温度试验可视化系统的关键技术研究

Key Technology Research of Temperature Test Visualization System

随着数值模拟精度的不断提高以及温度试验测量手段的不断丰富,传统的以一组2维曲线显示多通道采集数据的试验可视化方式无法满足需求,为此提出了一种新的温度试验可视化系统,该系统采用数值模拟技术和试验相结合的方法来进行温度试验的分析和评估,这就为提高试验数据的显示度开辟了新途径。该系统将随时间变化的试验数据,以彩色云图方式动态地显示在有限元模型上,并通过数值模拟结果和试验数据的映射来获得无法布置测点的位置的温度分布情况;同时针对试验测量数据3维可视化的特点,设计了系统的可视化数据结构,并实现了剖切探测、模型比对和云图绘制。该系统的构造方法还可以推广应用到静力、离心等其他环境试验数据3维可视化中。

With the improvement of numerical simulation＇ s precision and temperature test＇ s measure methods, better test visualization technique is required. This system integrates numerical simulation and test together, to for visualiz test data, which is a new way for improving test analysis and evaluation. Test data is typically collected in a waveform data type while simulation typically presents results in 3D geometry. In addition, test data locations are sparse compared to relatively dense FEA mesh results. This system uses position matching and mapping method to generate node data on basis of test data and FEA results, and plots generated data on FEA model in color cloud picture mode, thus makes it possible for visualizing all remaining nodes which can＇ t be collected by test, In the system, specific data structure and interactive method such as cutting, probing and comparison are designed, The construction method of this visualization system can also be applied in statics test and acentric test,