Architectural design in stretch-formed microtruss composites

Samk, Khaled Abu; Yu, Bosco; Hibbard, G.D.

doi:10.1016/j.compositesa.2012.01.014

Cited by 9 publications

(3 citation statements)

References 32 publications

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“…Coupons were placed in an alternating pin press, where the pin-topin distance was 6.35 mm and the pin diameter was 1.6mm. By applying an alternating sequence of deformation and annealing treatments, the flat perforated sheet was transformed into a threedimensional pyramidal microtruss core [5]. The final architecture had an internal strut angle of 47.5°, and as-fabricated strut dimensions of w f = 0.74mm, t f = 0.66mm, l f = 8.1mm and h f = 5.9mm respectively (see Fig.…”

Section: Methodsmentioning

confidence: 99%

Determining the Co-Efficient of End Constraint of Stretch Formed Microtruss Materials

Venkatesh

Hibbard

2013

AMR

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Microtruss cellular metals are a class of multifunctional materials, composed of a regular arrangement of supporting struts. They can be fabricated by stretching perforated metal sheets out of plane by applying force at strut intersections. Once fabricated, external loads are resolved axially along the struts resulting in stretch dominated deformation, yielding enhanced weight specific strength and stiffness at lower densities compared to conventional metallic foams. Given the slenderness of the struts making up the microtruss architecture, failure often occurs by inelastic buckling and is therefore dependent on the rigidity of the strut end constraints. During column buckling the limiting conditions are pin jointed (k=1) and rigid jointed (k=2), with microtruss struts typically having end constraints intermediate to these boundaries. Experimental and finite element methods were used to determine the value of k in IN600 microtrusses. Because of the non-linear stress-strain behavior of the parent metal, the relative significance of end constraint uncertainty is a function of the strut slenderness ratios and the material in question.

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Section: Methodsmentioning

confidence: 99%

Determining the Co-Efficient of End Constraint of Stretch Formed Microtruss Materials

Venkatesh

Hibbard

2013

AMR

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“…Stretch forming can produce parts with high strength-to-weight ratios, complex geometries, and smooth surfaces [72]. Some examples of stretch-formed products are aircraft skins, car doors, window frames, and boat hulls [73,[79][80][81][82][83]. Stretch forming is a common method in the aerospace industry for creating skin parts.…”

Section: Stretch Formingmentioning

confidence: 99%

“…The stretch-forming processes include a range of techniques designed to meet specific needs and achieve desired results, at it is indicated in Table 3. A common method in the field of scientific research involves the use of stationary gripping jaws while the forming block or die is pushed into the material [75,79,81,151,152]. In tangential stretch forming, both gripping jaws and die can move; this results in a biaxial process [72][73][74]82,153].…”

Section: Stretch Forming As a Computer-aided Manufacturing Processmentioning

confidence: 99%

Machine Learning, Mechatronics, and Stretch Forming: A History of Innovation in Manufacturing Engineering

Grigoras,

Zichil,

Ciubotariu

et al. 2024

Machines

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This review focuses on the complex connections between machine learning, mechatronics, and stretch forming, offering valuable insights that can lay the groundwork for future research. It provides an overview of the origins and fundamentals of these fields, emphasizes notable progress, and explores the influence of these fields on society and industry. Also highlighted is the progress of robotics research and particularities in the field of sheet metal forming and its various applications. This review paper focuses on presenting the latest technological advancements and the integrations of these fields from their beginnings to the present days, providing insights into future research directions.

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Microtruss Composites

Samk¹,

Hibbard²

2019

Architectured Materials in Nature and Engineering

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Architectural design in stretch-formed microtruss composites

Cited by 9 publications

References 32 publications

Determining the Co-Efficient of End Constraint of Stretch Formed Microtruss Materials

Determining the Co-Efficient of End Constraint of Stretch Formed Microtruss Materials

Machine Learning, Mechatronics, and Stretch Forming: A History of Innovation in Manufacturing Engineering

Microtruss Composites

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