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蜻蜓翅膀結(jié)構(gòu)剛度有限元分析
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吉林省科技廳重點項目(20080246)


Finite Element Analysis of Dragonfly Wing Structural Stiffness
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    摘要:

    以蜻蜓翅膀為研究對象,應(yīng)用CAD和有限元分析軟件ANSYS建立蜻蜓翅膀的有限元模型,通過靜力學(xué)分析確定:蜻蜓翅膀脈絡(luò)結(jié)構(gòu)中主脈為主承力結(jié)構(gòu),主脈與次脈協(xié)調(diào)作用,使整體結(jié)構(gòu)更為合理。根據(jù)蜻蜓翅膀起皺結(jié)構(gòu)的特點,建立四邊形、交錯四邊形兩種褶皺結(jié)構(gòu)網(wǎng)格模型,分析不同載荷作用下的力學(xué)性能。結(jié)果表明:相同均布載荷作用下,起皺的高度越大,結(jié)構(gòu)變形量越?。辉谙嗤钠鸢櫢叨认?,隨著載荷的增加,變形量也隨之增加,但起皺高度越大,隨載荷增大的變形量越小,同時四邊形網(wǎng)格結(jié)構(gòu)的剛度稍大于交錯四邊形網(wǎng)格結(jié)構(gòu);在相同載荷作用下,有膜網(wǎng)格結(jié)構(gòu)的變形量總是小于無膜的網(wǎng)格結(jié)構(gòu)。

    Abstract:

    The dragonfly wings were taken as the study objects, CAD and finite element analysis software ANSYS were applied to establish the finite element model of dragonfly wings. Through static analysis, the main vein structure was determined as load-bearing structure in dragonfly wings, the main vein and secondary veins coordinating so as to make the overall structure more reasonable. According to the characteristics of dragonfly wings wrinkled structure, the mesh model of rectangular and staggered quadrilateral fold structure was established, different mechanical properties under load were analyzed. The results showed that under the same uniform load, the greater the height of wrinkling was, the smaller structural deformation, and the greater structural stiffness would be. The analysis of quadrilateral mesh (no membrane) model in a different uniform deformation under load of the trend can be seen in the same wrinkle height, as the load increased, the deformation also increased, but as the wrinkle height increased, and with the smaller amount of deformation of the load increased, the quadrilateral mesh stiffness of the structure became slightly larger than staggered quadrilateral mesh structure. Under the same load, the deformation of a membrane mesh structure was always less than no membrane mesh structure.

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史曉君,于海業(yè).蜻蜓翅膀結(jié)構(gòu)剛度有限元分析[J].農(nóng)業(yè)機械學(xué)報,2012,43(1):224-229,223. Shi Xiaojun, Yu Haiye. Finite Element Analysis of Dragonfly Wing Structural Stiffness[J]. Transactions of the Chinese Society for Agricultural Machinery,2012,43(1):224-229,223.

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  • 在線發(fā)布日期: 2012-01-12
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