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enabled S for CELAS2 and set to 0 for CELAS4 to match MSC#280

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victorkemp merged 1 commit into
MystranSolver:devfrom
victorkemp:celas2_s
Jul 8, 2026
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enabled S for CELAS2 and set to 0 for CELAS4 to match MSC#280
victorkemp merged 1 commit into
MystranSolver:devfrom
victorkemp:celas2_s

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This PR adds field 9 - stress coefficient for CELAS2 and makes the default 0.0 instead of 1.0 to match MSC.

It also set the stress coefficient for CELAS4 to zero instead of 1.0 for CELAS4, also to match MSC which has no stress for CELAS4.

The 1.0 defaults were probably there because Mystran previously couldn't calculate CELAS for without a non-zero stress, but now they're not needed and wrong as defaults.

For the manual, add field 9 to the CELAS2 section, the same as field 5 of PELAS:

  • Field: S
  • Contents: Stress recovery coefficient
  • Type: Real
  • Default: 0.0

@victorkemp
victorkemp merged commit ac44e0f into MystranSolver:dev Jul 8, 2026
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victorkemp deleted the celas2_s branch July 8, 2026 02:39
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