Results 151 to 160 of about 3,949 (186)

Multiaxial Loads and Stresses

2017
Many design tasks are concerned with structural components or systems subject to multicomponent loads. In this case, several forces and moments, which are partially time-independent, can act on the structural component to be evaluated. The local stress state and its variation with time at relevant locations result from the superposition of the local ...
Michael Köhler, Sven Jenne, Kurt Pötter, Harald Zenner   +3 more
openaire   +1 more source

Transformation of a Nonproportional Multiaxial Loading to an Equivalent Proportional Multiaxial Loading

2008
Fatigue fracture is a complex domain that manufacturers have always been intended to control in order to predict the life duration of structures. For this purpose, many criteria saw the day and each of them is based on a specific formulation. Palin Luc proposed an energetic criterion that takes into account the stress gradient, nature of applied load ...
A. Chamat, Z. Azari, M. Abbadi, F. Cocheteux   +3 more
openaire   +1 more source

Fatigue life estimation under multiaxial loadings

International Journal of Fatigue, 1999
Abstract In this paper, the fatigue strain energy density parameter for the critical plane, proposed by Glinka et al., Fatigue Fract. Engng. Mater. Struct. 1995;18(1):37, is modified so that it can be used to predict the fatigue life of various materials under multiaxial loading.
Wen-Fung Pan, Chao-Yu Hung, Lieh-Lin Chen   +2 more
openaire   +1 more source

Fatigue Life prediction under multiaxial loading

46th AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference, 2005
A unified multiaxial fatigue life model for isotropic and anisotropic materials is proposed. The proposed fatigue model is a critical plane-based model. Most of the earlier models based on the critical plane approach assume that the critical plane only depends on the stress state.
Yongming Liu, Sankaran Mahadevan
openaire   +1 more source

Multiaxial loading of thermoplastic laser welds

Welding in the World, 2016
The number of laser welded applications in industry is rising steadily. For example, laser welding of polymers is used in the automotive, household and medical sectors. In these areas, a high focus on long-term durability and reliability of laser welds is required.
D. Spancken, J. Wacker, A. Büter, T. Melz   +3 more
openaire   +1 more source

Multiaxial Fatigue Under Variable Amplitude Loads

Journal of Engineering Materials and Technology, 1999
Multiaxial fatigue under variable amplitude loading is investigated using Kandil et al.’s parameter, rainflow cycle counting on the shear strain history, and the Miner-Palmgren damage rule. Fatigue data are obtained on tubular specimens of S45C steel under proportional and nonproportional tension-torsion loading.
Kim, KS, Park, JC, Lee, JW
openaire   +2 more sources

Failure Prediction for Laminated Composites under Multiaxial Loading

Journal of Reinforced Plastics and Composites, 1999
An analysis for failure prediction is presented for laminated composites under extension and bending. The method is based on the determination of the fiber and matrix strains in each composite lamina. Under combined extension and bending, layer strains in a composite section are computed by means of the laminate theory and used as input for a three ...
Eraslanoglu, G, Anlas, G, Ardic, ES
openaire   +2 more sources

A multiaxial fatigue criterion for random loading

Fatigue & Fracture of Engineering Materials & Structures, 2003
ABSTRACTA multiaxial fatigue criterion for random loading is proposed. Firstly, the orientation of the critical plane, where fatigue life estimation is carried out, is determined from the weighted mean position of the principal stress directions. Then, the scalar value of the normal stress vectorN(t) perpendicular to the critical plane is taken as the ...
CARPINTERI, Andrea, SPAGNOLI, Andrea, VANTADORI, Sabrina   +2 more
openaire   +2 more sources

Multiaxial loading and fatigue lifetime in LCF

Materials Testing, 2004
Abstract Generally, most machine parts are loaded with a combination of different variable forces and moments. This often causes a state of multiaxial stress in the fatigue critical areas of the parts. In most cases, a nonproportional cyclic multiaxial state of stress occurs.
Arash Amadi, Harald Zenner
openaire   +1 more source

Treatment of Multiaxial Loading

2009
Abstract This chapter addresses the question of how to deal with multiaxial stresses and strains when using the strain-range partitioning method to analyze the effects of creep fatigue. It is divided into three sections: a general discussion on the rationale used in formulating rules for treating multiaxiality, a concise listing of the ...
openaire   +1 more source