|
| |
|
| |
|
| |
|
| |
|
|
Structure life under a multiaxial loading
Svoboda, Jaroslav ; Balda, Miroslav ; Fróhlich, Vladislav
The contribution deals with a problem of fatigue life of structures exposed to a proportional random multiaxial loading in tension - pressure and torsion. Tests proved that a fatigue damage is stronglydependent on the main stress level, while maintaining the corresponding maximum shear stress constant. The obtained fatigue-life curve as a main stress standard deviation as function of the number of loading blocks has the similar character as the S-N curve under harmonic loading.
|
|
|
Problems of a limit fatigue stress under combined loading
Balda, Miroslav ; Svoboda, Jaroslav
The theory of fatigue life of structures under combined synchronized harmonic loading has been extended. Limit stress of combined loadding corresponding the fatigue limits has been assembtet from experimental data. They obey both the law of ellipse for in-phaseloading and a bit modified law for out-of-phase loading. A new formula for its exponent has been built.
|
|
|
Statistical processingof fatigue tests in LATEX
Balda, Miroslav ; Svoboda, Jaroslav ; Fröhlich, Vladislav
The paper deals with a problem of making up protocols on material fatigue tests containing measured data, their regression, 90% and 95% confidence intervals, a diagram of all these functions, and a table of the processing results. All these steps are done in one computer run in the LATEX environment without any import of external graphics or results. New styles have been developed for the purpose. The system is fast reliable.
|
|
| |
|
| |
|
| |
guest ::
