波纹蒙皮结构能够有效的缓解机翼结构在高温下产生的热应力,本文对两种加强槽形式(圆弧形与直角形加强槽)的钛合金波纹蒙皮结构热应力进行了分析,研究了加强槽半径(宽度),加强槽深度对结构支座端和加强槽中面处应力的影响.研究结果表明,(1)加强槽能够有效的将结构应力汇集至槽内,使得结构其他区域应力水平下降.(2)与固支边界条件相比,简支边界条件下结构整体应力水平更小.(3)存在一个加强槽半径(宽度)和深度的临界取值区域,当加强槽半径(宽度)和深度在该区域内,结构支座端和对称面上的应力随加强槽半径(宽度)和深度增加而减小,从而提高结构的承载能力.(4)相同的加强槽半径(宽度)和深度时,直角形型加强槽的整体应力水平较小.
参考文献
[1] | Jenkins J M, Quinn R D.A Historical Perspective of the YF-12A Thermal Loads and Structures Program[R].California.National Aeronautics Space Administration.1996:1-31.,1996. |
[2] | Merlin P W.Design and Development of the Blackbird:Challenges and Lessons Learned[R].Florida.AIAA.2009:1-38.,2009. |
[3] | Jenkins J M.The Effect of Thermal Stresses on the Integrity of Three Built-up Aircraft Structures[R].California.National Aeronautics Space Administration.1980:1-57.,1980. |
[4] | Taylor A H, Jackson L R, Cerro J A,et al.Analytical comparison of two wing structures for Mach 5 cruise airplanes[J].Journal of Aircraft, 1984, 21 (4):272-277.,1984. |
[5] | Sudmeijer K J.Technology Development for Metallic Hot Structures in Aerodynamic Control Surfaces of Reusable Launchers[C].Orleans, France:AIAA/AAAF 11th International Space Planes and Hypersonic Systems and Technology.29-4 October 2002.,2002. |
[6] | 赵惠元 .高速机翼蒙皮的热弹性稳定问题[J].力学学报,1960,4(3):221-226.,1960. |
[7] | ZHOU Chun-hua,WANG Bang-feng,LIU Zhao,MOU Chang-wei.Tensile Deformation Properties of Corrugated Style Fiber Reinforced Composite Skin for a Morphing Wing[J].国际设备工程与管理(英文版),2011(01):41-46. |
[8] | 周春华 .波纹型复合材料蒙皮基体性能测试及仿真分析[D].南京航空航天大学,2012. |
[9] | 王莹.工艺管道热补偿的研究[J].辽宁化工,2010(02):207-209. |
[10] | 高重建.蒸汽供热管道中波纹管补偿器的设计计算[J].煤气与热力,2006(05):61-65. |
[11] | 刘世杰 .压力管道热膨胀的简化计算及其快速校核[J].辽阳石油化工高等专科学校学报,2000,16(4):37-39.,2000. |
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