Results 191 to 200 of about 22,989 (224)

The Multiaxial Equivalent of Stressed Volume

1994
A comprehensive probabilistic fracture analysis methodology should allow data to be combined or pooled from multiple specimen sizes and geometries such that all available fracture data can be integrated into strength/probability estimates and such that size-scaling aspects of the model can be tested.
WT Tucker, CA Johnson
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Behavior of Concrete under Multiaxial Stress States

Journal of the Engineering Mechanics Division, 1980
Differences in the observed behavior of concrete under multiaxial stress states can be ascribed to either different materials or different test methods. In order to isolate the effects of these two variables, seven institutions cooperated in a test program in which specimens of indentical material were subjected to variety of biaxial and triaxial ...
Kurt Berlin Gerstle, Roger M. Zimmerman, Helmut Winkler, Leonard A. Traina, Michael A. Taylor, Gerald Schickert, Pio Rossi, John B. Newman, Diethelm Linse, Hon-Yim Ko, Michael D. Kotsovos, Paolo Bertacchi, Roberto Bellotti, Helmut Aschl   +13 more
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Notched Fatigue Behavior under Multiaxial Stress States

Advanced Materials Research, 2014
Most engineering components and structures contain stress concentrations, such as notches. The state of stress at such concentrations is typically multiaxial due to the notch geometry, and/or multiaxiality of the loading. Significant portions of the fatigue life of notched members are usually spent in crack initiation (crack formation and microscopic ...
Nicholas R. Gates, Ali Fatemi, Darrell F. Socie, Nam Phan   +3 more
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Behaviour of concrete under multiaxial stresses — A review

Cement and Concrete Research, 1979
Abstract The purpose of the present paper is to provide a survey of the behaviour of concrete, as determined by experimental research. After a description of the difficulties encountered in the experimental investigation of concrete, the experimentally determined behaviour under one, two and three dimensional stress systems is treated. An explanation
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Multiaxial Stress Rupture Criteria for Ferritic Steels

1989
Many ferritic steels become ‘creep-brittle’ after long times at high temperatures. This paper is concerned with the behaviour of such steels under multiaxial stressing, which is the type of loading that they invariably encounter in service in power and process plant applications.
P. F. Aplin, G. F. Eggeler
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Multiaxial fatigue criterion with mean stress effect

International Journal of Pressure Vessels and Piping, 1996
Abstract A criterion is developed for multiaxial fatigue life prediction including the mean stress effect. The total strain energy density modified by the weight function associated with mean stress has been used as a damage parameter. A brief description of how Δ W t can be calculated is given.
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Small fatigue crack growth under multiaxial stresses

International Journal of Fatigue, 2014
Abstract A significant portion of the fatigue life is typically spent in growth of small cracks. In addition, the stress state in many structures and components is multiaxial. Therefore, the study of small crack growth behaviour with regards to its growth path as well as growth rate under combined stresses can be of great importance in many ...
Nima Shamsaei, Ali Fatemi
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Estimating Fatigue Due to Cyclic Multiaxial Stress

Journal of Vibration and Acoustics, 1987
A new expression similar to the Huber-von-Mises-Hencky criterion for multiaxial stresses, also known as the distortional energy theory, is derived from the second order stress invariants of the stress tensor, rather than from the deviatoric stress tensor, as in the derivation of the Huber-von Mises-Hencky criterion.
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Multiaxial Stress-Strain Creep Analysis for Notches

1994
A method for predicting time-dependent stresses and strains in the case of localized creep has been developed. This method is based on strain energy density considerations and is an extension of the method previously developed by the authors for localized time-independent plasticity problems.
AA Moftakhar, G Glinka, D Scarth, D Kawa
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Creep and cavity growth under multiaxial stresses

Philosophical Magazine A, 1981
Abstract A consideration of cavity growth by the acquisition of vacancies diffusing along grain boundaries in a polycrystalline material under stress at elevated temperatures leads to the evaluation of the influence of a multiaxial stress system on cavities on grain boundaries at any angle to the principal stresses.
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