Chinese Journal of Ship Research, Volume. 18, Issue 2, 64(2023)
Ultimate strength analysis of composite stiffened panels based on multi-scale approach
Figures & Tables(18)
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Table 1. The laying condition of T-stiffened panel
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铺层情况 铺层角度/(°) 铺层厚度/mm 底板 CSM/WR/CSM/WR/CSM/WR/CSM/WR/CSM 0 1.250 (CSM)，0.979 (WR) T型材 CSM/WR/WR/WR/WR/CSM/WR/WR/WR/WR/WR/CSM 0
Table 2. Modeling parameters for microscopic RVE models of CSM and WR
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模型参数 CSM纤维束 WR纱线 组成 C-玻璃纤维丝、 聚酯树脂 E-玻璃纤维丝、 聚酯树脂 纤维排列方式 定向分布 定向分布 纤维丝直径/μm 0.014 5 0.014 5 纤维含量 0.71 0.80
Table 3. Modeling parameters for mesoscopic RVE models of CSM and WR
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模型参数 CSM单层板 WR单层板 纤维排列方式 随机分布 编织型 纤维束参数 直径0.188 mm 纱线宽度1.80 mm，厚度0.15 mm， 纱线间距2.00 mm 纤维含量 0.33 0.50
Table 4. Parameters of fiber and matrix material
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材料参数 C-玻璃纤维丝 E-玻璃纤维丝 聚酯树脂基体 密度/(kg·m−3) 2 520 2 580 1 300 弹性模量/MPa 69 000 72 000 2 000 泊松比 0.20 0.22 0.35 强度/MPa 3 300 3 400 40
Table 5. Microscopic and mesoscopic equivalent stiffness of CSM and WR
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参数 微观 细观 CSM纤维束 WR纱线 CSM单层板 WR单层板 E11/MPa 34 343.0 37 257.0 6 529.5 14 228.5 E22/MPa 7 434.0 7 794.0 6 529.5 14 228.5 E33/MPa 6 705.0 7 445.0 6 529.5 5 083.0 G12/MPa 3 376.0 3 376.0 2 473.3 2 055.0 G13/MPa 2 915.0 3 022.0 2 473.3 1 511.0 G23/MPa 2 585.0 2 554.0 2 473.3 1 511.0 V12 0.25 0.26 0.32 0.12 V13 0.26 0.26 0.32 0.38 V23 0.42 0.37 0.32 0.38
Table 6. Meso-and macro-scale strength values of CSM and WR
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等效材料参数 轴向拉伸 应力/MPa 轴向压缩 应力/MPa 横向拉伸 应力/MPa 横向压缩 应力/MPa 面内剪切 应力/MPa 面外剪切 应力/MPa 细观 CSM纤维束 1 523.0 1 547.2 116.5 221.0 30 60.5 WR纱线 1 650.0 1 685.5 211.2 236.9 31.2 107.3 宏观 CSM单层板 79.0 117.5 79.0 117.5 33.0 33.0 WR单层板 118.0 91.5 118.0 91.5 43.0 57.0
Table 7. Mechanical properties of CSM and WR laminates
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力学参数 CSM单层板 WR单层板 计算值 规范值 计算值 规范值 极限拉伸强度/MPa 79 < 91 118 < 190 拉伸模量/MPa 6 529.5 < 6 950.0 14 228.5 < 14 500.0 极限压缩强度/MPa 117.5 < 121.5 91.5 < 147.0 极限剪切强度/MPa 33.0 < 64.4 57.0 < 78.0 剪切模量/MPa 2 473.3 < 2 801.0 2 055.0 < 3 090.0
Table 8. Parametric modeling parameters
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参数 数值 CSM纤维束含量 0.27，0.30，0.33，0.36，0.39 CSM纤维束直径/mm 0.15，0.17，0.19，0.21，0.23 WR编织角度/(º) 35，40，45，50，55 WR纱线横截面积/mm2 0.19，0.20，0.21，0.22，0.23
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Xiaoduan ZHANG, Bin LIU, Weiguo WU, Jiajing LEI, Qing WEI. Ultimate strength analysis of composite stiffened panels based on multi-scale approach[J]. Chinese Journal of Ship Research, 2023, 18(2): 64
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Received: Jul. 14, 2022
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Published Online: Mar. 20, 2025
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