Fatigue-resistance topology optimization of continuum structure by penalizing the cumulative fatigue damage

Chen, Zhuo; Long, Kai; Wen, Pin; Saeed, Nouman

doi:10.1016/j.advengsoft.2020.102924

Cited by 43 publications

(10 citation statements)

References 49 publications

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“…These four structures are all less than 122.73%, demonstrating the structure-material integrated design framework's effectiveness when designing the spacecraft rib. However, considering the aircraft's actual service situation, when designing the spacecraft rib, it is necessary to consider further the constraints of fatigue, aerodynamic load, and uncertainty [32][33][34] in the future study.…”

Section: Discussionmentioning

confidence: 99%

Structure-material Integrated Design for a Spacecraft Rib

Chen¹,

Chen²,

Li³

et al. 2020

AJMME

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It is the goal that the aerospace industry has been continuously pursuing to meet the lightweight design with excellent mechanical properties. A structure-material integrated design framework is proposed to enhance the load-bearing rate of a spacecraft rib significantly, based on the optimization design theory. The structure-material integrated design framework is realized in two steps by commercial software Altair Solidthinking Inspire. The first step is that topology optimization is performed to a spacecraft rib at the macroscopic scale, with the minimum mass and the constraints of the additive manufacturing process and stress; while the second step is to optimally infill the lattice structure at the microscopic scale by minimizing the mass and constraining the additive manufacturing process and stress. Representative samples for the optimal rib structure are then fabricated by the additive manufacturing technique, and the tensile test is finally carried out to obtained the load-bearing rate for the different samples. The results show that the spacecraft rib's load-bearing rate is increased by 122.73% by the proposed structure-material integrated design framework compared to the traditional one; moreover, it is significantly more efficient than the direct topology optimization and lattice optimization design. The structure-material integrated design framework shown in this study can provide an efficient way to aerospace structures with lightweight and superior mechanical properties.

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Section: Discussionmentioning

confidence: 99%

Structure-material Integrated Design for a Spacecraft Rib

Chen¹,

Chen²,

Li³

et al. 2020

AJMME

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“…The P − M rule had been recommended by the AASHTO LRFD code [37] for the bridge design and was adopted widely in fatigue analysis of the bridge engineering [38][39][40]. The P − M rule can also be chosen as a constraint condition in the structural topological optimization problem [41,42]. It is obvious that the P − M rule does not take the effects of the load history and the load sequence into account.…”

Section: Empirical Fatigue Failure Criteriamentioning

confidence: 99%

Analytical Models of Concrete Fatigue: A State-of-the-Art Review

Wei¹,

Makhloof²,

Ren³

2023

Computer Modeling in Engineering &Amp; Sciences

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Fatigue failure phenomena of the concrete structures under long-term low amplitude loading have attracted more attention. Some structures, such as wind power towers, offshore platforms, and high-speed railways, may resist millions of cycles loading during their intended lives. Over the past century, analytical methods for concrete fatigue are emerging. It is concluded that models for the concrete fatigue calculation can fall into four categories: the empirical model relying on fatigue tests, fatigue crack growth model in fracture mechanics, fatigue damage evolution model based on damage mechanics and advanced machine learning model. In this paper, a detailed review of fatigue computing methodology for concrete is presented, and the characteristics of different types of fatigue models have been stated and discussed.

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“…The clustering method to reduce the number of constraints was discussed, and the sensitivity analysis of fatigue constraints was given. A method for fatigue topology optimization of continuum structures was come up with by Chen et al [8], which used penalty stress to avoid singularity problems and used P-norm to integrate a large number of constraints. This method can limit the maximum fatigue damage and achieve a lightweight design.…”

Section: Introductionmentioning

confidence: 99%

The Fatigue topology optimization of orthotropic materials

Zhang

Wei

et al. 2023

J. Phys.: Conf. Ser.

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Combining with the constitutive relation of orthotropic materials, a fatigue topology optimization model considering orthotropic materials is established based on the Independent Continuous Mapping (ICM) method. It uses the minimum structural mass as the optimization objective, the element fatigue life as the constraint condition, and the criterion method. The fatigue life filtration function, mass filtration function, and stiffness filtration function are introduced to identify whether the material is retained. The effectuality of the method is verified by several numerical examples, and the influence of different filter function coefficients on the results is explored. This paper has some theoretical significance for considering the fatigue properties of orthotropic material components in the conceptual design stage.

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Fatigue-resistance topology optimization of continuum structure by penalizing the cumulative fatigue damage

Cited by 43 publications

References 49 publications

Structure-material Integrated Design for a Spacecraft Rib

Structure-material Integrated Design for a Spacecraft Rib

Analytical Models of Concrete Fatigue: A State-of-the-Art Review

The Fatigue topology optimization of orthotropic materials

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