关于数值模拟与工程监测 [复制链接]

不知大家如何看待数值模拟在工程中应用？其模拟的结果与实际监测成果能吻合到什么程度？可信度有多高？
因为本人对数值模拟知之甚少，因此前来请教

互相验证

数值模拟作为比较有效和直观的一种计算机方法技术，
监测则直接反映工程结构的变化

二者互相验证和解释

有一些在实际工程很难测到的,或是要花费很多经费的,可以用数值模拟探索一下.

定性分析还是可以的

定量分析，目前还不现实，强制吻合需要高超的“调参数和本构模型的知识”

这东西只能检验设计值，检验本构关系，对以后设计提供支持，但实际能用到的了是很少的。目前大多以检查安全状况为主，可以说数值模拟是呼声高，应用少，实际效果不大。只是做为写报告、论文的材料而已。

we all know that the the numbers from the numerical anlaysis may not be so reliable. it is true that it provides some reference information. But fully reling on it aslo causes problem. currenly I doing a deep excavation project just next to the existing MRT station. the requirement for this deep excavavation is the movement on the MRT station should be less than 15mm. It is a very small movement in consideration of such 40m deep excavation. You have to provide the evidence to show the movement is really less than 15mm, which of course can be provided only by numerical analysis. 

I believe the relationship between monitoring and numerical analysis should be interactive.
First, you provide the numerical analysis based on the available SI data and numerical models.
Second, site monitoring should provide necessary information to support or verify the numerical analysis results. the effect of the site monitoring should be two fold. When the site movmenet is larger than the predication, it looks like the site conditions is worse than the assumption in the numerical models. we should reexamine our numerical model to see anything wrong with parameters. we can adjust the parameters when necessary. we can even propose more site invesitgation works to verify the site conditions. On site, we also have to have contigency plan to tack the unpredicted situation.

when the site movement is much less than the prediction, it may help to cut some construction materials to save some cost.

感谢各位的回复，期待更精彩的发言

大体规律能体现,但数值并不会很接近

本构关系是关键，搞得明白，才能做得准确计算，要不数值计算也不会这么热了！！

就想问下数值模拟监测都用什么软件，是说实用，不是理想化的研究软件的.    

好书 谢谢分享