Why engineering FEA guy alawys put a responsibility waiver note on the FEA report? What did you do for your FEA report? How did you think?

Discussion created by Simon Yang on Jun 28, 2019
Latest reply on Oct 18, 2019 by Christian Chu

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20 years ago, I saw engineering FEA guy always put a note for responsibility waiver, such as

"Do not accept or reject a design based solely on the data presented in this report", etc.

10 years ago, I saw it, engineering guy thought it is okay.

At present, the FEA report I review, the similar note are still there.

what is your opinion?

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6 Replies

Frederick Law Jun 28, 2019 11:29 AM
FEA result based on user/customer input.
Once the report is created, its "obsoleted" with changes in the project.
Also FEA is "based on assumptions".

We need to cover our behind.
Insurance is not cheap.
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- Simon Yang @ Frederick Law on Oct 18, 2019 12:19 PM
  Frederick Law and John Stoltzfus , thank you very much for your reply! Your both are right. I am just thinking:
  In the past, FEA was expensive and there were fewer people to understand and use, so in general, companies or users hire professional companies or people. That is to say, the product or equipment design is done by one person/department/company, and the FEA is done by another person/department/company. Therefore, in order to distinguish the responsibilities, the person/department/company that did the FEA had to write such exemption instructions or terms in the completed FEA report.
  Today FEA has entered the design department of many companies, and many designers have been able to do FEA themselves when they complete or design. Looking forward to the near future, the FEA report is like the usual regular calculation report, and there is no need to write such exemption text or terms.
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  - Frederick Law @ Simon Yang on Oct 18, 2019 12:45 PM
    I think the opposite.
    Easy accessible of FEA make it worse.
    People without training can do lots of damage.
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    - Josh Brady @ Frederick Law on Oct 18, 2019 1:18 PM
      Frederick Law wrote:
      
      I think the opposite.
      Easy accessible of FEA make it worse.
      People without training can do lots of damage.
      1000% agree!
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John Stoltzfus Jun 28, 2019 11:42 AM
In other words....

Someone else does the Engineering for you, you pay them accordingly.... However, you still need to make sure that they know what they are doing, because if you were to build something with an Engineered Flaw, you are still ultimately responsible, you need to know....
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Christian Chu Oct 18, 2019 2:15 PM
To answer your question: we never use FEA results as a proof to valid the design
Without real tests ( thru alpha to beta), we never release a product
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Why engineering FEA guy alawys put a responsibility waiver note on the FEA report? What did you do for your FEA report? How did you think?

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