玻璃纤维增强树脂基复合材料夹芯板-钢板连接接头的弯曲性能

李永胜; 吴健; 王纬波

doi:10.13801/j.cnki.fhclxb.20170821.001

玻璃纤维增强树脂基复合材料夹芯板-钢板连接接头的弯曲性能

中国船舶科学研究中心船舶振动噪声重点实验室, 无锡 214082

基金项目: 深水半潜式支持平台研发专项（工信部联装2016[546]）

详细信息

通讯作者:
李永胜,硕士,高级工程师,研究方向为复合材料力学,E-mail:liyongsheng@cssrc.com.cn

中图分类号: TB332
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出版历程
- 收稿日期: 2017-06-11
- 修回日期: 2017-08-03
- 刊出日期: 2018-06-14

Flexural behavior of hybrid joints of glass fiber reinforced composite sandwich panel-steel plate

National Key Laboratory of Science and Technology on Ship Vibration & Noise, China Ship Scientific Research Center(CSSRC), Wuxi 214082, China

摘要

摘要: 以PVC泡沫或Balsa轻木为芯材的玻璃纤维增强树脂基复合材料（GRP）夹芯板目前广泛应用于船舶与海洋工程结构中。论文设计不同参数的GRP夹芯板-钢板混合接头模型，进行四点弯曲加载下的静力及疲劳试验研究，同时运用ABAQUS软件结合MSC.fatigue软件对接头的静态及疲劳弯曲失效进行数值模拟，分析了接头的弯曲强度、刚度和失效模式，并研究了接头填充区材料及长度、钢板嵌入填充区长度等参数对接头弯曲性能的影响。结果表明：弯曲载荷作用下接头破坏发生在连接结合部，失效模式则因填充区的不同设计而不同；对提高接头的弯曲性能较为明显的设计参数包括将钢板延伸到接头填充区或者选择Balsa轻木替代PVC泡沫芯材；对于受到疲劳弯曲载荷的接头模型，在较大疲劳载荷水平下，所有试件在未达到10⁶次循环时均发生了疲劳破坏；而在相对较小的疲劳载荷水平下，经过10⁶次循环后所有试件全部完好，并且接头的剩余强度与疲劳试验前的静强度相近，表明小载荷水平下接头的疲劳次数对其承载能力无影响。
- 玻璃纤维增强树脂基复合材料夹芯板 /
- 接头 /
- 弯曲强度 /
- 疲劳特性 /
- 失效模式
Abstract: Glass fiber reinforced resin composite(GRP) sandwich panels with PVC foam or Balsa wood as core material are widely used in ship construction and ocean engineering. Flexural behaviors of hybrid joints of sandwich panel-steel plate which subjected to static and fatigue loads respectively, were investigated with both numerical and experimental methods. Different parameter sets of hybrid joint specimens were designed and fabricated. Static and fatigue four-point bending experiments were implemented to study the bending strength, stiffness and failure modes of joints. ABAQUS and MSC. Fatigue softwares were also adopted to simulate their failure characteristics. The influences of filler material, geometric length of filler and the inserted length of steel plate on the bending performance of the joint were respectively assessed. The results show that failure occurs near the filler area of joints under bending load, and failure mode mainly depends on different filler parameters. Extending the steel end to filler area can obviously improve bending performance of joint, as well as adopting Balsa wood as filler material. All specimens are failed before 10⁶ cycles in the larger fatigue load case, while in the lower fatigue load case, all the specimens are nearly intact after 10⁶ cycles and their residual strengths are quite close to their static ultimate strength. It is indicated that fatigue cycles with smaller loading amplitudes have little influence on their loading capacities.
- glass fiber reinforced resin composite(GRP) sandwich panel /
- joint /
- bending strength /
- fatigue characteristic /
- failure mode

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