Topology optimization of thin-walled structures with directional straight stiffeners

Sun, Zhaoyou; Wang, Yaguang; Gao, Zhonghao; Luo, Yangjun

doi:10.1016/j.apm.2022.09.027

Cited by 18 publications

(3 citation statements)

References 40 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Te variable density method is an efcient method for structural topology optimization, the continuum structure is discretized by the fnite element method [11]. Te corresponding relation between the relative density of the element and the elastic modulus of the material is expressed by the density interpolation function of the continuous variable.…”

Section: Materials Interpolation Methodmentioning

confidence: 99%

Dynamic and Static Multiobjective Topology Optimization for Gears of Directional Drill Transmission System

Xiao-hong

Yan

Chen

et al. 2023

Advances in Civil Engineering

View full text Add to dashboard Cite

Aiming at the multiobjective topology optimization design of the structure, this paper proposes a method to establish the comprehensive objective function based on the normalized subobjective of the compromise programming method and to determine the weight coefficient of the subobjective of the comprehensive objective function by the analytic hierarchy process (AHP). By using statistical analysis and modal analysis, the static and dynamic characteristics of the gear can be obtained. The single objective topology optimization is used to reduce the compliance of the gear and elevate the low-order natural frequency, and the frequency weighting method is used to suppress the oscillation phenomenon in the frequency-single-objective optimization. AHP was used to determine the weight coefficient of each subtarget. The compromise programming method is used for multiobjective topology optimization, and the gear design is improved according to the optimization results. By analyzing the improved gear structure, the weight of the optimized gear is reduced by 25.3%. The overall stiffness performance and strength performance are enhanced, and the natural frequencies of each order are improved to different degrees.

show abstract

Section: Materials Interpolation Methodmentioning

confidence: 99%

Dynamic and Static Multiobjective Topology Optimization for Gears of Directional Drill Transmission System

Xiao-hong

Yan

Chen

et al. 2023

Advances in Civil Engineering

View full text Add to dashboard Cite

show abstract

“…Sun et al [30] applied the density method coupled with the integration of the equivalent static loads (ESL) method to enhance the dynamic response topology of a rotating inflatable structure. Sun et al [31] presented an approach for the representation and optimization of the topology of thinwalled structures fitted with directional straighteners. The gradient optimization algorithm combined with design sensitivity analysis can optimize the design of straight ribbed stiffened panels on thinwalled structures.…”

Section: Introductionmentioning

confidence: 99%

Web Layout Design of Large Cavity Structures Based on Topology Optimization

Yang,

Sun,

Jin

2024

CMES

View full text Add to dashboard Cite

Large cavity structures are widely employed in aerospace engineering, such as thin-walled cylinders, blades and wings. Enhancing performance of aerial vehicles while reducing manufacturing costs and fuel consumption has become a focal point for contemporary researchers. Therefore, this paper aims to investigate the topology optimization of large cavity structures as a means to enhance their performance, safety, and efficiency. By using the variable density method, lightweight design is achieved without compromising structural strength. The optimization model considers both concentrated and distributed loads, and utilizes techniques like sensitivity filtering and projection to obtain a robust optimized configuration. The mechanical properties are checked by comparing the stress distribution and displacement of the unoptimized and optimized structures under the same load. The results confirm that the optimized structures exhibit improved mechanical properties, thus offering key insights for engineering lightweight, high-strength large cavity structures.

show abstract

“…Jia et al [12] used topology optimization to design and develop a folding protective cover with a supporting framework, and ultimately proved its impact resistance performance through ballistic experiments. Similarly, Sun et al [13] used topology optimization methods to optimize the design of bracket-type thin-walled structures, obtaining an optimized distribution of easy-to-manufacture reinforcing rib structures. The above studies all applied CAE technology to solve structural problems of bracket-type platforms, providing reference and efficient research ideas and methods for the special functional requirements of this study.…”

Section: Introductionmentioning

confidence: 99%

Research on Scheme Design and Structure Optimization of High Speed and High Precision Vehicle Contour Detection Platform

Zhang,

Bai,

Huang

et al. 2023

AETR

View full text Add to dashboard Cite

To improve road traffic safety and reduce the incidence of unauthorized vehicle modifications, overloading, and oversizing, this study proposed a detection platform structure to support the quick measurement of key dimensions and high-precision reconstruction of local features using the automotive contour size system. Using CAE technology, static and dynamic characteristic analysis was performed on the platform structure, and optimization design was conducted on the column frame and gantry frame separately. The optimized column frame's first-order modal frequency increased by 243% from 5.16 Hz to 17.65 Hz, with an average optimization ratio of 187% for the first six modal frequencies. For the optimized gantry frame, the average optimization ratio of the key node displacement exceeded 46%, with the first-order modal frequency increasing by 13% from 36.43 Hz to 41.33 Hz, and an average optimization ratio of 21% for the first six modal frequencies. Ultimately, the optimized detection platform's key nodes achieved an average optimization ratio of nearly 60%, with the first-order modal frequency increasing by 240% from 5.16 Hz to 17.57 Hz and an average optimization ratio of 185% for the first six modal frequencies. The optimized platform structure provides robust support for the high-speed and high-precision vehicle contour detection system's implementation.

show abstract

Topology optimization of thin-walled structures with directional straight stiffeners

Cited by 18 publications

References 40 publications

Dynamic and Static Multiobjective Topology Optimization for Gears of Directional Drill Transmission System

Dynamic and Static Multiobjective Topology Optimization for Gears of Directional Drill Transmission System

Web Layout Design of Large Cavity Structures Based on Topology Optimization

Research on Scheme Design and Structure Optimization of High Speed and High Precision Vehicle Contour Detection Platform

Contact Info

Product

Resources

About