Results 151 to 160 of about 2,462 (206)

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
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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
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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
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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
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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
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Engineering Components under Multiaxial Loading

Materials Testing, 2001
This paper deals with some of the most important theoretical approaches to calculate the fatigue life of engineering components under multiaxial-proportional loading. The calculation procedures which are to be followed are demonstrated using as an example, a notched shaft made from two different materials under uniaxial and multiaxial loading with ...
Georgios Savaidis, Alexander Savaidis, Timm Seeger   +2 more
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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
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Climate Chamber for Testing of Multiaxial Loading

2016
This paper examines the equipment for testing of materials under different climatic conditions with control of humidity environment. The described device allows testing samples for tension and pressure in uniaxial loading. For static testing, samples can be used in a separate climate chamber or in an external climate chamber with a possibility of ...
D. Vejrych, R. Martonka, R. Kovář
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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 ...
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A fatigue criterion for general multiaxial loading

Fatigue & Fracture of Engineering Materials & Structures, 2000
An incremental fatigue damage model is proposed. The model incorporates the critical plane concept in multiaxial fatigue, plastic strain energy and material memory in cyclic plasticity. With an incremental form the model does not require a cycle counting method for variable amplitude loading.
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