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Robust isogeometric topology optimization for piezoelectric actuators with uniform manufacturability

Frontiers of Mechanical Engineering 2022, Volume 17, Issue 2, doi: 10.1007/s11465-022-0683-5

Abstract: The main purpose of the current paper is to propose a robust isogeometric topology optimization (RITOFinally, the RITO formulation for the design of piezoelectric materials is developed, and several numerical

Keywords: piezoelectric actuator     isogeometric topology optimization     uniform manufacturability     robust formulation    

Nanocrystal technology for drug formulation and delivery

Tzu-Lan CHANG, Honglei ZHAN, Danni LIANG, Jun F. LIANG

Frontiers of Chemical Science and Engineering 2015, Volume 9, Issue 1,   Pages 1-14 doi: 10.1007/s11705-015-1509-3

Abstract: Nanocrystal formulation sheds new light on advanced drug development.

Keywords: drug nanocrystal     nanotechnology     formulation     bioavailability     stabilizers     drug delivery    

Semi-solid materials for controlled release drug formulation: current status and future prospects

Michelle TRAN,Chun WANG

Frontiers of Chemical Science and Engineering 2014, Volume 8, Issue 2,   Pages 225-232 doi: 10.1007/s11705-014-1429-7

Abstract: Semi-solid materials represent an important category of inactive ingredients (excipients) of pharmaceutical products. Here we review several common semi-solid polymers currently used in the controlled release formulations of many drugs. These polymers are selected based on their importance and broad scope of application in FDA-approved drug products and include several polysaccharides (cellulose, starch, chitosan, alginate) and carbomers, a group of mucoadhesive synthetic polymers. Glyceride-based polymers used in self-emulsifying drug delivery systems (SEDDS) will also be discussed for its importance in formulating poorly water-soluble drugs. Unique features and advantages of each type of semi-solid materials are discussed and examples of their use in oral delivery of drugs are provided. Finally, future prospects of developing new and better semi-solid excipients are discussed with the objective of facilitating clinical translation.

Keywords: controlled release     drug delivery     semi-solids     polymer     excipient    

Implementation of total Lagrangian formulation for the elasto-plastic analysis of plane steel frames

Bing XIA, Yuching WU, Zhanfei HUANG

Frontiers of Structural and Civil Engineering 2012, Volume 6, Issue 3,   Pages 257-266 doi: 10.1007/s11709-012-0163-9

Abstract: In this paper, the co-rotational total Lagrangian forms of finite element formulations are derived to perform elasto-plastic analysis for plane steel frames that either experience increasing external loading at ambient temperature or constant external loading at elevated temperatures. Geometric nonlinearities and thermal-expansion effects are considered. A series of programs were developed based on these formulations. To verify the accuracy and efficiency of the nonlinear finite element programs, numerical benchmark tests were performed, and the results from these tests are in a good agreement with the literature. The effects of the nonlinear terms of the stiffness matrices on the computational results were investigated in detail. It was also demonstrated that the influence of geometric nonlinearities on the incremental steps of the finite element analysis for plane steel frames in the presence of fire is limited.

Keywords: co-rotational     total Lagrangian     geometrical nonlinearity     fire     elasto-plastic    

Pareto lexicographic α-robust approach and its application in robust multi objective assembly line balancing

Ullah SAIF,Zailin GUAN,Baoxi WANG,Jahanzeb MIRZA

Frontiers of Mechanical Engineering 2014, Volume 9, Issue 3,   Pages 257-264 doi: 10.1007/s11465-014-0294-x

Abstract: method has been introduced in literature which defines the robust solution as a set of solutions whoseThese criteria might be significant for robust optimization of single objective optimization problemsThe proposed method called Pareto lexicographic α-robust approach can define Paretolexicographic α-robust solutions from different scenarios by considering multipleThe presented method can be significant to implement on different multi objective robust optimization

Keywords: Pareto     lexicographic α-robust     assembly line balancing    

Target-oriented robust optimization of a microgrid system investment model

Lanz UY, Patric UY, Jhoenson SIY, Anthony Shun Fung CHIU, Charlle SY

Frontiers in Energy 2018, Volume 12, Issue 3,   Pages 440-455 doi: 10.1007/s11708-018-0563-1

Abstract: It further investigates the effects of uncertain demand by using a target-oriented robust optimization

Keywords: microgrid     renewable resources     robust optimization     target-oriented robust optimization    

A novel finite element formulation for static bending analysis of functionally graded porous sandwich

Van Chinh NGUYEN; Trung Thanh TRAN; Trung NGUYEN-THOI; Quoc-Hoa PHAM

Frontiers of Structural and Civil Engineering 2022, Volume 16, Issue 12,   Pages 1599-1620 doi: 10.1007/s11709-022-0891-4

Abstract: This article aims to propose a finite element formulation based on Quasi-3D theory for the static bendingThe accuracy of the present finite element formulation is verified by comparing the obtained numerical

Keywords: sandwich plates     functionally graded porous     static bending     Quasi-3D theory     Q4 element    

Robust control of

Xueyan TANG, I-Ming CHEN

Frontiers of Mechanical Engineering 2009, Volume 4, Issue 1,   Pages 25-34 doi: 10.1007/s11465-009-0004-2

Abstract: This article describes the development of an flexure-based micromanipulator, with the features of decoupled kinematic structure, large motion range, high positioning precision, and fast response. The large motion range of flexure mechanisms is quantified by a given definition. Based on the given definition, large motion is achieved in the mechanical design of the -flexure parallel mechanism (FPM). To ensure high positioning precision and fast dynamic response, a hybrid control algorithm with both position control and vibration control are designed, using the H -theory. The controller strongly solves the three common problems of flexure mechanisms simultaneously, including unmodeled uncertainties, the external disturbances and vibration caused by inherent low damping.

Keywords: robust control     flexure mechanisms     flexure-based micromanipulator    

Shape design of arch dams under load uncertainties with robust optimization

Fengjie TAN, Tom LAHMER

Frontiers of Structural and Civil Engineering 2019, Volume 13, Issue 4,   Pages 852-862 doi: 10.1007/s11709-019-0522-x

Abstract: focus of this paper is on the non-probabilistic-based design of new arch-type dams by applying means of robustAs a result, robust and reliable designs are obtained and the result is independent from any assumptionsThe optimization of an arch-type dam is realized here by a robust optimization method under load uncertaintyminimum objective value and offers a solution candidate close to limit-states, the RDO method provides a robustBy this means, the robust design can generate an improved arch dam structure that ensures both safety

Keywords: arch dam     shape optimization     robust optimization     load uncertainty     approximation model    

Reliability-based robust design optimization of vehicle components, Part I: Theory

Yimin ZHANG

Frontiers of Mechanical Engineering 2015, Volume 10, Issue 2,   Pages 138-144 doi: 10.1007/s11465-015-0333-2

Abstract:

The reliability-based design optimization, the reliability sensitivity analysis and robust designmethod are employed to present a practical and effective approach for reliability-based robust designA procedure for reliability-based robust design optimization of vehicle components is proposed.Application of the method is illustrated by reliability-based robust design optimization of axle andNumerical results have shown that the proposed method can be trusted to perform reliability-based robust

Keywords: reliability-based design optimization     reliability-based sensitivity analysis     multi-objective optimization     robust    

Analytical approach to robust design of nonlinear mechanical systems

Jian ZHANG, Nengsheng BAO, Guojun ZHANG, Peihua GU

Frontiers of Mechanical Engineering 2009, Volume 4, Issue 2,   Pages 203-214 doi: 10.1007/s11465-009-0022-0

Abstract: Their effects must be understood for designing robust systems.With this model, the sensitivity of systems was analyzed to formulate a system sensitivity index and robustBased on the robust design principle, an optimization model was developed.Combining this optimization model and the Taguchi method for robust design, an analysis was carried out

Keywords: robust     design     nonlinear    

Reliability-based robust design optimization of vehicle components, Part II: Case studies

Yimin ZHANG

Frontiers of Mechanical Engineering 2015, Volume 10, Issue 2,   Pages 145-153 doi: 10.1007/s11465-015-0334-1

Abstract:

The reliability-based optimization, the reliability-based sensitivity analysis and robust design methodare employed to propose an effective approach for reliability-based robust design optimization of vehicleApplications of the method are further discussed for reliability-based robust optimization of vehicleResults have shown the proposed method is an efficient method for reliability-based robust design optimization

Keywords: reliability-based design optimization     reliability-based sensitivity analysis     multi-objective optimization     robust    

Two-stage stochastic programming with robust constraints for the logistics network post-disruption response

Frontiers of Engineering Management   Pages 67-81 doi: 10.1007/s42524-022-0240-2

Abstract: strategy optimization problem, this study proposes a novel two-stage stochastic programming model with robustobtained, the conditional value at risk (CVaR) criterion is utilized to reduce the operational risk, and robustis further derived by linearizing the CVaR objective function and dualizing the infinite number of robust

Keywords: design     post-disruption response strategy     two-stage stochastic programming     conditional value at risk     robust    

Distributionally robust optimization of home energy management system based on receding horizon optimization

Jidong WANG, Boyu CHEN, Peng LI, Yanbo CHE

Frontiers in Energy 2020, Volume 14, Issue 2,   Pages 254-266 doi: 10.1007/s11708-020-0665-4

Abstract: in home energy management system (HEMS) under uncertain environment by proposing a distributionally robustThe simulation results demonstrate that the scheduling results are robust under uncertain environmentFurthermore, compared with the robust optimization (RO) method, the RHO-DRO method proposed in this paper

Keywords: distributionally robust optimization (DRO)     home energy management system (HEMS)     receding horizon optimization    

Controlling interstory drift ratio profiles via topology optimization strategies

Frontiers of Structural and Civil Engineering 2023, Volume 17, Issue 2,   Pages 165-178 doi: 10.1007/s11709-022-0892-3

Abstract: Two formulations are suggested: one inherits the bound formulation and the other utilizes a p-norm function

Keywords: interstory drift ratio     aggregation function     bound formulation     min–max problem     topology optimization    

Title Author Date Type Operation

Robust isogeometric topology optimization for piezoelectric actuators with uniform manufacturability

Journal Article

Nanocrystal technology for drug formulation and delivery

Tzu-Lan CHANG, Honglei ZHAN, Danni LIANG, Jun F. LIANG

Journal Article

Semi-solid materials for controlled release drug formulation: current status and future prospects

Michelle TRAN,Chun WANG

Journal Article

Implementation of total Lagrangian formulation for the elasto-plastic analysis of plane steel frames

Bing XIA, Yuching WU, Zhanfei HUANG

Journal Article

Pareto lexicographic α-robust approach and its application in robust multi objective assembly line balancing

Ullah SAIF,Zailin GUAN,Baoxi WANG,Jahanzeb MIRZA

Journal Article

Target-oriented robust optimization of a microgrid system investment model

Lanz UY, Patric UY, Jhoenson SIY, Anthony Shun Fung CHIU, Charlle SY

Journal Article

A novel finite element formulation for static bending analysis of functionally graded porous sandwich

Van Chinh NGUYEN; Trung Thanh TRAN; Trung NGUYEN-THOI; Quoc-Hoa PHAM

Journal Article

Robust control of

Xueyan TANG, I-Ming CHEN

Journal Article

Shape design of arch dams under load uncertainties with robust optimization

Fengjie TAN, Tom LAHMER

Journal Article

Reliability-based robust design optimization of vehicle components, Part I: Theory

Yimin ZHANG

Journal Article

Analytical approach to robust design of nonlinear mechanical systems

Jian ZHANG, Nengsheng BAO, Guojun ZHANG, Peihua GU

Journal Article

Reliability-based robust design optimization of vehicle components, Part II: Case studies

Yimin ZHANG

Journal Article

Two-stage stochastic programming with robust constraints for the logistics network post-disruption response

Journal Article

Distributionally robust optimization of home energy management system based on receding horizon optimization

Jidong WANG, Boyu CHEN, Peng LI, Yanbo CHE

Journal Article

Controlling interstory drift ratio profiles via topology optimization strategies

Journal Article