A review of optimization of structures subjected to transient loads

Kang, Bongkoo; Park, Gyung-Jin; Arora, Jasbir S.

doi:10.1007/s00158-005-0575-4

Cited by 183 publications

(70 citation statements)

References 117 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Since special treatments are required, the technology is rarely applied to large-scale structures. (8) Instead, static response optimization is carried out. Therefore, static loads, which approximate dynamic loads, have been used in structural optimization of the joined-wing.…”

Section: Gallman Andmentioning

confidence: 99%

See 1 more Smart Citation

Structural Optimization Using the Equivalent Load Concept

Park¹

2005

Self Cite

View full text Add to dashboard Cite

Public reporting burden for the collection of information is estimated to average 1 hour per response, including the time for reviewing instructions, searching existing data sources, gathering and maintaining the data needed, and completing and reviewing the collection of information. Send comments regarding this burden estimate or any other aspect of this collection of information, including suggestions for reducing this burden, to Washington Headquarters Services, Directorate for Information Operations and Reports, 1215 Jefferson Davis Highway, Suite 1204, Arlington VA 22202-4302. Respondents should be aware that notwithstanding any other provision of law, no person shall be subject to a penalty for failing to comply with a collection of information if it does not display a currently valid OMB control number. The joined-wing is a new concept of the airplane wing. The fore-wing and the aft-wing are joined together in a joined-wing. The range and loiter are longer than those of a conventional wing. The joined-wing can lead to increased aerodynamic performance and reduction of the structural weight. In this research, dynamic response optimization of a joined-wing is carried out by using equivalent static loads. Equivalent static loads are made to generate the same displacement field as the one from dynamic loads at each time step of dynamic analysis. The gust loads are considered as critical loading conditions and they dynamically act on the structure of the aircraft. It is difficult to identify the exact gust load profile. Therefore, the dynamic loads are assumed to be (1-cosine) function. Static response optimization is performed for the two cases. One uses the same design variable definition as dynamic response optimization. The other uses the thicknesses of all elements as design variables.

show abstract

Section: Gallman Andmentioning

confidence: 99%

“…The loads are utilized as multiple loading conditions in structural optimization. (8)(9)(10)(11)(12)(13)(14)(15)(16) Size optimization is performed to reduce the structural mass while design conditions are satisfied. Existing static loading conditions are utilized.…”

Section: Gallman Andmentioning

confidence: 99%

Structural Optimization Using the Equivalent Load Concept

Park¹

2005

Self Cite

View full text Add to dashboard Cite

show abstract

“…One has to remember that contrary to static optimization, dealing with optimal design of structures subjected to dynamic loading, one needs to either solve transient response of the structures under consideration or transform dynamic loading into equivalent quasi-static ones [29]. Fortunately, it turns out that the appropriate formulation of optimal design of dynamically loaded structures i.e.…”

Section: Introductionmentioning

confidence: 99%

Modal Approximation Based Optimal Design of Dynamically Loaded Plastic Structures

Błachowski

Tauzowski

Lógó

2017

Period. Polytech. Civil Eng.

View full text Add to dashboard Cite

show abstract

“…However, many algorithms have been developed to calculate dynamic response first derivatives with respect to design variables (also called sensitivity analysis [5][6][7][8][9][10][11][12]). Today, the gradient-based algorithms are the mainstream pattern [13] to solve the optimization problem of structures subjected to transient loads. Much research [14][15][16][17] has been done to solve the structural dynamic response optimization problem with the gradient-based algorithms.…”

Section: Introductionmentioning

confidence: 99%

Optimization Design of Structures Subjected to Transient Loads Using First and Second Derivatives of Dynamic Displacement and Stress

Liu

Zhang

Yan

2012

Shock and Vibration

View full text Add to dashboard Cite

Abstract. This paper developed an effective optimization method, i.e., gradient-Hessian matrix-based method or second order method, of frame structures subjected to the transient loads. An algorithm of first and second derivatives of dynamic displacement and stress with respect to design variables is formulated based on the Newmark method. The inequality time-dependent constraint problem is converted into a sequence of appropriately formed time-independent unconstrained problems using the integral interior point penalty function method. The gradient and Hessian matrixes of the integral interior point penalty functions are also computed. Then the Marquardt's method is employed to solve unconstrained problems. The numerical results show that the optimal design method proposed in this paper can obtain the local optimum design of frame structures and sometimes is more efficient than the augmented Lagrange multiplier method.

show abstract

A review of optimization of structures subjected to transient loads

Cited by 183 publications

References 117 publications

Structural Optimization Using the Equivalent Load Concept

Structural Optimization Using the Equivalent Load Concept

Modal Approximation Based Optimal Design of Dynamically Loaded Plastic Structures

Optimization Design of Structures Subjected to Transient Loads Using First and Second Derivatives of Dynamic Displacement and Stress

Contact Info

Product

Resources

About