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In order to study the locking-swing phenomenon and swing suppression method during the pyrotechnic driving-locking process of aerocraft door, an explicit dynamic finite element simulation is conducted for an aircraft door opening-locking mechanism driven by a pyrotechnic actuator. The pyrotechnic driving-locking process of the mechanism is simulated in stages and verified compared with the pyrotechnic driving test. The locking-swing phenomenon and mechanism of the door are revealed, and swing suppression method is proposed. The research shows that the simulation method is effective, reproducing the experimental locking-swing phenomenon, and the swing angle is basically consistent with high-speed photography results. A single-freedom torsional vibration model can be used to estimate the swing characteristics of the door. Increasing the stiffness of the actuator or supported structure, or enhancing the door goose neck, has limited effect on swing suppression. Weakening the door goose neck, making it under plastic deformation during door swing, can effectively suppress the swing angle, and meet the demand for pyrotechnic opening of the door in emergency situations.
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为了研究舱门燃气冲击展开-锁止过程中的锁止摆动现象及其抑制方法,针对某飞行器上的一种燃气作动器驱动的舱门展开-锁止机构,采用显式动力学有限元仿真分析方法,对舱门机构燃气展开-锁止过程分阶段进行仿真分析,与舱门冲击燃气展开试验对比验证建模合理性,揭示舱门锁止摆动现象和机理,进一步提出锁止摆动抑制方法。研究表明,仿真建模方法合理有效,复现了舱门锁止后大幅摆动的试验现象,锁止摆动过程中摆动角度与高速摄影基本一致;可采用单自由度扭转振动模型估计舱门锁止后的摆动特性;提高作动器、机身刚度或增强舱门鹅颈,对舱门锁止摆动的抑制效果较为有限;削弱舱门鹅颈,使其在舱门锁止后局部进入塑性,能够有效抑制舱门的锁止摆动,满足紧急情况下舱门燃气展开的需求。
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刘 赛(1988—),男,博士,高级工程师,主要研究方向为结构动力学。
姚宇地(1991—),男,工程师,主要研究方向为结构强度设计。
李克诚(1988—),男,博士,工程师,主要研究方向为结构强度设计。
孔文秦(1978—),男,研究员,主要研究方向为起落架设计。
徐方舟(1989—),男,高级工程师,主要研究方向为起落架设计。
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刘 赛(1988—),男,博士,高级工程师,主要研究方向为结构动力学。
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刘 赛(1988—),男,博士,高级工程师,主要研究方向为结构动力学。
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姚宇地(1991—),男,工程师,主要研究方向为结构强度设计。
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李克诚(1988—),男,博士,工程师,主要研究方向为结构强度设计。
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李克诚(1988—),男,博士,工程师,主要研究方向为结构强度设计。
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孔文秦(1978—),男,研究员,主要研究方向为起落架设计。
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徐方舟(1989—),男,高级工程师,主要研究方向为起落架设计。
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徐方舟(1989—),男,高级工程师,主要研究方向为起落架设计。
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Aircraft door opening-locking mechanism driven by a pyrotechnic actuator, figureFileSmall=8F+TyoS0+3xPFKQ1TBgBSA==, figureFileBig=Bv28GjiJDIb4CJFyoRYsGg==, tableContent=null), ArticleFig(id=1189594643760144695, tenantId=1146029695717560320, journalId=1146119989267898375, articleId=1189584025527247092, language=CN, label=图1, caption=
燃气作动器驱动的舱门展开-锁止机构, figureFileSmall=8F+TyoS0+3xPFKQ1TBgBSA==, figureFileBig=Bv28GjiJDIb4CJFyoRYsGg==, tableContent=null), ArticleFig(id=1189594643844030776, tenantId=1146029695717560320, journalId=1146119989267898375, articleId=1189584025527247092, language=EN, label=Fig.2, caption=
High-speed photography results of the pyrotechnic driving test, figureFileSmall=HtrO+DXtJHPm9jdn0g4Isw==, figureFileBig=Xs6G0/lnzxOtbDsa9xW1mg==, tableContent=null), ArticleFig(id=1189594643902751033, tenantId=1146029695717560320, journalId=1146119989267898375, articleId=1189584025527247092, language=CN, label=图2, caption=
试验现场的高速摄影结果, figureFileSmall=HtrO+DXtJHPm9jdn0g4Isw==, figureFileBig=Xs6G0/lnzxOtbDsa9xW1mg==, tableContent=null), ArticleFig(id=1189594643969859898, tenantId=1146029695717560320, journalId=1146119989267898375, articleId=1189584025527247092, language=EN, label=Fig.3, caption=
Curve of the door swing angle, figureFileSmall=45+JuZXxQF9SejrI/r0H7w==, figureFileBig=SZkflp+DtQY5T6xTGOFfgw==, tableContent=null), ArticleFig(id=1189594644020191547, tenantId=1146029695717560320, journalId=1146119989267898375, articleId=1189584025527247092, language=CN, label=图3, caption=
舱门打开角度-时间曲线, figureFileSmall=45+JuZXxQF9SejrI/r0H7w==, figureFileBig=SZkflp+DtQY5T6xTGOFfgw==, tableContent=null), ArticleFig(id=1189594644078911804, tenantId=1146029695717560320, journalId=1146119989267898375, articleId=1189584025527247092, language=EN, label=Fig.4, caption=
Simplified model during the door opening stage, figureFileSmall=CAFl4i7662+8pbFCmlqlVQ==, figureFileBig=e/jgX81wAi9DO+ktM2tXhA==, tableContent=null), ArticleFig(id=1189594644146020669, tenantId=1146029695717560320, journalId=1146119989267898375, articleId=1189584025527247092, language=CN, label=图4, caption=
舱门展开阶段模型简化示意, figureFileSmall=CAFl4i7662+8pbFCmlqlVQ==, figureFileBig=e/jgX81wAi9DO+ktM2tXhA==, tableContent=null), ArticleFig(id=1189594644200546622, tenantId=1146029695717560320, journalId=1146119989267898375, articleId=1189584025527247092, language=EN, label=Fig.5, caption=
Finite element model during the door opening stage, figureFileSmall=0jKmkXe7M7PdmctB7bsY8Q==, figureFileBig=UZM+b3zq8UVsOMif10/F1g==, tableContent=null), ArticleFig(id=1189594644255072575, tenantId=1146029695717560320, journalId=1146119989267898375, articleId=1189584025527247092, language=CN, label=图5, caption=
舱门展开阶段模型简化示意, figureFileSmall=0jKmkXe7M7PdmctB7bsY8Q==, figureFileBig=UZM+b3zq8UVsOMif10/F1g==, tableContent=null), ArticleFig(id=1189594644309598528, tenantId=1146029695717560320, journalId=1146119989267898375, articleId=1189584025527247092, language=EN, label=Fig.6, caption=
Simplified model during the door locking stage, figureFileSmall=ii5SNQ1jlem5HIzqhfDd7w==, figureFileBig=bINfMX0cRgBqhRQPqpYXgA==, tableContent=null), ArticleFig(id=1189594645312037185, tenantId=1146029695717560320, journalId=1146119989267898375, articleId=1189584025527247092, language=CN, label=图6, caption=
舱门锁止阶段模型简化示意, figureFileSmall=ii5SNQ1jlem5HIzqhfDd7w==, figureFileBig=bINfMX0cRgBqhRQPqpYXgA==, tableContent=null), ArticleFig(id=1189594645370757442, tenantId=1146029695717560320, journalId=1146119989267898375, articleId=1189584025527247092, language=EN, label=Fig.7, caption=
Finite element model during the door locking stage, figureFileSmall=jZCITlirFWTpLAdMGjfiKg==, figureFileBig=+2ivYGxbeCCwbs1k7mbvYw==, tableContent=null), ArticleFig(id=1189594645433672003, tenantId=1146029695717560320, journalId=1146119989267898375, articleId=1189584025527247092, language=CN, label=图7, caption=
舱门锁止阶段的有限元模型, figureFileSmall=jZCITlirFWTpLAdMGjfiKg==, figureFileBig=+2ivYGxbeCCwbs1k7mbvYw==, tableContent=null), ArticleFig(id=1189594645488197956, tenantId=1146029695717560320, journalId=1146119989267898375, articleId=1189584025527247092, language=EN, label=Fig.8, caption=
Simulation result of the door swing angle, figureFileSmall=ouR8ng2krUuoc+BpdDOS+A==, figureFileBig=pQvCdplLM7c6aAHwgDTMxQ==, tableContent=null), ArticleFig(id=1189594645546918213, tenantId=1146029695717560320, journalId=1146119989267898375, articleId=1189584025527247092, language=CN, label=图8, caption=
舱门打开角度-时间曲线的仿真结果, figureFileSmall=ouR8ng2krUuoc+BpdDOS+A==, figureFileBig=pQvCdplLM7c6aAHwgDTMxQ==, tableContent=null), ArticleFig(id=1189594645614027078, tenantId=1146029695717560320, journalId=1146119989267898375, articleId=1189584025527247092, language=EN, label=Fig.9, caption=
Comparison of simulation results with high-speed photography, figureFileSmall=cVxcZLxd5p4RjetFnW2i/g==, figureFileBig=nu+yHWhnzKXyl0JTdKQNDw==, tableContent=null), ArticleFig(id=1189594645672747335, tenantId=1146029695717560320, journalId=1146119989267898375, articleId=1189584025527247092, language=CN, label=图9, caption=
仿真结果与高速摄影的比较, figureFileSmall=cVxcZLxd5p4RjetFnW2i/g==, figureFileBig=nu+yHWhnzKXyl0JTdKQNDw==, tableContent=null), ArticleFig(id=1189594645739856200, tenantId=1146029695717560320, journalId=1146119989267898375, articleId=1189584025527247092, language=EN, label=Fig.10, caption=
Single-freedom torsional vibration model, figureFileSmall=QtBuji6Ty5u9rvab9mUllQ==, figureFileBig=pFPckXzhPzJn3qB+0gpOfQ==, tableContent=null), ArticleFig(id=1189594645794382153, tenantId=1146029695717560320, journalId=1146119989267898375, articleId=1189584025527247092, language=CN, label=图10, caption=
单自由度扭转振动模型, figureFileSmall=QtBuji6Ty5u9rvab9mUllQ==, figureFileBig=pFPckXzhPzJn3qB+0gpOfQ==, tableContent=null), ArticleFig(id=1189594645853102410, tenantId=1146029695717560320, journalId=1146119989267898375, articleId=1189584025527247092, language=EN, label=Fig.11, caption=
Door swing angle of increasing the equivalent spring stiffness, figureFileSmall=nu+z8EUqojtvKeE5sBQL4A==, figureFileBig=I9DwjwuTU1Bq9QVGHdapJg==, tableContent=null), ArticleFig(id=1189594645924405579, tenantId=1146029695717560320, journalId=1146119989267898375, articleId=1189584025527247092, language=CN, label=图11, caption=
提高等效弹簧刚度后的舱门打开角度-时间曲线, figureFileSmall=nu+z8EUqojtvKeE5sBQL4A==, figureFileBig=I9DwjwuTU1Bq9QVGHdapJg==, tableContent=null), ArticleFig(id=1189594645983125836, tenantId=1146029695717560320, journalId=1146119989267898375, articleId=1189584025527247092, language=EN, label=Fig.12, caption=
Designs of the door goose neck, figureFileSmall=QEw6iKbUgUNFvMg84OswbQ==, figureFileBig=gog5+8mACxRj7f2Dwa29Pw==, tableContent=null), ArticleFig(id=1189594646046040397, tenantId=1146029695717560320, journalId=1146119989267898375, articleId=1189584025527247092, language=CN, label=图12, caption=
多个鹅颈设计方案, figureFileSmall=QEw6iKbUgUNFvMg84OswbQ==, figureFileBig=gog5+8mACxRj7f2Dwa29Pw==, tableContent=null), ArticleFig(id=1189594646104760654, tenantId=1146029695717560320, journalId=1146119989267898375, articleId=1189584025527247092, language=EN, label=Fig.13, caption=
Door swing angle of different goose neck designs, figureFileSmall=r0EEip71oeflmOB6SfxFYA==, figureFileBig=NnP5MMnF98fNdutxawlzIA==, tableContent=null), ArticleFig(id=1189594646167675215, tenantId=1146029695717560320, journalId=1146119989267898375, articleId=1189584025527247092, language=CN, label=图13, caption=
多个鹅颈设计方案的舱门打开角度-时间曲线, figureFileSmall=r0EEip71oeflmOB6SfxFYA==, figureFileBig=NnP5MMnF98fNdutxawlzIA==, tableContent=null), ArticleFig(id=1189594646230589776, tenantId=1146029695717560320, journalId=1146119989267898375, articleId=1189584025527247092, language=EN, label=Fig.14, caption=
Equivalent plastic strain distribution of weakening the door goose neck, figureFileSmall=u//GTYAvXgz4sN98IDbVkA==, figureFileBig=Ubp3ND0VwAdxIv1r4XQ+2g==, tableContent=null), ArticleFig(id=1189594646339641681, tenantId=1146029695717560320, journalId=1146119989267898375, articleId=1189584025527247092, language=CN, label=图14, caption=
鹅颈削弱后的等效塑性应变云图, figureFileSmall=u//GTYAvXgz4sN98IDbVkA==, figureFileBig=Ubp3ND0VwAdxIv1r4XQ+2g==, tableContent=null), ArticleFig(id=1189594646448693586, tenantId=1146029695717560320, journalId=1146119989267898375, articleId=1189584025527247092, language=EN, label=Tab.1, caption=
Material parameters
, figureFileSmall=null, figureFileBig=null, tableContent=
| 部件 | 密度/ (kg·m-3) | 弹性模量/GPa | 泊松比 | 屈服极限/MPa | 切线模量/GPa |
| 鹅颈 | 2 700 | 70 | 0.3 | 410 | 0.3 |
| 舱门 | 7 800 | 210 | 0.3 | — | — |
), ArticleFig(id=1189594646549356883, tenantId=1146029695717560320, journalId=1146119989267898375, articleId=1189584025527247092, language=CN, label=表1, caption=
材料模型参数
, figureFileSmall=null, figureFileBig=null, tableContent=
| 部件 | 密度/ (kg·m-3) | 弹性模量/GPa | 泊松比 | 屈服极限/MPa | 切线模量/GPa |
| 鹅颈 | 2 700 | 70 | 0.3 | 410 | 0.3 |
| 舱门 | 7 800 | 210 | 0.3 | — | — |
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