1. Key Aviation Scientific and Technological Laboratory of High-Speed Hydrodynamic, Hubei, Jingmen, 448035, China
2. China Special Vehicle Research Institute, Hubei，Jingmen, 448035, China
3. China Aviation Industry General Aircraft Co., Ltd, Guangdong, Zhuhai 100191, China
Abstract：The traditional seaplane water load test basically adopts the rigid ratio model, which does not take into account the influence of elastic deformation and scale ratio on load.A large amphibious aircraft cabin section was used to carry out a water load test and a test plan was designed for large test pieces.Different weight states and water-entry speeds were tested.Changes of acceleration peaks, the history and distribution of pressure characteristics were analyzed.The theoretical and experimental values of accelerations at different half widths of wetting were compared.The results show that the secondary peak phenomenon appears in the partial pressure curve; the acceleration peak increases nonlinearly with the weight and the water-entry velocity; as the weight increases, the half width of wetting corresponding to the acceleration peak increases, and the velocity influences it mildly; The Von-Karman theory is closer to the experimental result than the Wagner theory; the smaller the water-entry velocity, the greater the influence of gravity on the water entry of the structure.
孙丰1,2，魏飞1,2，吴彬1,2，张家旭1,2，褚林塘1,3. 大型水陆两栖飞机舱段入水冲击实验研究[J]. 振动与冲击, 2019, 38(12): 39-43.
SUN Feng1, 2, WEI Fei1, 2,WU Bin1, 2, ZHANG Jiaxu1, 2,CHU Lintang1, 3. An experimental study on water impact of large amphibious aircrafts. JOURNAL OF VIBRATION AND SHOCK, 2019, 38(12): 39-43.
[1] 骆寒冰,徐慧,余建星等.舰船砰击载荷及结构动响应研究综述[J].船舶力学,2010,14(4):439-450.
LUO Han-bing, XU Hui, YU Jian-xi et al. Review of the state of the art of dynamic responses induced by slamming loads on ship structures[J]. Journal of Ship Mechanics ,2010,14(4):439-450.
[2] Chuang, S.-L.. Slamming of rigid wedge-shaped bodies with various dead-rise angles[R]. Department of the Navy, 1966.
[3]Ochi M K, Motter L E．Prediction of slamming characteristics and hull responses for ship design[J]．Transactions SNAME,1973,81:144-177．
[4] Ei-Mahdi Yettou, Alain Desrochers, Yvan Champoux. Experimental study on the water impact of a symmetrical wedge [J].Fluid Dynamic Research, 2006, 38, 47-66.
[5]Aboulghit Malki Alaoui, Alain Nême. Slamming Load during Vertical Water Entry at Constant Velocity [C]. Proceedings of the Twenty-second (2012) International Offshore and Polar Engineering Conference, Rhodes, Greece,2012,801-806
[6]Panciroli, R, Abrate, S et al. Hydroelasticity in water-entry problems: Comparison between experimental and SPH results. Composite Structures, 2012,94:532–539.
[7] 莫立新，王辉，蒋彩霞等. 变刚度楔形体板架落体砰击试验研究[J].船舶力学,2011,15(4): 394-401.
MO Li-xin, WANG Hui, JIANG Cai-xia. Study on dropping test of wedge grillages with various types of stiffness [J]. Journal of Ship Mechanics, 2011,15(4): 394-401.
[8] 孙辉，卢炽华，何友生.二维楔形体冲击入水时的流固耦合响应的试验研究[J].水动力学研究与进展, 2003, 18(1): 104-109
SUN Hui, LU Zhi2hua, HE You2sheng. Experimental research on the fluid-structure interaction in water entry of 2D elastic wedge [J]. JOURNAL OF HYDRODYNAMI -CS, 2003, 18(1): 104-109
[9]王明振,褚林塘,吴彬等.水陆两栖飞机典型横截面入水撞击实验研究[J].爆炸与冲击,2016, 36(3):313-318
WANG Mingzhen, CHU Lintang, WU Bin et al. Experimental study on the water impact of the typical cross section for amphibious seaplane[J]. EXPLOSION AND SHOCK WAVES,2016,36(3): 313-318
[10]褚林塘,孙丰,廉滋鼎.水陆两栖飞机船体着水载荷数值与试验分析[J].振动与冲击,2016,35 (15):211-215.
[11]CHU Lintang, SUN Feng, LIAN Ziding. Numerical and experimental analysis of the water load of amphibious aircraft hull[J]. JOURNAL OF VIBRATION AND SHOCK,2016,35 (15):211-215.
[12]Xu,G.D., Duan,W.Y., Wu,G.X 2010 Simulation of water entry of a wedge through free fall in three degrees of freedom, Proceeding of Royal Society A 466, 2219-2239.
Xu, G.D., Duan, W.Y., Wu, G.X., 2008, Numerical simulation of oblique water entry of an asymmetrical wedge, Ocean Engineering. 35, 1597-1603.
[13]戴仰山,沈进威,宋竟正.船舶波浪载荷[M].北京:国防工业出版社,2007:120-121.
SHIP WAVE LOADS [M]. BeiJing: National Defense Industry Press,2007:120-121.
