Temat: loading - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Fatigue "safe-life" criterion for metal elements under multiaxial static and dynamic random loads
Autorzy:: Kolenda, J.
Powiązania:: https://bibliotekanauki.pl/articles/259229.pdf
Data publikacji:: 2004
Wydawca:: Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
Tematy:: design criteria
multiaxial loading
random stress
mean stress effect
Opis:: Random stress with Cartesian components of known statistical moments of their mean values and power spectral densities of stochastic stress processes is considered. To accoŹunt for the mean stress effect the generalised Soderberg criterion for ductile materials is employed. An equivalent stress with periodic (in the mean-square sense) components is defined by means of the equivalence conditions based on the average strain distortion energy. Also, is formulated the fatigue "safe-life" design criterion which covers the condiŹtions of both static strength and fatigue safety and includes yield strengths and fatigue limits which : have simple physical interpretation, can be determined by uniaxial tests, are directly related to the applied loads, and can reflect material anisotropy.
Źródło:: Polish Maritime Research; 2004, 3; 21-24
1233-2585
Pojawia się w:: Polish Maritime Research
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 2.

Tytuł:: Fatigue "safe-life" criterion for metal elements under multiaxial constant and periodic loads
Autorzy:: Kolenda, J.
Powiązania:: https://bibliotekanauki.pl/articles/259403.pdf
Data publikacji:: 2004
Wydawca:: Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
Tematy:: design criteria
multiaxial loading
periodic stress
mean stress effect
Opis:: Periodic stress with Cartesian components given in the form of Fourier series is consideŹred. To account for the mean stress effect the generalised Soderberg criterion for ductile materials is employed. An equivalent stress with synchronous components is defined by means of the equivalence conditions based on the average strain energy of distortion. The fatigue "safe-life" design criterion is formulated which covers the conditions of both static strength and fatigue safety and includes material constants that have simple physical inŹterpretation, can be determined by uniaxial tests, are related directly to the applied loads and can reflect material anisotropy.
Źródło:: Polish Maritime Research; 2004, 2; 23-26
1233-2585
Pojawia się w:: Polish Maritime Research
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 3.

Tytuł:: High-cycle fatigue criterion for anisotropic metals under multiaxial constant and periodic loads
Autorzy:: Kolenda, J.
Powiązania:: https://bibliotekanauki.pl/articles/259537.pdf
Data publikacji:: 2005
Wydawca:: Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
Tematy:: design criteria
multiaxial loading
periodic stress
mean stress effect
Opis:: Periodic stress with Cartesian components given in the form of Fourier series is considered. To account for the mean stress effect the modified Soderberg's formula is employed. An equivalent stress with synchronous components is defined. The design criterion for a finite fatigue life of metal elements is formulated. It covers the conditions of both static strength and fatigue safety in the high-cycle regime and includes material constants which have simple physical interpretation, can be determined by uniaxial tests, are related directly to the applied loads, and can reflect material anisotropy.
Źródło:: Polish Maritime Research; 2005, 4; 10-14
1233-2585
Pojawia się w:: Polish Maritime Research
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 4.

Tytuł:: Modification of Hookes law for multiaxial stress in viscoelastic solids
Autorzy:: Kolenda, J.
Powiązania:: https://bibliotekanauki.pl/articles/258894.pdf
Data publikacji:: 2008
Wydawca:: Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
Tematy:: Hooke's law
viscoelastic material
Kelvin-Voigt’s model
multiaxial loading
Opis:: On the basis of Hooke’s law for multiaxial stress in elastic solids, similar relationships for viscoelastic materials are considered. It is assumed that the material is homogeneous and isotropic, and that the Kelvin-Voigt’s model is applicable to normal strain components. An analogous model is also taken for shear strain components. It is shown that the ratio of coefficients of viscous damping of normal and shear strain components is equal to the ratio of Young modulus and shear modulus. As a result, the modified Hooke’s law for multiaxial stress in viscoelastic materials has been formulated which includes three material constants: Young modulus, Poisson’s ratio and coefficient of viscous damping of normal strain.
Źródło:: Polish Maritime Research; 2008, 2; 22-25
1233-2585
Pojawia się w:: Polish Maritime Research
Dostawca treści:: Biblioteka Nauki

Artykuł

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