My PhD research will be in numerical modeling of Selective laser melting (SLM) process. I will be using finite element method, Fortran and python programming and a bit of machine learning in my research. My research is going to be completely computational based. I will be using Abaqus finite element analysis software for my research.
I took three courses (Finite Element Analysis, Mechanical behavior of materials and Numerical methods in scientific research) as part of my grad school requirements. I have a background in metallurgical engineering.
Now, I have got B-, A-, B+ grades in the three courses respectively. And I had worked hard for these courses, probably should have worked harder. My advisor says the grades and courses are a formality and I should focus on my research as I will learn more by doing than through any coursework.
It's true that I won't be developing any finite element code for my research and I will learn programming and fundamentals of material behavior as I go about my research, I am concerned that the abysmal grades in the courses is an indication to my research and future academic career inability. Is it? Any advice?