منابع مشابه
Effect of the Loading Spectrum and History Length on Fatigue Life Distribution under Random Loading
One major source of error commonly encountered in determining the fatigue life of a given element arises from the loads involved, which are usually of random nature. As a rule, resistance analyses, carried out by simulation or tests, are done by using a loading history accounting for the real loads involved that is repeated indefinitely until failure is encountered. The result is one of the man...
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This paper develops an assessment methodology based on vibration tests and finite element analysis (FEA) to predict the fatigue life of electronic components under random vibration loading. A specially designed PCB with ball grid array (BGA) packages attached was mounted to the electro-dynamic shaker and was subjected to different vibration excitations at the supports. An event detector monitor...
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Predicting the peak distribution of stochastic stress responses is critical for various fatigue analysis problems with stochastic uncertainties. In this paper, a method, based on the first-order reliability method (FORM), is proposed for estimating the peak distribution of stochastic response. The method linearizes the stochastic process at the associated most probable point. After linearizatio...
متن کاملBiodegradation of polyurethane under fatigue loading.
A method utilizing expansion of a diaphragm-type film specimen was developed to study in vitro biodegradation of poly(etherurethane urea) (PEUU) under conditions of dynamic loading (fatigue). A finite element model was used to describe the strain state, which ranged from uniaxial at the edges of the film to balanced biaxial tensile strain at the center. During testing, the film was exposed to a...
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Rock structures are subjected to cyclic tension-compression loading due to a blasting, earthquake, traffic and injection-production in underground storage case. Therefore study the fatigue behavior of rock samples under this type of loading is required. In this study, the accumulated fatigue damage for a Green Onyx rock sample which consisted of only one mineral composition with two-step high-l...
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ژورنال
عنوان ژورنال: Journal of the Society of Naval Architects of Japan
سال: 1983
ISSN: 1884-2070,0514-8499
DOI: 10.2534/jjasnaoe1968.1983.154_425