Strain-life curves with Morrow and SWT mean stress corrections for SAE 4130 steel, with measured strain-controlled test data overlaid

FEA

What is Low Cycle Fatigue? Guide for FEA Professionals

What is low cycle fatigue? Plastic strain per cycle, stabilized hysteresis loops, Coffin-Manson life prediction, mean stress relaxation, and the nonlinear FEA workflow that captures it.
Read More >>
What Is Grms in Vibration? Here is a NAVMAT P-9492 acceleration PSD on log-log axes with the area under the curve hatched in red, showing GRMS as the square root of 36.7 g² equals 6.06.

Vibration

What Is Grms in Vibration? A Practical Guide for Random Vibration

Grms is the square root of the area under a PSD. Learn the log–log integration formulas, work through NAVMAT P-9492, and avoid the trapezoid trap.
Read More >>
Engineering bracket shown transitioning from smooth solid to triangulated finite element mesh, titled Finite Element Method Analysis

FEA

Finite Element Method Analysis: From PDEs to Practical FEA​

A guide to the finite element method: how FEA turns differential equations into solvable systems, which analysis type to choose, and how to verify results.
Read More >>
Substructuring in FEA condensing a full finite element model of a component into a superelement with retained master DOF.

FEA

Substructuring in FEA: Superelement & Craig-Bampton Guide

Substructuring condenses linear components into superelements with zero accuracy loss in statics. Learn static condensation, Guyan reduction vs Craig-Bampton CMS, and a proven workflow.
Read More >>
Fillet weld FEA T-joint geometry with weld leg h and throat t dimensions and radial FEA mesh for effective notch stress analysis

FEA

Weld FEA: Finite Element Analysis Guide for Welded Structures

Weld FEA fails at sharp toes, where stress singularities defy mesh refinement. Master shell and solid modeling, stress extraction, mesh sizing, and S-N curve matching.
Read More >>
Three common weld toe defects: undercut, cold lap, and underfill shown in cross-section on fillet welds

FEA

Weld Toe: Definition, Stress Concentration & FEA Modeling Guide

The weld toe is where fatigue cracks initiate in welded structures. Learn to define it, model its stress concentration in FEA, and extend fatigue life.
Read More >>
Fillet weld throat comparison between concave and convex weld bead profiles showing effective throat t and leg size h

FEA

What Is Weld Throat? Calculation, Measurement & AWS Guide

Learn how to calculate weld throat for fillet and butt welds, avoid the common leg-vs-throat error, and apply correct dimensions in FEA stress models.
Read More >>
Side-by-side stress-strain diagrams comparing Neuber's rule and Glinka's rule for FEA plasticity correction. The left graph shows Neuber's rule using equivalent triangular areas, while the right graph shows Glinka's Equivalent Strain Energy Density (ESED) method using the area under the material curve.

FEA

Neuber’s Rule in FEA: Complete Plasticity Correction Guide

Neuber's rule converts pseudo-elastic FEA stress into realistic elastic-plastic results for fatigue analysis. Learn the formula, Neuber vs. Glinka, and step-by-step workflow.
Read More >>
high cycle fatigue and low cycle fatigue

FEA

High Cycle Fatigue and Low Cycle Fatigue: Complete Engineering Comparison Guide

Learn the key differences between high cycle fatigue and low cycle fatigue — covering mechanisms, cycle thresholds, material testing, FEA workflows, and fractography for accurate life prediction.
Read More >>
Scroll to Top