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# The NAFEMS Glossary

A | B | C | D | E | F | G | H | I | J | K | L | M |

N | O | P | Q | R | S | T | U | V | W | X | Y | Z |

Click to access terms A-C of the glossary

Terms D-I of the glossary can be found below

Click to access terms J-M of the glossary

Click to access terms N-R of the glossary

Click to access terms S-Z of the glossary

# Terms D-I

**Damage Tolerance**

**Damped Eigenvalues**

**Damped Eigenvectors**

**Damped Natural Frequency**

**Damping**

**Damping Factor**

**Degenerate Elements**

**Degrees Of Freedom**

**Delamination**

**Det(J) Det J**

**Deterministic Analysis**

**Deviatoric Stress And Strain**

**Diagonal Decay**

**Diagonal Generalised Matrix**

**Die-Away Length**

**Direct Integration**

**Direction Cosines**

**Discrete Crack Model**

**Discrete Parameter Models (Discretised Approach)**

**Displacement Control**

**Displacement Method (Displacement Solution)**

**Displacement Plots**

**Displacement Substitution Method**

**Displacement Vector**

**Dissimilar Shape Functions Incompatible Shape Functions**

**Distortion**

**Domain Integrals**

**Drucker-Prager Equivalent Stresses**

**Drucker-Prager Yield Criterion**

**Ductile Fracture**

**Dynamic Analysis**

**Dynamic Contact**

**Dynamic Flexibility**

**Dynamic Flexibility Matrix**

**Dynamic Modelling**

**Dynamic Stiffness Matrix**

^{2}M).

**Dynamic Stresses**

**Dynamic Substructuring**

**Effective Strain**

**Effective Stress**

**Eigenvalue Problem**

**Eigenvalues**

**Eigenvectors**

**Elastic Follow-Up**

**Elastic Foundation**

**Elastic Stiffness**

**Elastic Unloading**

**Elastic-Plastic Fracture Mechanics**

**Electric Fields**

**Element**

**Element Assembly**

**Element Strains Element Stresses**

**Element Types**

**Energy Difference Technique**

**Energy Methods Hamiltons Principle**

**Energy Release Rate**

**Engineering Normalisation Mathematical Normalisation**

**Engineering Simulation**

**Engineering Strain**

**Equilibrium**

**Equilibrium Equations**

**Equilibrium Finite Elements**

**Equivalent Material Properties**

**Equivalent Strain**

**Equivalent Stress**

**Ergodic Process**

**Eulerian Formulation**

**Eulerian Method**

**Exact Solutions**

**Explicit Methods**

**Explicit Solution Scheme**

**Extrapolation Interpolation**

**Faceted Geometry**

**Fail-Safe**

**Fast Fourier Transform**

**Field Problems**

**Finite Differences**

**Finite Volume Methods**

**Flexibility Matrix Force Method**

**Flow Rule**

**Fluidity Parameter**

**Follower Forces**

**Forced Response**

**Forcing Function**

**Forcing Functions**

**Fourier Expansions Fourier Series**

**Fourier Transform**

**Fourier Transform Pair**

**Fracture Parameters/Criteria**

**Fracture Toughness ( )**

**Framework Analysis**

**Free Vibration**

**Frequency Domain**

**Frictional/Frictionless Contact**

**Frontal Solution Wavefront Solution**

**Froude Number**

**Gap Chattering**

**Gap Elements**

**Gauss Point Extrapolation Gauss Point Stresses**

**Gauss Points**

**Gaussian Elimination**

**Gaussian Integration Gaussian Quadrature**

**Generalised Coordinates**

**Generalised Mass**

**Generalised Stiffness**

**Geometric Stiffness Stress Stiffness**

**Geometrical Errors**

**Global Stiffness Matrix**

**Green’s Strain**

**Grid**

**Gross Deformations**

**Gross Yielding**

**Guard Vectors**

**Guyan Reduction Method**

**Gyroscopic Forces**

**Hardening**

**Hardening Structure**

**Harmonic Loading**

**Heat Conduction**

**Heat Transfer**

**Hermitian Shape Functions**

**Hermitian Matrix**

**Hidden Line Removal**

**Hierarchical Elements**

**High Aspect Ratio Low Aspect Ratio**

**Holonomic Constraints**

**Hookes Law**

**Hourglass Effects**

**Hourglass Mode**

**H-Refinement P-Refinement**

**Hybrid Composite**

**Hybrid Elements**

**Hydrostatic Stress And Strain**

**Hydrostatic Stress**

**Hyperelasticity**

**Hysteretic Damping**

**Ill-Conditioning Errors**

**Ill-Conditioning Ill-Conditioned Equations**

**Implicit Methods**

**Implicit Solution Scheme**

**Impulse Response Function**

**Impulse Response Matrix**

**Incompressibility**

**Incompressible Flow**

**Incremental Formulation**

**Incremental Solution**

**Inelastic Material Behaviour**

**Inertance (Also Called Accelerance)**

**Inertia Force**

**Initial Buckling**

**Initial Stiffness Method**

**Initial Strains**

**Integration By Parts**

**Interpolation Functions Shape Functions**

**Isoparametric Elements**

**Isotropic Hardening**

**Isotropic Material**