环境试验仿真中两类集成可视化技术

Integrated Visualization Methods in Environment Test Simulation

针对环境试验仿真中,不同数据源的集成可视化,研究了两种集成可视化方法:一种是将试验测量数据和有限元计算数据进行可视化的方法,该方法以有限的测点数据为标准,将其它位置的物理量映射到有限元模型上,并进行三维可视化,不但能更形象地显示试验结果,而且增强了显示的整体性和相关性,改变了只能以二维曲线显示试验测试结果的可视化方式.另一种方法基于TSP树,采用3D纹理切片和几何透明片断的融合绘制,实现数值模拟计算结果与试验环境几何样机的可视化,改变了只能孤立地观察计算结果的可视化方式.研究结果表明,这两种集成可视化方法可使工程人员能站在全局观点观察数据,从而为环境试验仿真提供了有效的辅助分析工具.

Integrated visualization of various data collected from different resources in ETS （environment test simulation）gives more insight into their respective relations and patterns. Two kinds of integrated visualization methods are studied to give this capability. One method is to integrate the FEA result and the test data together, it uses position matching and mapping method to generate node data on basis of test data and FEA results, and plots the generated data on 3D FEA model, which changes the 2D waveform for test data visualization, not only gives better visual effect, but also increases the relativity and integrity of visualization. The other method is to integrate numerical simulation data and environment model together, which changes the way of visualizing the isolated simulation results, 3D slice texture based on TSP-tree and geometry slabs sorting are used to hybrid render the integrated results. These methods give global contexts about the data and provide an effective auxiliary analysis tools for the ETS.