KeyError: EIGENVALUE

抱歉，我之前给出的代码可能存在问题。如果在提取振型数据时出现 `KeyError: EIGENVALUE` 错误，可能是因为你的结果数据中没有名为 `EIGENVALUE` 的字段输出。

请确保你的模态分析结果中存在名为 `EIGENVALUE` 的字段输出。你可以在 Abaqus CAE 中确认模态分析的结果输出是否包含了 `EIGENVALUE` 字段。

如果你确认模态分析的结果输出中确实没有 `EIGENVALUE` 字段，你可以尝试检查一下是否有其他字段可以提取振型数据，或者重新运行模态分析以确保正确的结果输出。

如果问题仍然存在，请提供更多的代码和错误信息，以便我能更好地帮助你解决问题。

相关问题

RuntimeError: inverse: LAPACK library not found in compilation

This error message indicates that the LAPACK library is not installed on your system or it is not included in the compilation process. LAPACK (Linear Algebra PACKage) is a library of numerical linear algebra subroutines used for solving systems of simultaneous linear equations, least-squares solutions of linear systems, eigenvalue problems, and singular value problems.

To resolve this error, you need to install the LAPACK library on your system or include it in the compilation process. The steps for installing LAPACK may vary depending on your operating system and the package manager you are using. Here are some general steps to install LAPACK:

1. Go to the LAPACK website (http://www.netlib.org/lapack/) and download the latest version of the library.

2. Extract the downloaded file to a directory on your system.

3. Open a terminal window and navigate to the directory where you extracted the LAPACK files.

4. Run the following commands to configure and build the library:

./configure
make

5. If the build process completes successfully, run the following command to install the library:

make install

6. Alternatively, you can include the LAPACK library in the compilation process by adding the following linker flags to your compiler command:

-llapack -lblas

Make sure you have the LAPACK library installed in the correct location and that your compiler can find it.

fatal error: arpack.h: No such file or directory

This error message indicates that the compiler is unable to locate the header file "arpack.h". This header file is typically used in programs that use the ARPACK library for solving large-scale eigenvalue problems.

To resolve this issue, you need to ensure that the ARPACK library is properly installed on your system and that the necessary header files are included in the compiler's search path.

Here are some steps you can take to troubleshoot this error:

1. Check that the ARPACK library is installed on your system. You can do this by searching for the library files (e.g. libarpack.so) in your system's library directories (e.g. /usr/lib).

2. If the library is not installed, you can download it from the ARPACK website (http://www.caam.rice.edu/software/ARPACK/) and install it on your system.

3. If the library is installed, check that the header file "arpack.h" is included in the library's installation directory. This file should typically be located in a directory named "include" within the library's installation directory.

4. If the header file is not in the library's installation directory, check that it is installed on your system. You can do this by searching for the file using your system's file search utility.

5. Once you have located the header file, you need to add its directory to the compiler's search path. This can be done by adding the directory to the INCLUDE environment variable or by adding the directory to the compiler's command line options using the -I flag.

By following these steps, you should be able to resolve the "arpack.h: No such file or directory" error and successfully compile your program.