were analyzed through the finite element methods (FEM) with software ABAQUS. Bending deflection and bending bearing capacity of sandwich panels in serviceability limit states and bearing capacity limit states are got separately and the corresponding load-displacement curves are drew. The results show that the theoretical calculation results are identical to the experimental results and FEM results. It is concluded that the simplified formulas can be used to calculate accurately bending deflection and bending bearing capacity of non-metal faced sandwich panels. |
| Key words: calcium silicate (CS) faces polyurethane (PU) cores sandwich panels bending properties bending deflection |
