Reliability-based design optimization of a vehicular live load model

Kamjoo, Vahid; Eamon, Christopher D.

doi:10.1016/j.engstruct.2018.05.033

Cited by 12 publications

(4 citation statements)

References 33 publications

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“…The constraint was obtained as a predictive indicator of reliability, and they used genetic algorithms as an optimization approach. In [8] were developed a Multiobjective optimization model which was performed by the same algorithm to optimize the reliability and the weight of structures. Reliability is predicted using the Reliability Index, and the variables of the problem are geometric dimensions, number of components, and weight of the structure.…”

Section: Introductionmentioning

confidence: 99%

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A Novel Approach for Integrating the Optimization of the Lifetime and Cost of Manufacturing of a New Product during the Design Phase

Guini¹,

Barkany²,

Jabri³

et al. 2021

SAE Int. J. Mater. Manf.

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Maximum lifetime and minimum manufacturing cost for new products are the primary goals of companies for competitiveness. These two objectives are contradictory and the geometric dimensions of the products directly control them. In addition, the earlier design errors of new products are predicted, the easier and more inexpensive their rectification becomes. To achieve these objectives, we propose in this article a novel model that makes it possible to solve the problem of optimizing the lifespan and the manufacturing cost of new products during the phase of their design. The prediction of the life of the products is carried out by an energy damage method implemented on the Finite Element (FE) calculation by using the ABAQUS software. The manufacturing cost prediction is carried out by applying the ABC cost estimation analytical method. In addition, the optimization problem is solved by the method of genetic algorithms. The proposed model can be successfully applied for the optimization of new mechanical products made by subtractive manufacturing. The products which mostly benefits from this model are those used in machines and in the automotive or aeronautic fields. The proposed approach can be directly used by the designer for an optimal preliminary design of new products whose manufacture is done by the same company or subcontracted entirely or partially by other companies.

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Section: Introductionmentioning

confidence: 99%

“…The manufacturing cost is estimated using an analytical method and the variables of the problem are the geometric dimensions. Genetic algorithms [8] Maximize reliability and minimize weight…”

Section: Introductionmentioning

confidence: 99%

A Novel Approach for Integrating the Optimization of the Lifetime and Cost of Manufacturing of a New Product during the Design Phase

Guini¹,

Barkany²,

Jabri³

et al. 2021

SAE Int. J. Mater. Manf.

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“…Reliability analyses are usually based on standard recommendations available, for example, in [11] and [12]. Recent service load studies mainly regard dynamic loads, such as the passage of vehicles on bridges (e.g., [13][14][15][16]), loads during earthquakes (e.g., [17,18]) and explosions (e.g., [19,20]).…”

Section: Introductionmentioning

confidence: 99%

Bulletin of the Polish Academy of Sciences: Technical Sciences

Błazik-Borowa,

Pieńko,

Szer

et al. 2021

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The paper discusses service load measurements (weight of construction materials, small equipment and workers) conducted on 120 frame scaffoldings all over Poland in 2016-2018. Despite the fact that the scaffolding should ensure the safety of its users, most accidents on construction sites are caused by fall from height. Service loads are one of the elements affecting the safety of scaffolding use. On the basis of the studies, maximum load on one platform and maximum load on a vertical scaffolding module for one day were obtained. They were treated as the random variables of the maximum values. Histograms and probability density functions were determined for these variables. The selection of a probability distribution consisted in the selection of a probability density function by means of fitting curves to the study result histograms using the method of least squares. The analysis was performed for distribution Weibull and Gumbel probability density functions which are applied for maximum values of random variables. Parameters of these functions can be used for the purposes of the reliability analysis to calibrate partial safety factors in simulation of service load during the scaffolding failure risk assessment. Besides, the probability of not exceeding the standard loads provided for frame scaffoldings for 120 weeks was established on the aforementioned basis. The results of the presented research show that in Poland there is a high probability of exceeding the permissible service loads in one year and thus there is a high risk of scaffolding damage.

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“…The calculation methods of slab system in urban transportation hub mainly include three methods: arranging uniform load in the whole area, arranging specific load at the most unfavorable position, and calculating and arranging equivalent uniform load according to structure, and they will be introduced in the next three paragraphs. Whichever method is selected, the design of the hub slab should achieve the balance between the structural safety and economy (Kamjoo and Eamon 2018;Junyuan, Deng, and Wei 2017). Therefore, the rational calculation method of the live load for the urban transportation hub is of great importance in structural design.…”

Section: Introductionmentioning

confidence: 99%