Problem of size optimization's desvar
Altair EmployeeI want to ask at this time I do the size optimization
but at the shell property, I defined the T(thickness)=0.8mm
and at the size panel I need to defined the initial value, lower bound and upper bound
I want to ask at here initial value and property thickness are different
so which is the original thickness of my model?
and if my lower bound is 0.1, so it means my model's thickness the lowest is 0.1 mm?
<?xml version="1.0" encoding="UTF-8"?>
Find more posts tagged with
Altair EmployeeAltair Employee /emoticons/default_smile.png' srcset='/emoticons/smile@2x.png 2x' title=':)' width='20'>
Altair EmployeeAltair Employee
sorry at last reply I enter so fast
No problem.. Happy to help /emoticons/default_smile.png' srcset='/emoticons/smile@2x.png 2x' title=':)' width='20'>
Shape functions are defined through DVGRID card and DSHAPE Defines parameters for the generation of free-shape design variables.
Altair Employee
Do you mean the DVGRID card and SHAPE are in here?
<?xml version="1.0" encoding="UTF-8"?>
Can you show me the path of them? Really thanks to you
like ex : Analysis > optimization > free shape ...
Altair EmployeeAltair EmployeeI probably understand, so I choose Analysis > optimization > free shape means DSHAPE
and gridcon is DVFRID
is that right?
<?xml version="1.0" encoding="UTF-8"?>
Altair EmployeeAltair EmployeeAltair EmployeeAltair EmployeeAltair EmployeeAltair EmployeeSize, shape and Free shape?
If you have access to help, you can refer to tutorials
<?xml version="1.0" encoding="UTF-8"?>
Altair EmployeeThanks to your apply @Prakash Pagadala
My question is if today we are using the solver
we have a lot of file to solve. Now we know if we want to solve
we need to set input file to solve, but it can solve one file at one time
I want to know we can solve lots of files just only run one time and it will run lots of files
Altair EmployeeAltair EmployeeAltair Employee
I want to ask
is the free size optimization need to set the object reference : minmax for von-Mises constraint?
<?xml version="1.0" encoding="UTF-8"?>
and why we can't only choose the max or min
and the object pos reference and neg means the max stress and min stress?
<?xml version="1.0" encoding="UTF-8"?>
Altair EmployeeAltair Employee
when I set min without obj reference
<?xml version="1.0" encoding="UTF-8"?>
it will be show this fail :
*** ERROR # 1812 ***
Multiple responses are assigned to the DESOBJ objective function.
A MINMAX/MAXMIN objective function definition with DOBJREF should
be used instead.
Number of responses = 81
Altair EmployeeAltair EmployeeAltair EmployeeAltair Employee@Prakash Pagadala Thank you apply my question
I want to ask two problems:
1. what is mean about minmax, we set this so our object is min or max?
2. what is mean about negative reference
I have read the help but still don't know
Altair EmployeeAltair EmployeeAltair Employee
Your apply is at the next page so I first can't find it
thanks to your apply
But how can we explain the maximum minimum, I know the MinMax
and I want to ask why you set this, really thanks
I want to know the positive and negative reference value mean
Altair EmployeeAltair EmployeeAltair Employee
Hi,
Your shell thickness will be 0.8. Please correct the initial value and update the same.
Lower bound 0.1 means your model size can go upto 0.1 and not below that. So from the above picture your shell thickness should be bound between 5 and 0.1.
You can change the upper and lower bounds, update the DSIZE according to your requirement.