关于ABAQUS+VL的传声问题。

曼联七号

问题是这样的：

问题一：
           利用ABAQUS对结构进行了模态分析，利用了质量归一的方法。然后将结果文件obd文件导入LMS Virtual Lab 采用AML+FEM的方法进行传声损失计算。在提交求教时出现这样的警告：Some nodes have more than one result of the same type for the selected subcase and step.
The extra results were found in 'ODB analysis result'.
  If this is an ASCII file, you could try to introduce a new step or subcase ID for this data set.
Some nodes have more than one result of the same type for the selected subcase and step.
The extra results were found in 'ODB analysis result'.
  If this is an ASCII file, you could try to introduce a new step or subcase ID for this data set.
Some nodes have more than one result of the same type for the selected subcase and step.
The extra results were found in 'ODB analysis result'.

我已经对冲突节点进行了Fix，出现这样的问题，实在不解！！！


问题二：

          虽然提示这样的警告，但是计算可以进行。在计算完成之后，发现传声曲线比起理论以及实际情况，偏高了大概10-20dB。同时出现了很多小的波峰波谷。已经对ABAQUS进行重复检查，应该没什么问题，会不会是应为声学网格的问题。AML层的厚度设置已经单元大小有什么要求吗？？


        求大神解答一下！！！！

曼联七号

求大神啊！

mind1991

空气声还是水声？