An accurate nonlinear finite element analysis and test correlation of a stiffened composite wing panel
An accurate nonlinear finite element analysis and test correlation of a stiffened composite wing panel
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加筋复合材料机翼板的精确非线性有限元分析和测试关联
DOI：
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发表时间：
1991
期刊：
影响因子：
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通讯作者：
S. L. Mccleary
中科院分区：
文献类型：
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作者：
D. Davis;T. Krishnamurthy;W. Stroud;S. L. Mccleary
国家的最先进的非线性有限元分析技术进行评估，将其应用到一个现实的飞机结构部件。选择V-22倾转旋翼机的机翼壁板是因为它是一种典型的现代飞机结构部件，有实验数据可供比较。根据蓝图和图纸，生成了一个非常详细的有限元模型，其中包含2284个9节点假定自然坐标应变单元。一种新的解决方案的战略，占几何非线性，通过使用共转单元参考框架和非线性应变-位移关系来分析这个详细的模型。使用相同的有限元模型的线性分析的结果，以说明的优势和成本的非线性分析相比，更传统的线性分析。
State-of-the-art nonlinear finite element analysis techniques are evaluated by applying them to a realistic aircraft structural component. A wing panel from the V-22 tiltrotor aircraft is chosen because it is a typical modern aircraft structural component for which there is experimental data for comparison of results. From blueprints and drawings, a very detailed finite element model containing 2284 9-node Assumed Natural-Coordinate Strain elements was generated. A novel solution strategy which accounts for geometric nonlinearity through the use of corotating element reference frames and nonlinear strain-displacement relations is used to analyze this detailed model. Results from linear analyses using the same finite element model are presented in order to illustrate the advantages and costs of the nonlinear analysis as compared with the more traditional linear analysis.