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《China Mechanical Engineering》 2016-19
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Bionic Investigation on Multiple Intersecting Egg-shaped Pressure Hulls

Zhang Jian;Zuo Xinlong;Wang Weibo;Tang Wenxian;Jiangsu University of Science and Technology;Chinese Ship Scientific Research Center;  
Bionic design of multiple intersecting egg-shaped pressure hulls was carried out based on goose egg shell.Firstly,egg-shaped function was established according to a series of biological experiments of egg shells.Then,multiple intersecting egg-shaped pressure hulls in deep sea were designed.Numerical models with 2,3,4,5,6eggshells were established.Critical buckling loads,yield loads and buoyancy factors of these hulls were studied.Finally,effects of the main geometric parameters on the performances of the multiple intersecting egg-shaped pressure hulls were analyzed using orthogonal experimental design.The results show that Kitching function is the best egg-shaped function describing goose egg meridian.The length-to-eccentricity ratio is as 45,and the egg shape index is as0.69.The critical buckling loads of the egg-shaped pressure hulls are larger than yield loads,indicating that strength is the main factor of the structural design.The number of eggshells has little influence on the yield loads and buoyancy factors,while the shell thickness has a great influence on them.The geometrical parameters of the rib have little influence on the buoyancy factors but great on the yield loads.
【Fund】: 国家自然科学基金资助项目(51205173);; 江苏省自然科学基金资助项目(BK20150469);; 江苏科技大学研究生科研创新计划资助项目(YCX15s-05)
【CateGory Index】: U674.941;TB17
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