# Discrepancy in Element Stiffness Matrix Output using Substructure Approach

**URL:** <https://calculix.discourse.group/t/discrepancy-in-element-stiffness-matrix-output-using-substructure-approach/2007>\
**Category:** Uncategorized\
**Created:** [January 4, 2024, 6:00am UTC](https://calculix.discourse.group/t/discrepancy-in-element-stiffness-matrix-output-using-substructure-approach/2007 "2024-01-04T06:00:42Z")\
**Posts on this page:** 1\
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**Author:** ![Calc\_em](https://avatars.discourse-cdn.com/v4/letter/c/43a26b/32.png) [@Calc\_em](https://calculix.discourse.group/u/Calc_em)\
**Post date:** [January 4, 2024, 8:56am UTC](https://calculix.discourse.group/t/discrepancy-in-element-stiffness-matrix-output-using-substructure-approach/2007/4 "2024-01-04T08:56:04Z")

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Try also extracting the stiffness matrix from CalculiX using `*FREQUENCY, SOLVER=MATRIXSTORAGE` as discussed here: [To output element stiffness matrix to a result file](https://calculix.discourse.group/t/to-output-element-stiffness-matrix-to-a-result-file/1988)

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