Development of a multidisciplinary–multiresponse robust design optimization model

Kovach, Jamison V.; Cho, B. R.

doi:10.1080/03052150802046304

Cited by 43 publications

(29 citation statements)

References 18 publications

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“…Some other methods of assessing the robustness have been applied, and as a consequence, some efforts with a dual response surface approach have been seen, e.g. Vining et al [32,33], Kovach and Cho [14], Shin and Cho [26] and Lönn et al [18]. In these works, two metamodels are created for each response, one approximating the mean value and other the standard deviation.…”

Section: Introductionmentioning

confidence: 98%

Experimental and finite element robustness studies of a bumper system subjected to an offset impact loading

Lönn

Bergman

Nilsson

et al. 2011

International Journal of Crashworthiness

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A product of high quality is a product that performs well, not only in exactly the situations it was designed to handle but also in slightly different situations that arise in the usage of the product. As a specific example, the performance of a bumper system should not depend on small fluctuations in the manufacturing process or on small variations in the impact event. In this work, the robustness of an existing vehicle bumper system subjected to a crash load has been evaluated both experimentally and numerically. In the latter case, different widely used approaches to numerically assess the robustness have been utilised. A reliable numerical robustness study provides the designer with a valuable tool for improving a design, and an evaluation of these methods in this context is therefore of interest. It is concluded that for the example under study, both the Monte Carlo method and the metamodel-based Monte Carlo methods work well. Furthermore, for moderate dispersions levels, i.e. a small design space with no bifurcation in the deformation pattern, a linear response approximation is shown to have a sufficient accuracy to be used in the metamodel-based robustness analysis. The performed numerical robustness studies also point out that the performance of a nominal simulation, i.e. a simulation conducted with mean values for all variables, does not in general predict the mean performance of the finite element model. Finally, some possible design improvements for the bumper system under study are also identified.

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Section: Introductionmentioning

confidence: 98%

Experimental and finite element robustness studies of a bumper system subjected to an offset impact loading

Lönn

Bergman

Nilsson

et al. 2011

International Journal of Crashworthiness

View full text Add to dashboard Cite

show abstract

“…11 The professionals are not working as they would in their normal practice. 12 They are instead working alongside and in conjunction with each other. 13 The lawyer's client has trust in the attorney-client privilege and it is imaginable how damaging it would be if a client did not feel that he or she could disclose any and all relevant information to his or her lawyer 14 and to the mental health professional who works with the lawyer.…”

Section: Introductionmentioning

confidence: 99%

Lawyers and Mental Health Professionals Working Together: Reconciling the Duties of Confidentiality and Mandatory Child Abuse Reporting

Conti

2011

Family Court Review

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Lawyers are increasingly finding themselves working in conjunction with a social worker and/or a psychologist. This dynamic can be found in organizations that take a multi‐disciplinary approach to the law, such as New York City's Legal Aid Society and Lawyers for Children. Collaborative law is another such example. Collaborative law is an increasing trend in family law; it provides a divorcing couple the opportunity to work with professionals from different disciplines, without being subject to the court system. While a multi‐disciplinary approach to the law has the ability to maximize the value of representation, it also can create tension when inconsistent duties are imposed by conflicting professional obligations. A major area of conflict is between the lawyer's duty to maintain client confidences and the mental health professional's duty to report child abuse. This Note discusses the important policies behind these opposing duties. The Note recommends amending state child abuse and neglect laws in order to eliminate the conflict between the professions' duties and allow lawyers and mental health professionals to work together more harmoniously. Amending state child abuse and neglect laws will allow for mental health professionals working with a lawyer who represents a client the same reporting duties as lawyers in the process.

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“…Kovach et al [11] and Shin et al [12] use replicates of the same design in order to obtain estimates of the variances for the different responses.…”

Section: A C C E P T E D Article In Pressmentioning

confidence: 99%

An approach to robust optimization of impact problems using random samples and meta-modelling

Lönn

Fyllingen

Nilssona

2010

International Journal of Impact Engineering

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Conventionally optimized structures may show a tendency to be sensitive to variations, for instance in geometry and loading conditions. To avoid this, research has been carried out in the field of robust optimization where variations are taken into account in the optimization process. The overall objective is to create solutions that are optimal both in the sense of mean performance and minimum variability. This work presents an alternative approach to robust optimization, where the robustness of each design is assessed through multiple sampling of the stochastic variables at each design point. Meta models for the robust optimization are created for both the mean value and the standard deviation of the response. Furthermore, the method is demonstrated on an analytical example and an example of an aluminium extrusion with quadratic cross section subjected to axial crushing.It works well for the chosen examples and it is concluded that the method is especially well suited for problems with a large number of random variables, * Corresponding author. Tel.:+46-13-282475; fax:+46-13-282717.Email address: david.lonn@liu.se (David Lönn)Preprint submitted to International Journal of Impact Engineering July 2, 2009 M A N U S C R I P T A C C E P T E D ARTICLE IN PRESSsince the computational cost is essentially independent of the number of random variables. In addition, the presented approach makes it possible to take into consideration variations that cannot be described with a variable. This is demonstrated in this work by random geometrical perturbations described with the use of Gaussian random fields.

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Development of a multidisciplinary–multiresponse robust design optimization model

Cited by 43 publications

References 18 publications

Experimental and finite element robustness studies of a bumper system subjected to an offset impact loading

Experimental and finite element robustness studies of a bumper system subjected to an offset impact loading

Lawyers and Mental Health Professionals Working Together: Reconciling the Duties of Confidentiality and Mandatory Child Abuse Reporting

An approach to robust optimization of impact problems using random samples and meta-modelling

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