Structural and Multidisciplinary Optimization
Papers 3,619
1 page of 362 pages (3,619 results)
#1Huayuan Feng (SCUT: South China University of Technology)H-Index: 2
#2Wen-Bin Shangguan (SCUT: South China University of Technology)H-Index: 13
The axial friction force (AFF) of drive-shaft systems is mainly caused by friction inside tripod joints. In order to study the influence of the friction on the AFF more deeply, a novel deterministic model for calculating the AFF considering rough surface characteristics (RSC) is established based on the fractal theory. Through measuring the AFF of a drive-shaft system, the deterministic model is verified. After considering RSC, the AFF has considerable uncertainty. Based on Legendre polynomials ...
#1Linyuan Shang (SAU: Shenyang Aerospace University)H-Index: 5
#2Jingjuan Zhai (SAU: Shenyang Aerospace University)H-Index: 4
Last. Guozhong Zhao (DUT: Dalian University of Technology)H-Index: 10
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Sensitivity analysis of coupled acoustic-structural systems under non-stationary random excitations is investigated in this paper. The combined method of direct differentiation method (DDM) and pseudo excitation method (PEM) in previous work is computationally expensive for problems with large-scale design variables. To circumvent this difficulty, a fast sensitivity analysis method integrating the adjoint variable method (AVM) and PEM for coupled acoustic-structural systems under non-stationary ...
#1Zhangli Hu (Missouri University of Science and Technology)H-Index: 3
#2Rami Mansour (KTH: Royal Institute of Technology)H-Index: 6
Last. Xiaoping Du (Purdue University West Lafayette)H-Index: 41
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Second-order reliability methods are commonly used for the computation of reliability, defined as the probability of satisfying an intended function in the presence of uncertainties. These methods can achieve highly accurate reliability predictions owing to a second-order approximation of the limit-state function around the Most Probable Point of failure. Although numerous formulations have been developed, the lack of full-scale comparative studies has led to a dubiety regarding the selection of...
#2Lidan Zhang (Delft University of Technology)
Last. Fred van Keulen (Delft University of Technology)H-Index: 20
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Stiffened shells and plates are widely used in engineering. Their performance is highly influenced by the arrangement, or layout, of stiffeners on the base shell or plate and the geometric features, or topology, of these stiffeners. Moreover, modular design is beneficial, since it allows for increased quality control and mass production. In this work, a method is developed that simultaneously optimizes the topology of stiffeners and their layout on a base shell or plate. This is accomplished by ...
#1Atticus J. Beachy (Wright State University)H-Index: 3
#2Ha-Rok Bae (Wright State University)H-Index: 11
Last. Ramana V. Grandhi (AFIT: Air Force Institute of Technology)H-Index: 41
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In this work, an emulator embedded neural network is proposed for efficient modeling of high-dimensional predictors with multi-fidelity data sources. The emulators represent prior knowledge or expertise implemented intrusively into a neural network in forms of legacy models, physics-based models, surrogate models, etc. In this research, multi-fidelity models are embedded into selected neurons of the hidden layers to accelerate neural network training by leveraging low-fidelity models and reducin...
#1Nam H. Kim (UF: University of Florida)H-Index: 34
#2Nestor V. QueipoH-Index: 19
Last. Ming Zhou (Altair Engineering)H-Index: 21
view all 8 authors...
#1Yekai Sun (Imperial College London)H-Index: 4
#2Enora Denimal (Imperial College London)H-Index: 6
Last. Loic Salles (Imperial College London)H-Index: 15
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Integrally bladed disks (blisk) have been widely used in the turbo-machinery industry due to its high aerodynamic performance and structural efficiency. A friction ring damper is usually integrated in the system to improve its low damping. However, the design of the geometry of this friction ring damper become complex and computationally expensive due to the strong nonlinearities from friction interfaces. In this work, we propose an efficient modelling strategy based on advanced nonlinear modal ...
#1Mariusz Bujny (Honda)H-Index: 6
#2Markus Olhofer (Honda)H-Index: 18
Last. Fabian Duddeck (TUM: Technical University of Munich)H-Index: 13
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#1Sheng Chu (Cardiff University)H-Index: 1
#2Carol Ann Featherston (Cardiff University)H-Index: 16
Last. H. Alicia Kim (UCSD: University of California, San Diego)H-Index: 17
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This paper investigates the weight minimization of stiffened panels simultaneously optimizing sizing, layout, and topology under stress and buckling constraints. An effective topology optimization parameterization is presented using multiple level-set functions. Plate elements are employed to model the stiffened panels. The stiffeners are parametrized by implicit level-set functions. The internal topologies of the stiffeners are optimized as well as their layout. A free-form mesh deformation app...
#1Chao Wang (UIUC: University of Illinois Urbana-Champaign)H-Index: 1
#2Zhi Zhao (UIUC: University of Illinois Urbana-Champaign)H-Index: 1
Last. Xiaojia Shelly Zhang (UIUC: University of Illinois Urbana-Champaign)H-Index: 6
view all 5 authors...
Ever since the publication of the 99-line topology optimization MATLAB code (top99) by Sigmund in 2001, educational articles have emerged as a popular category of contributions within the structural and multidisciplinary optimization (SMO) community. The number of educational papers in the field of SMO has been growing rapidly in recent years. Some educational contributions have made a tremendous impact on both research and education. For example, top99 (Sigmund in Struct Multidisc Optim 21(2):1...
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