于海蛟,钱利民,吴志超,王逾涯,陈栋梁,陈群志.某型飞机全尺寸雷达罩静强度分析与试验验证[J].装备环境工程,2017,14(12):55-60. YU Hai-jiao,QIAN Li-min,WU Zhi-chao,WANG Yu-ya,CHEN Dong-liang,CHEN Qun-zhi.Static Strength Analysis and Full Scale Test of a Certain Type Aircraft Radome[J].Equipment Environmental Engineering,2017,14(12):55-60.
某型飞机全尺寸雷达罩静强度分析与试验验证
Static Strength Analysis and Full Scale Test of a Certain Type Aircraft Radome
投稿时间:2017-07-09  修订日期:2017-12-15
DOI:10.7643/ issn.1672-9242.2017.12.011
中文关键词:  某型飞机  雷达罩  有限元分析  全尺寸试验  静力试验
英文关键词:a certain type aircraft  radome  finite element analysis  whole scale test  static strength test
基金项目:
作者单位
于海蛟 北京航空工程技术中心, 北京 100076 
钱利民 中航飞机股份有限公司, 西安 710089 
吴志超 北京航空工程技术中心, 北京 100076 
王逾涯 北京航空工程技术中心, 北京 100076 
陈栋梁 中航飞机股份有限公司, 西安 710089 
陈群志 北京航空工程技术中心, 北京 100076 
AuthorInstitution
YU Hai-jiao Beijing Aeronautical Technology Research Center, Beijing 100076, China 
QIAN Li-min AVIC Aircraft Co., Ltd., Xi'an 710089, China 
WU Zhi-chao Beijing Aeronautical Technology Research Center, Beijing 100076, China 
WANG Yu-ya Beijing Aeronautical Technology Research Center, Beijing 100076, China 
CHEN Dong-liang AVIC Aircraft Co., Ltd., Xi'an 710089, China 
CHEN Qun-zhi Beijing Aeronautical Technology Research Center, Beijing 100076, China 
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中文摘要:
      目的 考核某型飞机全尺寸雷达罩的静强度,验证其计算模型的准确性。方法 采用有限元计算和静力试验相结合的方法,对某型飞机全尺寸雷达罩的承载能力进行研究与试验验证。根据雷达罩的结构特点和载荷分布情况建立有限元计算模型,进行应力应变计算与强度校核,得到了雷达罩的应力应变云图。在此基础上,选用最严重载荷工况对雷达罩的承载能力进行试验验证。通过试验总体方案设计及加载实施方案优化设计,采用矢量加载技术和软硬结合的加载方式对雷达罩施加拉压载荷,保证各加载点的载荷均与所在表面的法向相同,与雷达罩实际受载情况一致。结果 雷达罩的应力水平较低,承载能力较高;试验实测应力结果与理论计算结果有偏差,但应力分布规律合理,与理论分析计算结果的趋势基本一致;静力试验结果证明雷达罩及其与机身连接结构能够满足静强度设计要求。结论 雷达罩静力试验测得的应变数据与有限元计算结果吻合较好,雷达罩本体及其与机身的连接结构满足强度设计要求。
英文摘要:
      Objective To evaluate the static strength of full-scale radome for a certain type aircraft and verify the accuracy of the calculation model. Methods The finite element analysis and static strength test were combined to study, test and verify the bearing capacity of full-scale radome of a certain type aircraft. A finite element module was established based on structure characteristics and load distribution of the radome to calculate stress and strain, check the strain strength and gain stress and stain contours of the radome. On this basis, load-carrying capacity of the radome was tested under the most series load cases. The general scheme of the test were designed and optimized in advance. As needed, “vector” loading technique and soft & hard-loading manner were adopted to apply the tensile load and pressure load on the radome, which made sure that the load of each point and the normal of its location surface were in the same direction. That means, the load-carrying conditions were consistent with the actual ones. Results The stress of the radome was low, the carrying capacity was high; the measured stress results was deviated from the theoretical calculation result, but the stress distribution was reasonable, and the theoretical analysis and calculation results had almost the same trend; static test results show that radar cover and fuselage connection structure could meet the requirements of static strength design. Conclusion The measured strain data during radome static strength test coincide quite well with the finite element calculation results; and the radome and its connecting structure with the frame meet the strength design requirements.
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