Acta Aeronautica et Astronautica Sinica ›› 2026, Vol. 47 ›› Issue (5): 232422.doi: 10.7527/S1000-6893.2025.32422
• Solid Mechanics and Vehicle Conceptual Design • Previous Articles
Yue LIU1,2, Hantao REN3, Xiaofeng XUE1,2, Zhicen SONG1,2, Cheng LU1,2, Yunwen FENG1,2(
)
Received:2025-06-16
Revised:2025-07-10
Accepted:2025-07-23
Online:2025-07-28
Published:2025-07-25
Contact:
Yunwen FENG
E-mail:fengyunwen@nwpu.edu.cn
Supported by:CLC Number:
Yue LIU, Hantao REN, Xiaofeng XUE, Zhicen SONG, Cheng LU, Yunwen FENG. Prediction of bearing strength for composite bolted joint structures based on MCI-PINN[J]. Acta Aeronautica et Astronautica Sinica, 2026, 47(5): 232422.
Table 1
Single shear bearing data for single bolt joint structure of X850 material
| 数据集 | 铺层比例 (0°/±45°/90°) | 孔径均值/mm | 厚度均值/mm | 数据量/条 |
|---|---|---|---|---|
| 训练集 | (18/73/9) | 6.35 | 6.345 | 11 |
| (26/70/4) | 6.35 | 4.255 | 11 | |
| (42/50/8) | 6.35 | 4.550 | 11 | |
| (36/55/9) | 6.35 | 4.255 | 11 | |
| (9/87/4) | 6.35 | 4.376 | 11 | |
| (27/59/14) | 6.35 | 4.065 | 12 | |
| (61/35/4) | 6.35 | 4.417 | 10 | |
| (40/60/0) | 6.35 | 3.841 | 12 | |
| 测试集 | (18/73/9) | 6.35 | 4.070 | 11 |
| (50/40/10) | 6.35 | 3.850 | 9 |
Table 4
Results of nonlinear identification
| 序号 | 参数 | 输入参数 | 非线性辨识函数 | 函数形式 | MRE/% | MSE |
|---|---|---|---|---|---|---|
| 1 | 泊松比 | x1 | f2(x) | f2(x)=ax2+bx | 6.70 | 2 666 |
| 2 | 90°压缩强度 | x2 | f8(x) | 8.61 | 3 604 | |
| 3 | 0°压缩模量 | x3 | f3(x) | f3 (x)=ax3+bx2+cx | 8.94 | 3 811 |
| 4 | 0°压缩强度 | x4 | f8(x) | 8.87 | 3 767 | |
| 5 | 90°压缩模量 | x5 | f3(x) | f3 (x)=ax3+bx2+cx | 8.42 | 3 494 |
| 6 | 纵横剪切强度 | x6 | f2(x) | f2(x)=ax2+bx | 8.32 | 3 435 |
| 7 | 树脂含量 | x7 | f4(x) | f4(x)=a | 7.94 | 3 227 |
| 8 | 纤维体积含量 | x8 | f8(x) | 8.91 | 3 795 | |
| 9 | 0°层比例 | x9 | f2(x) | f2(x)=ax2+bx | 8.40 | 3 485 |
| 10 | 90°层比例 | x10 | f5(x) | f5(x)=alnx | 9.38 | 3 970 |
| 11 | 45°层比例 | x11 | f8(x) | 8.34 | 3 446 | |
| 12 | -45°层比例 | x12 | f8(x) | 8.34 | 3 446 | |
| 13 | 厚度孔径比 | x13 | f8(x) | 4.51 | 2 068 | |
| 14 | 填充孔拉伸强度 | x14 | f2(x) | f2(x)=ax2+bx | 5.53 | 3 261 |
| 15 | 填充孔压缩强度 | x15 | f8(x) | 8.30 | 3 425 |
Table 5
Comparison of accuracy information of single bolt bearing strength
| 铺层比例(0°/±45°/90°) | 模型 | MRE/% | MAE | RME/% | RSDE/% | R2 | RMSE |
|---|---|---|---|---|---|---|---|
| (18/73/9) | ANN | 4.37 | 28.97 | 2.38 | 31.09 | 0.31 | 37.50 |
| PINN | 2.69 | 18.01 | 1.71 | 22.81 | 0.73 | 23.63 | |
| MCI-PINN | 1.24 | 7.89 | 0.87 | 4.72 | 0.96 | 9.34 | |
| (50/40/10) | ANN | 3.98 | 27.18 | 1.56 | 32.21 | 0.36 | 28.99 |
| PINN | 2.76 | 18.74 | 1.37 | 20.79 | 0.63 | 22.00 | |
| MCI-PINN | 1.27 | 8.66 | 0.43 | 5.78 | 0.93 | 9.83 |
Table 6
Single shear bearing data for single bolt joint structure of X850 material
| 数据集 | 铺层比例(0°/±45°/90°) | 孔径均值/mm | 厚度均值/mm | 数据量/条 |
|---|---|---|---|---|
| L1 | (18/73/9) | 6.35 | 6.345 | 11 |
| (26/70/4) | 6.35 | 4.255 | 11 | |
| L2 | (42/50/8) | 6.35 | 4.550 | 11 |
| (36/55/9) | 6.35 | 4.255 | 11 | |
| L3 | (9/87/4) | 6.35 | 4.376 | 11 |
| (27/59/14) | 6.35 | 4.065 | 12 | |
| L4 | (61/35/4) | 6.35 | 4.417 | 10 |
| (40/60/0) | 6.35 | 3.841 | 12 | |
| L5 | (18/73/9) | 6.35 | 4.070 | 11 |
| (50/40/10) | 6.35 | 3.850 | 9 |
Table 7
Comparison of accuracy information of single bolt bearing strength in Group L1
| 铺层比例(0°/±45°/90°) | 模型 | MRE/% | MAE | RME/% | RSDE/% | R2 | RMSE |
|---|---|---|---|---|---|---|---|
| (18/73/9) | ANN | 1.29 | 7.37 | 0.40 | 32.34 | 0.49 | 7.51 |
| PINN | 0.78 | 4.38 | 0.39 | 18.60 | 0.67 | 6.06 | |
| MCI-PINN | 0.54 | 3.10 | 0.27 | 2.44 | 0.91 | 3.22 | |
| (26/70/4) | ANN | 1.69 | 10.94 | 1.18 | 25.26 | 0.51 | 18.10 |
| PINN | 0.83 | 8.46 | 0.84 | 19.66 | 0.69 | 14.37 | |
| MCI-PINN | 0.57 | 4.13 | 0.48 | 4.00 | 0.95 | 5.94 |
Table 8
Comparison of accuracy information of single bolt bearing strength in Group L2
| 铺层比例(0°/±45°/90°) | 模型 | MRE/% | MAE | RME/% | RSDE/% | R2 | RMSE |
|---|---|---|---|---|---|---|---|
| (42/50/8) | ANN | 1.51 | 9.38 | 0.81 | 29.73 | 0.27 | 14.62 |
| PINN | 0.79 | 4.97 | 0.71 | 16.88 | 0.66 | 9.96 | |
| MCI-PINN | 0.26 | 1.62 | 0.24 | 4.45 | 0.91 | 5.00 | |
| (36/55/9) | ANN | 1.30 | 12.91 | 0.82 | 33.63 | 0.35 | 17.11 |
| PINN | 0.81 | 5.39 | 0.77 | 17.38 | 0.75 | 10.48 | |
| MCI-PINN | 0.49 | 2.85 | 0.48 | 4.78 | 0.97 | 3.35 |
Table 9
Comparison of accuracy information of single bolt bearing strength in Group L3
| 铺层比例(0°/±45°/90°) | 模型 | MRE/% | MAE | RME/% | RSDE/% | R2 | RMSE |
|---|---|---|---|---|---|---|---|
| (9/87/4) | ANN | 2.24 | 14.09 | 0.57 | 27.32 | 0.31 | 15.23 |
| PINN | 1.15 | 7.18 | 0.48 | 21.59 | 0.79 | 8.28 | |
| MCI-PINN | 0.51 | 3.19 | 0.16 | 3.36 | 0.95 | 3.73 | |
| (27/59/14) | ANN | 2.52 | 16.75 | 0.88 | 29.59 | 0.38 | 18.36 |
| PINN | 1.91 | 12.66 | 0.88 | 19.62 | 0.70 | 12.81 | |
| MCI-PINN | 0.92 | 6.08 | 0.04 | 4.75 | 0.93 | 6.14 |
Table 10
Comparison of accuracy information of single bolt bearing strength in Group L4
| 铺层比例(0°/±45°/90°) | 模型 | MRE/% | MAE | RME/% | RSDE/% | R2 | RMSE |
|---|---|---|---|---|---|---|---|
| (61/35/4) | ANN | 3.47 | 22.10 | 0.23 | 26.92 | 0.35 | 22.50 |
| PINN | 2.48 | 15.60 | 0.22 | 19.77 | 0.61 | 17.55 | |
| MCI-PINN | 0.97 | 6.10 | 0.05 | 4.30 | 0.95 | 6.30 | |
| (40/60/0) | ANN | 1.38 | 9.25 | 0.28 | 29.43 | 0.38 | 11.34 |
| PINN | 0.89 | 6.00 | 0.12 | 17.53 | 0.78 | 6.68 | |
| MCI-PINN | 0.52 | 3.50 | 0.12 | 1.02 | 0.93 | 3.70 |
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