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Analysis / R&D and engineering

Compare tolerance stack scenarios

Compare engineering tolerance stacks in Proforma. Inspect worst-case contributions, alternative assumptions and model limitations before design review.

A starting point for

Design engineer

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Your starting prompt.

Compare tolerance stack scenarios for [assembly] using [dimension ranges] and [geometry]. Start with a transparent worst-case calculation and show alternative assumptions only when independence or distributions are supported. Present contributions, units and sensitivity to the largest tolerances. Keep the mathematical model inspectable and list omitted effects. Do not treat a simplified stack as manufacturing validation, safety certification or permission to release the design.

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Method and review

Keep the assumptions visible.

Specify units, calibration, baselines and the experimental method. Check measurement quality and uncertainty before extending a result beyond the observed conditions.

For this task, check

The design owner must assess correlation, fit, safety factors and model adequacy before changing specifications.

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Before you begin

  • Explicit geometry and tolerance assumptions
  • Engineering review of the chosen calculation method

Work with permitted files or queryable data. Verify the result against the original records.

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Make it your investigation.

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