转自https://www.youtube.com/watch?v=8ga1_3XG27U&t=0s&list=PL0Ya8d8RGCTqSaM6GbGHXqAUq1ga7-N__&index=14
We will go over how to create line bodys and assign built in cross-sections. We will then setup our loads and boundary conditions to solve for the dif