Periodical
Deployable Convex Generalized Cylindrical Surfaces Using Torsional Joints
| العنوان: | Deployable Convex Generalized Cylindrical Surfaces Using Torsional Joints |
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| المؤلفون: | Nelson, Todd G., Baldelomar Pinto, Luis M., Bruton, Jared T., Deng, Zhicheng, Nelson, Curtis G., Howell, Larry L. |
| المصدر: | Journal of Mechanisms and Robotics; June 2021, Vol. 13 Issue: 3 p031101-031101, 1p |
| مستخلص: | The ability to deploy a planar surface to a desired convex profile with a simple actuation can enhance foldable or morphing airfoils, deployable antennae and reflectors, and other applications where a specific profile geometry is desired from a planar sheet. A model using a system of rigid links joined by torsional springs of tailorable stiffness is employed to create an approximate curved surface when two opposing tip loads are applied. A system of equations describing the shape of the surface during deployment is developed. The physical implementation of the model uses compliant torsion bars as the torsion springs. A multidimensional optimization algorithm is presented to place joints to minimize the error from the rigid-link approximation and account for additional manufacturing and stress considerations in the torsion bars. A proof is presented to show that equal torsion spring spacing along the horizontal axis of deployed parabolic profiles will result in minimizing the area between the model’s rigid-link approximation and smooth curve. The model is demonstrated through the physical construction of a deployable airfoil surface and a metallic deployable parabolic reflector. |
| قاعدة البيانات: | Supplemental Index |
| تدمد: | 19424302 19424310 |
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| DOI: | 10.1115/1.4049951 |