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Principal Stress Calculator
Resolve plane or 3D stress states into sorted principal stresses for FEA postprocessing checks.
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Finite element analysis and solid-mechanics helpers for stresses, shafts, beams, columns, joints, fatigue, bearings, and materials.
FEA utilities support preliminary solid-mechanics calculations, stress transformation, Von Mises and Tresca checks, factor-of-safety review, stress-strain relationships, beam bending stress, thermal stress, torsion, shaft sizing, buckling, beam deflection, fatigue life, weld strength, bolt preload, bearing life, material-property conversion, and solver-preparation workflows.
17 tools
Published calculator entries in this category.
Resolve plane or 3D stress states into sorted principal stresses for FEA postprocessing checks.
Compute distortion-energy equivalent stress from component or principal stress inputs.
Resolve principal stresses and calculate the maximum principal-stress difference.
Resolve center, radius, principal stresses, transformed stress, and maximum in-plane shear.
Compare stress demand with yield strength or allowable stress using selected criteria.
Solve simple Hooke's law and axial stress-strain relationships with unit normalization.
Apply the flexure formula to common beam section shapes and custom section modulus values.
Estimate stress from prevented thermal expansion with full, partial, or prescribed-strain restraint modes.
Estimate torsional shear stress, angle of twist, torque, power, and circular shaft size using SI-normalized elastic torsion formulas.
Estimate required solid or hollow circular-shaft diameter using torque, bending moment, service factors, and equivalent-stress criteria.
Calculate Euler buckling load, effective length, slenderness ratio, radius of gyration, and Johnson parabolic estimates for ideal columns.
Estimate maximum deflection, slope, flexural rigidity, and section properties for common Euler-Bernoulli beam cases.
Calculate Basquin life, two-point S-N curve coefficients, Goodman/Gerber/Soderberg corrections, and Miner damage for preliminary fatigue review.
Calculate fillet throat, weld effective area, direct weld stress, allowable capacity, and required fillet leg size for preliminary checks.
Calculate preload from torque, torque from preload, proof-load based preload, bolt stress area, and simple bolt/joint stiffness load share.
Calculate L10 life for ball or roller bearings, life hours from rpm, equivalent dynamic load, and static load safety factor.
Published converter entries in this category.
Convert elastic, density, strength, and thermal properties with isotropic relationship checks and ANSYS APDL or CalculiX text output.
The category covers principal stress, Von Mises stress, Tresca stress, Mohr's circle, maximum shear, bending stress, thermal stress, and preliminary factor-of-safety comparisons.
Both are commonly used for ductile-metal yield screening; material behavior, governing standard, stress state, and the required conservatism determine which criterion is appropriate.
It visualizes the transformation between normal and shear stress, identifies principal values, and shows maximum in-plane shear for a two-dimensional stress state.
No. They apply closed-form bending, deflection, buckling, and stress relationships for idealized members and do not create a mesh or solve a finite element model.
Use them as life-screening calculations based on supplied S-N or rating data; loading history, reliability, surface, lubrication, contamination, and manufacturer guidance still matter.
No. Presets are starting values for examples and preliminary checks. Verify grade, condition, temperature, direction, test basis, and source for the actual material.
Ensure the demand and allowable value use compatible stress measures, units, failure modes, load combinations, uncertainties, and standard-defined limits.
No. Final decisions require applicable standards, validated analysis, mesh and convergence evidence, boundary-condition review, material verification, testing where required, and qualified engineering judgment.
FEA Tools provide closed-form solid-mechanics checks and model-preparation helpers for stress, deflection, shafts, beams, columns, fatigue, bearings, and joints. They do not solve a finite-element model.
State load path, geometry, material model, supports, and units; calculate a benchmark quantity; then compare it with mesh-refined, contact-aware, and boundary-condition-reviewed analysis where the problem requires FEA.
Many formulas assume ideal geometry, linear elasticity, small deformation, simple supports, or nominal stress. Stress concentrations, plasticity, contact, fatigue spectrum, imperfections, and code safety factors require separate review.