Altair RISE

Since your question on optimization constraint,we would like to back up and understand how the variables could be defined in this problem.It would be nice if you could share .hstx file of Hyperstudy.

If possible explain more info about your use case.

Altair Forum User

Unable to find an attachment - read this blog

Altair Forum User

Please find attached file in message above.

Rahul Rajan_21763

Thanks for sharing files.We will get back to you soon.

Please note: If you are a commercial customer, you can also contact your local support @ http://www.altairhyp...ortProduct.aspx

Rahul Rajan_21763

PFB solution from HyperStudy expert.

The user will have to calculate the percentages manually. He could either create an explicit calculation in the expression builder:

((m_1_varname_1 == 90) + (m_1_varname_2 == 90) + (m_1_varname_3 == 90) + … )/32

Or he could register a function that does the calculation for him. In HyperMath, this would work:

function percentageMatches(vector,target)

y=vector==target

z=Sum(y)/Length(vector)

return z

end

Then the expression builder would be something like

percentageMatches({m_1_varname_1, m_1_varname_2, m_1_varname_3,…}90)

Faisal

PFB solution from HyperStudy expert.

The user will have to calculate the percentages manually. He could either create an explicit calculation in the expression builder:

((m_1_varname_1 == 90) + (m_1_varname_2 == 90) + (m_1_varname_3 == 90) + … )/32

Or he could register a function that does the calculation for him. In HyperMath, this would work:

function percentageMatches(vector,target)

                y=vector==target

                z=Sum(y)/Length(vector)

                return z

end

Then the expression builder would be something like

percentageMatches({m_1_varname_1, m_1_varname_2, m_1_varname_3,…}90)

Hello,

Could you please explain me, what is PLYPCT i know the basic definition but how to use or what percentage should i give to my plies?

Thank you

SFM

Adriano_Koga

Hi /profile/97432-faisal/?do=hovercard' data-mentionid='97432' href='<___base_url___>/profile/97432-faisal/' rel=''>@Faisal

PlyPCT is an OptiStruct card.

This simply constraints the percentage of a particular ply/direction in a laminate, avoiding it to 'overtake' the whole laminate.

There's no 'right' value for this. It should be be chosen according to your design requirements. You could prescribe the maximum absolute thickness as well. Again, it is a design choose.

For percentage, you would work probably with something between 20 yo 40% but it really depends on your laminate and requirements.

In general i use it to avoid a too large thickness for some orientation.

Faisal

Hi /profile/97432-faisal/?do=hovercard' data-mentionid='97432' href='<___base_url___>/profile/97432-faisal/' rel=''>@Faisal

PlyPCT is an OptiStruct card.

This simply constraints the percentage of a particular ply/direction in a laminate, avoiding it to 'overtake' the whole laminate.

There's no 'right' value for this. It should be be chosen according to your design requirements. You could prescribe the maximum absolute thickness as well. Again, it is a design choose.

For percentage, you would work probably with something between 20 yo 40% but it really depends on your laminate and requirements.

In general i use it to avoid a too large thickness for some orientation.

Hello,

Thanks for your reply, after i am doing shuffle optimization my plies ID and plies name are interchnanging with other plies, since i am using 3 different material and its very difficult to check each plies property because in my model i am having more than hundred plies. Please let me know if you have any idea.

Thanks

Adriano_Koga

This is strange. Have you requested the output,html,yes?

It gives you a visual output of the shuffled result so that you could double check the final stacking.

Faisal

This is strange. Have you requested the output,html,yes?

It gives you a visual output of the shuffled result so that you could double check the final stacking.

Since I am using three materials and it is very difficult to cross check each plies. Do you have any solution for this? Also i have cross checked with .prop file and the ply IDs are different.

Thanks