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Recent content by homutow

  1. homutow

    Flexural vs tensile strength for plastics analysis?

    Jerzy, Thank you very much for the answer, I really appreciate:) Homutow
  2. homutow

    Flexural vs tensile strength for plastics analysis?

    Hello Jerzy, Thanks for answer. The material I use seems not to follow the rules of 2/3. Tensile Ultimate is min 80 MPa and flexural ultimate min 180 MPa. I am wondering why the flexural strength is so important if tensile strength is usually used? As I wrote previously I am new in plastics:)
  3. homutow

    Flexural vs tensile strength for plastics analysis?

    I am doing FE analysis of the plastic part (similar to Bakellite). I have two material properties: tensile strength and flexural strength. I am little confused which value to use as a criteria for the design (I use first principal stress)? Till now I have used flexural strength because stress...
  4. homutow

    Excessive contact stress under the bolt head

    Thanks desertfox for the answer.
  5. homutow

    Excessive contact stress under the bolt head

    I am calculating a design where plastic cover (material similar to Bakellite) is clamped with a bolt. I have calcualted the pressure under the bolt head and it was about three times the compressive stregth. I would like to ask if anybody had experience with too high contact stresses, what are...
  6. homutow

    Solder joints, thermal fatigue analysis

    Hi, Recently I got a task to perform thermal fatigue analysis of solder joints. Till now I had nothing to do with such objects. Does anybody perform such a task?? I can prepare the FEA model but there are many questions: - what would be the material model? - Is there any approach to calculate...

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