基于跨尺度等效弹性的航空装备损修性能评估

doi:10.12305/j.issn.1001-506X.2025.02.17

摘要/Abstract

摘要：

为解决装备系统在复杂损修模式下的性能评估问题, 提出一种跨尺度等效弹性仿真方法, 在保证计算精度的前提下, 通过跨尺度映射减少损修及其几何特征带来的建模负担。首先, 基于等效弹性理论, 在微尺度结构内, 用弹性参数的等效模拟和取代修理因素对本构行为带来的影响; 其次, 开展跨尺度建模, 将微尺度结构的力学行为映射到宏观装备系统中; 最后, 以浸水和穿孔修复后的航空雷达罩装备为案例验证对象进行验证实验。验证实验的结果表明, 分析结果精度均值为6.3%, 且极大地减小了试验和仿真工作量, 为复杂航空装备系统的损修性能评估提供思路。

关键词: 航空装备, 系统仿真, 等效弹性, 复合材料

Abstract:

To solve the performance evaluation of equipment systems in complex damage and repair mode, a cross-scale equivalent elasticity simulation method is proposed, which ensures the calculation accuracy and reduces the modeling burden caused by damage and repair and geometric features by cross-scale mapping. Firstly, the equivalent elasticity theory is introduced, and the equivalent elastic parameters are used to simulate and replace the influence of repair factors on the constitutive behavior in the micro-scale structure. Secondly, cross-scale modeling is carried out to map the mechanical behavior of the micro-scale structure to the macroscopic equipment system. Finally, experiment is carried out with the verification case of aviation radar radome after water-immersion or perforation repairing and the result of verification experiment shows that the average accuracy of the analysis results is 6.3%. It also greatly reduces the workload of testing and simulation and provides an idea for the damage and repair performance evaluation of complex aviation equipment systems.

Key words: aviation equipment, system simulation, equivalent elasticity, composite material

中图分类号:

V229

冯蕴雯, 宋祉岑, 路成, 陈晓宇. 基于跨尺度等效弹性的航空装备损修性能评估[J]. 系统工程与电子技术, 2025, 47(2): 508-517.

Yunwen FENG, Zhicen SONG, Cheng LU, Xiaoyu CHEN. Cross-scale equivalent elasticity-based damage and repair performance assessment of aviation equipment[J]. Systems Engineering and Electronics, 2025, 47(2): 508-517.

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损伤类型	序号	修理位置/mm			修理尺寸/mm
损伤类型	序号	X	Y	Z	修理尺寸/mm
浸水修理	1	490	612	-440	100
	2	411	410	-371
	3	204	50	0
双层蒙皮和芯子修理	4	-161	462	600	100
	5	-558	462	322
	6	-433	462	-390
	7	-178	62	-152

材料属性	E_x/GPa	E_y/GPa	v_xy	G_xy/GPa	G_xz/GPa	G_yz/GPa
平纹编制织物	23.6	21.0	0.12	1.65	1.7	1.7
蜂窝芯子1	4.5	4.5	0.12	2.10	38.3	18.7
蜂窝芯子2	4.5	4.5	0.12	4.50	15.0	25.3
修补蜂窝芯子	0.6	0.6	0.60	0.20	36.9	23.9

序号	损伤中心点坐标/mm			最近应变点	应变或位移测量点坐标/mm			距离/mm
序号	x	y	z	最近应变点	x	y	z	距离/mm
1	490	612	-440	31~33	507.2	662	-455	55
2	411	410	-371	37~39	465	530	-410	137
3	204	50	0	1	0	0	0	210
4	-161	462	600	13~15	0	512	572	170
5	-558	462	322	22~24	-656	512	87	259
6	-433	462	-390	43~45	-465	530	-410	77
7	-178	62	-152	19~21	-143.8	24.5	19	178

名称	E_x/MPa	E_y/MPa	v_xy	G_xy/MPa	G_xz/MPa	G_yz/MPa
7781织物+蜂窝芯子2	3 508	3 463	0.12	463	15.04	16.23
7781织物+蜂窝芯子1	3 509	3 466	0.12	463	34.01	18.15

类型	E_x/MPa	E_y/MPa	v_xy	G_xy/MPa	G_xz/MPa	G_yz/MPa
模量	3 508	3 463	0.12	371	12.56	13.55
误差/%	0.02	0.043	0	19.8	16.48	16.51