# Homogeneous conditions

**URL:** <https://prepomax.discourse.group/t/homogeneous-conditions/532>\
**Category:** General Questions\
**Created:** [November 10, 2022, 10:09am UTC](https://prepomax.discourse.group/t/homogeneous-conditions/532 "2022-11-10T10:09:06Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![ANYS](https://yyz2.discourse-cdn.com/free1/user_avatar/prepomax.discourse.group/anys/32/7737_2.png) [@ANYS](https://prepomax.discourse.group/u/ANYS)\
**Post date:** [November 10, 2022, 10:09am UTC](https://prepomax.discourse.group/t/homogeneous-conditions/532/1 "2022-11-10T10:09:06Z")

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Manual says:

“Homogeneous conditions should be placed before the ﬁrst \*STEP keyword card”.

¿Is there a specific reason why Prepomax set them inside the step?¿Is that correct?

Thanks, and sorry for asking so much. Many new things.

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**Author:** ![FEAnalyst](https://yyz2.discourse-cdn.com/free1/user_avatar/prepomax.discourse.group/feanalyst/32/688_2.png) [@FEAnalyst](https://prepomax.discourse.group/u/FEAnalyst)\
**Post date:** [November 10, 2022, 10:14am UTC](https://prepomax.discourse.group/t/homogeneous-conditions/532/2 "2022-11-10T10:14:22Z")

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In Abaqus there’s a default Initial step for this. BCs in that step (or generally speaking before the first \*STEP keyword) can only be fixed (no prescribed displacements). Then they are carried to the following steps and can be modified there. But in practice it’s pretty much the same as defining fixed BCs in the first step.

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**Author:** ![ANYS](https://yyz2.discourse-cdn.com/free1/user_avatar/prepomax.discourse.group/anys/32/7737_2.png) [@ANYS](https://prepomax.discourse.group/u/ANYS)\
**Post date:** [November 10, 2022, 10:46am UTC](https://prepomax.discourse.group/t/homogeneous-conditions/532/3 "2022-11-10T10:46:30Z")

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Ok,

My next question is already answered in the forum:

# [BCs and Load Op=New vs continuation](https://prepomax.discourse.group/t/bcs-and-load-op-new-vs-continuation/100)

Thanks again.

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**Author:** ![ANYS](https://yyz2.discourse-cdn.com/free1/user_avatar/prepomax.discourse.group/anys/32/7737_2.png) [@ANYS](https://prepomax.discourse.group/u/ANYS)\
**Post date:** [July 31, 2024, 8:38pm UTC](https://prepomax.discourse.group/t/homogeneous-conditions/532/4 "2024-07-31T20:38:56Z")

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I suspect it makes a difference. I’, not able to get the same result as a file computed with mecway. It’s one of the main differences if not the only.  
OP card could be responsible too.
