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Lin Sun, Junchao Li and Haoyu Lin
Earthquakes impact the stability of municipal solid waste (MSW) landfills, especially those with high water levels, and may further lead to disastrous landslides. Numerical analysis offers an efficient and cost-effective way to study the seismic stabilit...
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Daniele Granata, Alberto Savino and Alex Zanotti
The present study aimed to investigate the capability of mid-fidelity aerodynamic solvers in performing a preliminary evaluation of the static and dynamic stability derivatives of aircraft configurations in their design phase. In this work, the mid-fidel...
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Tomasz Goetzendorf-Grabowski and Agnieszka Kwiek
The article presents a study on the influence of aerodynamic model fidelity on dynamic characteristics. The Simulation and Dynamic Stability Analysis (SDSA) package was used to calculate the dynamic characteristics, using both eigenvalues (linearized mod...
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Wenqi Cheng and Baigang Mi
A new high-efficiency method based on a particle swarm optimization and long short-term memory network is proposed in this study to predict the aerodynamic forces in an unsteady state. Based on the predicted aerodynamic forces, the dynamic derivative is ...
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Ziyu Guo, Jing Li, Shaotao Zhu and Yufeng Zhang
The dynamic vibration absorber (DVA) is widely used in engineering models with complex vibration modes. The research on the stability and periodic motions of the DVA model plays an important role in revealing its complex vibration modes and energy transf...
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Qunan Ouyang, Chunfeng Qi, Shipeng Sun, Bing Yan, Wenbo Pan, Yuxin Huang and Jiajie Ma
Floating, pouring, prefabrication, and temporary storage of the immersed tunnel element require mooring inside a harbor or a dock. However, the dynamics of a moored tunnel element in such semi-open waters are rarely studied, and some mechanisms are not w...
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Yongshuai Sun, Anping Lei, Ke Yang and Guihe Wang
Relying on the Beijing-Shijiazhuang Expressway widening project near the impervious wall of a reservoir, this paper uses FLAC3D two-dimensional and three-dimensional numerical simulation methods to establish the whole process model of the impervious wall...
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Lei Li, Guangfeng Li, Nasim Uddin, Limin Tian, Zhibing Zhu, Chong Bai and Chen Shen
As large-span structures, reticulated shells are widely used in large-scale public building and act as emergency shelters in the event of sudden disasters. However, spatial reticulated shells are dynamic-sensitive structures; the effect of the initial st...
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Epameinondas Katsikas, Nikiforos T. Laopodis and Konstantinos Spanos
This paper investigates the dynamic stability of public debt and its solvency condition in the face of crisis periods (1980?2021) in a sample of 11 euro-area countries. The focus is on the feedback loop between the dynamic stability of public debt and in...
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Christoph Brandstetter and Sina Stapelfeldt
The prediction accuracy of aeroelastic stability in fans and compressors depends crucially on the accuracy of the underlying aerodynamic predictions. The prevalent approach in the field solves the unsteady Reynolds-averaged Navier?Stokes equations in the...
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Seongpil Cho, Hyungwon Shim and Young-Shik Kim
The conventional proportional derivative (PD) control algorithm with appropriate gain scheduling is generally applied to a dynamic positioning (DP) system. However, finding appropriate gains through gain scheduling makes the DP system more complicated. A...
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Yanbin Wang, Deli Gao and Chenyu Meng
It is important to accurately assess the interaction between the conductor and the soil to ensure the stability of the subsea wellheads during deepwater drilling. In this paper, numerical simulations were carried out to study the lateral dynamic bearing ...
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Guosheng Li, Huan Xiong, Qi Ren, Xiaoguang Zheng and Libao Wu
Semi-flexible pavement (SFP) is made up of a porous skeleton of asphalt mixture and cement grout. This special structure granted SFP superior strength and durability and made it a promising solution for the paving of heavy trafficked area. This paper per...
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Sung-Wan Kim, Da-Woon Yun, Sung-Jin Chang, Dong-Uk Park and Jae-Bong Park
Numerical model updating using the data measured from the actual structure is required in order to minimize the error between the initial numerical model and the actual structure. Field load tests, which are conducted in order to assess the condition and...
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Ping Hu, Wei Guo and Limin Wei
Modifying weathered argillaceous slate (WAS) to fill the subgrades of high-speed railways not only leads to obvious environmental benefits but also significantly saves natural resources. Previous studies have used several additives together with cement/q...
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Christian Franzmann, Friedrich Leopold and Christian Mundt
An experimental method for the determination of the pitch damping moment coefficient sum ??????+???????
C
m
q
+
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m
a
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in a wind tunnel at transonic and low supersonic Mach numbers is developed. With support interference being a major issue for dynamic...
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Tianlong Lei, Jixin Wang and Zongwei Yao
This study constructs a nonlinear dynamic model of articulated vehicles and a model of hydraulic steering system. The equations of state required for nonlinear vehicle dynamics models, stability analysis models, and corresponding eigenvalue analysis are ...
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Nadhie Juliawan, Hyoung-Seog Chung, Jae-Woo Lee and Sangho Kim
This paper focuses on estimating dynamic stability derivatives using a computational fluid dynamics (CFD)-based force oscillation method, and on separating the coupled dynamic derivatives terms obtained from the method. A transient RANS solver is used to...
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Muhammad Yousaf Bhatti, Sang-Gil Lee and Jae-Hung Han
This paper proposes an approach to analyze the dynamic stability and develop trajectory-tracking controllers for flapping-wing micro air vehicle (FWMAV). A multibody dynamics simulation framework coupled with a modified quasi-steady aerodynamic model was...
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Xin Guo, Hongfei Chen and Xiping Yang
Urban vitality is an important indicator of urban development capacity. Streets? metrics can depict intro-urban fabrics and physiognomy in detail, and thus street vitality affected by street metrics is a concrete manifestation of urban vitality. However,...
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