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Creators/Authors contains: "Avila, Alex"

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  1. ; ; ; (, Journal of Mechanical Design)
    null (Ed.)
    Abstract In many origami-based applications, a device needs to be maintained in one or more fold states. The origami stability integration method (OSIM) presented in this paper provides an approach for graphically combining various techniques to achieve stability. Existing stability techniques are also categorized into four groups based on whether they are intrinsic or extrinsic to the origami pattern and whether they exhibit gradual or non-gradual energy storage behaviors. These categorizations can help designers select appropriate techniques for their application. The paper also contains design considerations and resources for achieving stability. Finally, two case studies are presented which use the OSIM and the technique categorization to conceptualize stability in origami-based devices. 
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  2. ; ; ; (, Proceedings of the 2019 International Design Engineering Conferences)
    Abstract In many origami-based applications a device needs to be maintained in one or more fold states. The origami stability integration method (OSIM) presented in this paper provides an approach for graphically combining various techniques to achieve stability. Techniques are divided into four groups based on whether they are intrinsic or extrinsic to the origami pattern and whether they exhibit differentiable or non-differentiable energy storage behaviors. These categorizations can help designers select appropriate techniques for their application. The paper also contains design considerations and resources for several intrinsic techniques. Finally, two case studies are presented which use the OSIM and the technique guidelines to conceptualize stability in origami-based devices. 
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  3. ; ; ; ; (, Proceedings of the 2019 International Design Engineering Conference)
    Abstract Stopping origami in arbitrary fold states can present a challenge for origami-based design. In this paper two categories of kirigami-based models are presented for stopping the fold motion of individual creases using deployable hard stops. These models are transcrease (across a crease) and deploy from a flat sheet. The first category is planar and has behavior similar to a four-bar linkage. The second category is spherical and behaves like a degree-4 origami vertex. These models are based on the zero-thickness assumption of paper and can be applied to origami patterns made from thin materials, limiting the motion of the base origami pattern through self-interference within the original facets. Model parameters are based on a desired fold or dihedral angle, as well as facet dimensions. Examples show model benefits and limitations. 
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