I see images of steel connections, concrete dams, and other complicated 3D objects in papers which finite element analysis has been performed on them. My questions are:
How these objects are created in MATLAB? Should we give all the points ourselves?
How can we create mesh for them to perform finite element analysis? This one might be a general question with many answers but if it is possible please give some main points or references about it.
Are these objects drawn in a software then their coordinates exported to MATLAB? If so, then what are these software?