| 加筋结构中筋条有限元模型研究 |
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| 引用本文： | 焦良.加筋结构中筋条有限元模型研究[J].航空学报,1988,10(12):614-616. |
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| 作者姓名： | 焦良 |
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| 作者单位： | 空军第一航空技术专科学校 |
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| 摘 要： | 本文提出板杆组合元模型在抗拉及板面内抗弯刚度上均达到与实际筋条相等。该模型不仅是检验各种近似解的工具,而且,可在工程上推广应用。 1.筋条抗拉刚度分析 作如下基本假设:（1）平面应力、线弹性Ⅰ型断裂问题;（2）板的中面与筋条铆钉孔所在缘条中面重合,铆钉力在这个面愉;（3）钉孔仪是一点,铆钉力是作用在该点上的一个集中力;（4）忽略筋条与板间的摩擦力。以机翼下壁板为例进行分析(图
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| 收稿时间： | 1987-08-20; |
A 2-DIMENSIONAL FINITE ELEMENT MODEL FOR STIFFENERS IN A STIFFENED STRUCTURE |
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| The First Air -force Aeronautical Engineering College of the Chinese P.L.A Jiao Liang.A 2-DIMENSIONAL FINITE ELEMENT MODEL FOR STIFFENERS IN A STIFFENED STRUCTURE[J].Acta Aeronautica et Astronautica Sinica,1988,10(12):614-616. |
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| Authors: | The First Air -force Aeronautical Engineering College of the Chinese PLA Jiao Liang |
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| Institution: | The First Air -force Aeronautical Engineering College of the Chinese P.L.A Jiao Liang |
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| Abstract: | A 2-dimensional finite element stiffener model is developed,which is equivalent to real stiffeners in stretch and bending stiffness and can be applied to analysis of a stiffened structure with cracks, A sufficient-necpssary condition is put forward, which assures the stiffener model equivalent to real stiffeners in stretch stiffness. A formula for reduced cross section area of a stiffener is presented, which can be used conveniently for different stiffencrs. |
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| Keywords: | finite element model stiffener stress intensity factor |
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