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飞机载荷主要涉及气动载荷、地面载荷、惯性载荷等,载荷的工况也是琐碎繁多,如何将不同工况、不同部件、不同类型的载荷批量化生成利用NASTRAN进行有限元分析的接口文件,是飞机强度分析输入的关键技术。通过特定的载荷编码技术并结合NASTRAN载荷定义的卡片格式,将某型飞机90种严重工况下的气动节点载荷、地面节点载荷、惯性节点载荷按照一定编码批处理地导入NASTRAN的bdf文件中,分析和计算表明该方法具有良好的载荷识别性能和准确性以及较高的载荷输入效率。
Aircraft load mainly involves aerodynamic loads, ground loads, inertial loads, load conditions are trivial, how to batches different conditions, different components, different types of loads generated using NASTRAN finite element analysis of the interface file is the aircraft The key technology of strength analysis input. The load of aerodynamic node, ground node and inertial node under 90 kinds of severe conditions are imported into the NASTRAN bdf file according to a certain encoding batch by a specific load encoding technology and a card format defined by NASTRAN load. Analysis and calculation show that the method has good load identification performance and accuracy and high load input efficiency.