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吕付星. 基于部件包围盒的飞机几何描述算法研究[J]. 科学技术与工程, 2011, (3): .
lvfuxing.Algorithm Study on Geometric Description of Aircraft for Vulnerability Assessment Based on the bounding box of components[J].Science Technology and Engineering,2011,(3):.
基于部件包围盒的飞机几何描述算法研究
Algorithm Study on Geometric Description of Aircraft for Vulnerability Assessment Based on the bounding box of components
投稿时间:2010-10-20  修订日期:2010-11-07
DOI:
中文关键词:  易损性,包围盒,几何描述,射击线,计算效率
英文关键词:vulnerability, bounding box, geometric description, shot line, calculation efficiency
基金项目:西北工业大学横向课题
  
作者单位
吕付星 西北工业大学
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中文摘要:
      部件包围盒是包围该部件的外接长方体。平面射击线扫描法在飞机易损性评估中用于对飞机进行几何描述,包括飞机(部件)暴露面积、重叠面积的计算与部件间遮挡关系的确定等。缩小射击线网格的大小可以减少几何描述的误差,但增加了计算机的计算时间。基于该事实,提出了一种基于部件包围盒的平面射击线扫描法,并编制了计算机程序,进行算例验证。算例表明,该方法易于实现,而且能够在保证飞机几何描述的精度的同时,提高计算效率。
英文摘要:
      The bounding box is the external cuboid surrounding the components. Plane shot line scanning method is use on geometric description of aircraft for vuluerability assessment. The geometric description data include the presented area and the overlapping area of aircraft(components) and the components overlap. Narrowing the size of mesh can reduce the error, but the computer time of geometric description increased. Based on this fact, plane shot line scanning method based on the bounding box of components is proposed. Int the end, a numerical example is given. The result shows that the method is feasible and can guarantee the accuracy of the geometric description of aircraft, increase calculation efficiency.
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