Questions for applying MATT4
Altair EmployeeOn the attached file
I have the same results between using MATT4 card and not using it(Just MAT4)
what's wrong with it?
Answers
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Hi,
In your model i see loadcollector for constraints but no DOF is turned on.Even i dont see any load in your model.
Please define appropriate loads & boundary condition then run.If possible refer optistruct online tutorial.
Regards
Rahul R
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I have a temperature constraint of 298K
also, i made a heat flux load
but still there's no differences in result between checking and unchecking the matt4 card
+ive attached my latest .hm file
<?xml version="1.0" encoding="UTF-8"?>
<?xml version="1.0" encoding="UTF-8"?>
<?xml version="1.0" encoding="UTF-8"?>
<?xml version="1.0" encoding="UTF-8"?>
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Hi,
Can you share the model?
The quantities defined on the MAT4 bulk data entry are multiplied by the tabular function referenced by the MATT4 bulk data card to generate the corresponding material properties. Since the K is value is very less there is no much change in the results.
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Here's my latest model
i've changed all my mat4 datas into 1 in order to use only matt4 datas
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Hi,
How come thermal conductivity for three different material is same?I feel unit is not consistent for thermal conductivity(Even in your first shared file i saw different values)
and enter H Free convection heat transfer coefficient value and Run.
Regards
Rahul R
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the units are made up of W/mmK
for instance, StainlessSteel is about 16W/mk (@ https://en.wikipedia.org/wiki/List_of_thermal_conductivities )
so ive wrote the mat4 value into 0.016 (W/mmK)+copper = 0.39 W/mmK & G10 fiberglass = 0.0003W/mmK
Those seems to be correct, and ive typed in h coefficient values but no differences still....
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-Solved-
I had to use the nonlinear analysis not the linear ones.
Check this tutorial for someone who has similar problems
& Thanks to Rahul & Prakash for your help
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