Heuristic optimization method for cellular structure design of light weight components

Nguyen, Justin J.; Park, Sang-in; Rosen, David W.

doi:10.1007/s12541-013-0144-5

Cited by 107 publications

(47 citation statements)

References 13 publications

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“…26). Lattices and trusses can be incorporated into sandwich structures [360] or used to line external surfaces for increased strength [246]. Furthermore, enclosed lattices can be used as internal support for flexible structures such as inflatable (deployable) wings for unmanned aerial vehicles (UAVs) [197] [198].…”

Section: Lattices Trusses and Cellular Materials For Custom Materialsmentioning

confidence: 99%

“…Past solutions have involved complete solid models of truss structures using geometric modeling kernels such as ACIS [347], algorithms [24][88] [140], and unit cell libraries [16][70] [246] (Fig. 37).…”

Section: Constraints Associated With Cad and Digitalizationmentioning

confidence: 99%

“…37. Example of a unit cell library [246] Researchers are working to overcome CAD and digitalization constraints by developing new data formats that can handle material related information. (For a review, see [333].)…”

Section: Constraints Associated With Cad and Digitalizationmentioning

confidence: 99%

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Design for Additive Manufacturing: Trends, opportunities, considerations, and constraints

et al. 2016

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The past few decades have seen substantial growth in Additive Manufacturing (AM) technologies. However, this growth has mainly been process-driven. The evolution of engineering design to take advantage of the possibilities afforded by AM and to manage the constraints associated with the technology has lagged behind. This paper presents the major opportunities, constraints, and economic considerations for Design for Additive Manufacturing. It explores issues related to design and redesign for direct and indirect AM production. It also highlights key industrial applications, outlines future challenges, and identifies promising directions for research and the exploitation of AM's full potential in industry.Design, Manufacturing, Additive Manufacturing

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Section: Lattices Trusses and Cellular Materials For Custom Materialsmentioning

confidence: 99%

Section: Constraints Associated With Cad and Digitalizationmentioning

confidence: 99%

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Design for Additive Manufacturing: Trends, opportunities, considerations, and constraints

et al. 2016

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“…18 At present, the most common application of topology optimization in lattices is the internal structure optimization in a single lattice cell. 2,19,20 On the other hand, two-step optimizations for lattice structures [21][22][23] have been conducted with the macrostructure optimized first, and then the results are used as inputs or constraints to optimize the single cell to achieve correlation of the two scales. However, the necessary calculations are complex; lattice cell topology may be selected in advance to improve the efficiency.…”

Section: Introductionmentioning

confidence: 99%

Optimal design of three-dimensional non-uniform nylon lattice structures for selective laser sintering manufacturing

Jin

Zhang

2018

Advances in Mechanical Engineering

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As a kind of novel multifunctional structure with three-dimensional pores characterized by low relative density, lattice structures can attain a lightweight design while maintaining high specific mechanical properties in three-dimensional solid structures. Focusing on the challenge of finding the optimal design of lattice structures in the design object, a design and modeling method of non-uniform three-dimensional lattice structures is proposed while ensuring the selective laser sintering manufacturability. Optimization for cell type, cell size, and strut size distribution of lattices is specified with the mechanical properties analyzed and the material model calculated beforehand. The manufacturing constraints are analyzed and expressed in topology optimization and the optimal distribution of topology optimization results is mapped to the strut size distribution of lattice cells. The rapid and automatic computer-aided design modeling of optimized structures is realized by the parametric definition and assembling of lattice components. Finally, the non-uniform structures are successfully manufactured by selective laser sintering and it is shown by means of finite element analysis and experiments that the proposed design approach can improve the mechanical performance compared to the uniform lattice structure under the same weight reduction. And for the design object in this study, body-centered structure with cell size a = 4:5 mm is chosen as the optimal cell type and cell size under the given selective laser sintering manufacturing constraints.

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“…Many scholars have conducted the research on this topic. Nguyen et al [3] presented a heuristic optimization method in combination with additive manufacturing for synthesizing large mesoscale lattice structure of complex shaped parts. Park et al [4] proposed a weight reduction design process of suspension link, which was based on the variation of von-Mises stress contour by substituting an aluminum alloys (A356) having tensile strength of 310 MPa grade instead of STKM11A steels.…”

Section: Introductionmentioning

confidence: 99%

Light-Weight Design Method for Force-Performance-Structure of Complex Structural Part Based Co-operative Optimization

Tan

Wang

et al. 2018

Chin. J. Mech. Eng.

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A light-weight design method of integrated structural topology and size co-optimization for the force-performancestructure of complex structural parts is presented in this paper. Firstly, the supporting function of a complex structural part is built to map the force transmission, where the force exerted areas and constraints are considered as connecting structure and the structural configuration, to determine the part performance as well as the force routines. Then the connecting structure design model, aiming to optimize the static and dynamic performances on connection configuration, is developed, and the optimum design of the characteristic parameters is carried out by means of the collaborative optimization method, namely, the integrated structural topology optimization and size optimization. In this design model, the objective is to maximize the connecting stiffness. Based on the relationship between the force and the structural configuration of a part, the optimal force transmission routine that can meet the performance requirements is obtained using the structural topology optimization technology. Accordingly, the light-weight design of conceptual configuration for complex parts under multi-objective and multi-condition can be realized. Finally, based on the proposed collaborative optimization design method, the optimal performance and optimal structure of the complex parts with light weight are realized, and the reasonable structural unit configuration and size characteristic parameters are obtained. A bed structure of gantry-type machining center is designed by using the proposed light-weight structure design method in this paper, as an illustrative example. The bed after the design optimization is lighter 8% than original one, and the rail deformation is reduced by 5%. Moreover, the lightweight design of the bed is achieved with enhanced performance to show the effectiveness of the proposed method.

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Heuristic optimization method for cellular structure design of light weight components

Cited by 107 publications

References 13 publications

Design for Additive Manufacturing: Trends, opportunities, considerations, and constraints

Design for Additive Manufacturing: Trends, opportunities, considerations, and constraints

Optimal design of three-dimensional non-uniform nylon lattice structures for selective laser sintering manufacturing

Light-Weight Design Method for Force-Performance-Structure of Complex Structural Part Based Co-operative Optimization

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