基于NASTRAN节点载荷批处理的编码技术

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。

Coding Technique About Bulk Data Based on the Node Force of NASTRAN Software

The Loads of aircraft involved air load、landing load、mass load and so on. Because of the load case is various,how to input different load cases and different component loads and various loads into inferface bulk data with finite element analysis based on NASTRAN Software is pivotal technique. In this paper, according to special code, air load and landing load and mass load on the node force,which are from ninety serious load case in the design of some aircraft,are input BDF file of NASTRAN software. The analyzing and calculating show the method has more distinguished load and more efficient to input load.