Sentence examples for mean stress models from inspiring English sources

The S N curve approach and mean stress models of Smith Watson Topper and Walker yielded good correlation of fatigue lives in the life range of 102 105 cycles.

Correction of life predictions in strain or stress based approaches to fatigue are necessary when dealing with mean stresses; the Goodman, Morrow, Smith Watson Topper and Walker models are widely used mean stress models for mean stress correction in life calculation.

The proposed model is compared to the Morrow and the SWT mean stress correction models using experimental mean stress fatigue data for Incoloy 901 superalloy, 120 90-02 ductile cast iron and 7075-T651 alloynunderloy under tensile and compressive mean stress loadings.

A cumulative damage model is employed using a rainflow cycle counting scheme and fatigue life estimates are made for 2024-T3 alusingm using various non-zero mean stress fatigue models, including Walker, Morrow, Morrow with true fracture strength, and MMPDS.

In this paper the damage occurrence and accumulation within the material are described by means of models of Bauschinger effect, kinematic and isotropic hardening (or softening) according to Chaboche material model and mean stress relaxation according to Ohno Wang material model.

A baseline zero-mean stress model is additionally considered.

A new phenomenological approach is presented to model the mean stress effect in various material systems and fibre dominated stacking sequences.

The time effects considered in this modelling are those that arise from shrinkage and creep deformations of the concrete slab, and these effects are modelled using algebraic representations such as those of the age-adjusted effective modulus method (AEMM) and the mean stress method (MS), which are viscoelastic models for concrete deformation that can be stated algebraically.

This model describes the compressive mean stress behavior very well, and predicts a strong sensitivity to tensile mean stresses.

The proposed definition applies to quantities encountered in the fatigue modeling of different materials: mean stress or mean hydrostatic stress for metals, mean damage driving force or mean equivalent strain for quasi-brittle materials or for composites.

Thus, the Basquin equation is a particular case of the present model for the case where mean stress is zero.