AutoCAD is a commercial software application for 2D and 3D computer-aided design (CAD) and drafting wikipedia.org

Finite Element Method (FEM) is a numerical technique for finding approximate solutions to boundary value problems for differential equations. wikipedia.org

Structural engineering is a field of engineering dealing with the analysis and design of structures that support or resist loads. Structural engineering is usually considered a specialty within civil engineering, but it can also be studied in its own right. wikipedia.org

Structural analysis is the determination of the effects of loads on physical structures and their components. wikipedia.org

The engineering design process is the formulation of a plan to help an engineer build a product with a specified performance goal. This process involves a number of steps, and parts of the process may need to be repeated many times before production of a final product can begin. wikipedia.org

Technical drawing, also known as drafting or draughting, is the act and discipline of composing plans that visually communicate how something functions or has to be constructed. wikipedia.org