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| Can Von mises stresses be only positive |  | ||
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| Posted by: Engineer fahim ® 01/17/2010, 08:45:22 Author Profile eMail author Edit |
Sir,
I am using coventorware software for FEA analysis and i in my structure a part is behaving like a contilever beam ,a force of 300uN is applied at the tip of cantilever while other end of beam is fixed , it give me should give me tensile stesses at upper part and compressive at bottom side but it is giving me all tensile stresses at both side these are Von-mises stresses ,anybody who can give the reason for this kindly advise me? |
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| Re: Can Von mises stresses be only positive | | ||
| Re: Can Von mises stresses be only positive -- Engineer fahim | Post Reply | Top of thread | Forum |
| Posted by: inginer ® 02/10/2010, 18:52:17 Author Profile eMail author Edit |
be very carefull with the input(coordonates and direction of the force) |
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| Re: Can Von mises stresses be only positive | | ||
| Re: Can Von mises stresses be only positive -- Engineer fahim | Post Reply | Top of thread | Forum |
| Posted by: jem.cadd ® 01/27/2010, 11:21:21 Author Profile eMail author Edit |
i do not have experience with coventorware. von mises stress is a non-negative, scalar value. it is commonly used because the structural safety of elastoplastic materials like steel is well described by von mises stress magnitude. the ultimate safety factor can be calculated by dividing the von mises stress by the ultimate stress of your material |
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