How many sample points are required to build an accurate metamodel?
Requires more sample points
Enough with fewer sample points
Conventional metamodeling process
Choose an appropriate sampling technique
· What is the most appropriate sampling technique?
· How many sample points would be enough?
· How to add additional samples should it be required?
Perform CAE simulation or experiment for each sample
· How to automate the repetitive simulation process?
Choose a metamodeling technique and generate metamodel
· What is the most appropriate metamodeling technique?
· How to set the user-defined parameters?
Calculate metamodel accuracy. If not good enough, go back to ①.
· How to assess the accuracy of the metamodel?
· What can be done if the metamodel is not reliable? Should additional points be added or a different metamodeling technique be used?
Auto Metamodeler Concept
Auto Metamodeler process
Define target accuracy for the metamodel
Algorithm repeats sampling and metamodeling until the target accuracy is reached
Export the built metamodel for simulation and design
Use the prediction model for real-time design-space exploration