Academy

FEM Fundamentals

Core theory, explained simply

• What is FEM?A plain-language explanation of how the finite element method works.
• Element TypesThe most common finite element types and when to use each.
• Mesh QualityWhat element quality means in Dr.Q: one number per element, and which shapes actually hurt the stress.
• Supports & ConstraintsHow supports work in FEM: fixed supports, symmetry, and degrees of freedom.
• Loads & Pressure FacesHow forces, pressures, and gravity are applied in FEM, and where mistakes happen.
• NonlinearityWhen linear FEM is not enough: geometric, material, and contact nonlinearities explained.
• Contact MechanicsHow Dr.Q handles contact between parts: Lagrange enforcement, contact types, and practical tips.
• ConvergenceWhat mesh convergence and solver convergence mean, and why a converged result is a trustworthy one.
• Modal AnalysisNatural frequencies, mode shapes, and what modal analysis tells you about a structure.
• Buckling AnalysisCritical load factors and buckling modes: when a slender structure becomes unstable under compression.
• Thermal CouplingThermal loads in structural FEM: temperature fields, thermal expansion, and thermo-mechanical analysis.
• SymmetryHalve or quarter a symmetric model without losing accuracy.