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You searched for id:"oai:tigerprints.clemson.edu:all_theses-4162". One record found.

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Clemson University

1. Betsill, Blake. Using Origami Folding Techniques to Study the Effect of Non-Linear Stiffness on the Performance of Jumping Mechanism.

Degree: MS, Mechanical Engineering, 2019, Clemson University

This research uses Origami patterns and folding techniques to generate non-linear force displacement profiles and study their effect on jumping mechanisms. In this case, the jumping mechanism is comprised of two masses connected by a Tachi-Miura Polyhedron (TMP) with non-linear stiffness characteristics under tensile and compressive loads. The strain-softening behavior exhibited by the TMP enables us to optimize the design of the structure for improved jumping performance. I derive the equations of motion of the jumping process for the given mechanism and combine them with the kinematics of the TMP structure to obtain numerical solutions for the optimum design. The results correlate to given geometric configurations for the TMP that result in the two optimum objectives: The maximum time spent in the air and maximum clearance off the ground. I then physically manufacture the design and conduct compression tests to measure the force-displacement response and confirm it with the theoretical approach based on the kinematics. Experimental data from the compression tests show a hysteresis problem where the force-displacement profile exhibits different behavior whether the structure is being compressed or released. I investigate two methods to nullify the hysteresis when compressing or releasing the mechanism and then discuss their results. This research can lead to easily manufacturable jumping robotic mechanisms with improved energy storage and jumping performance. Additionally, I learn more about how to use origami techniques to harness unique stiffness properties and apply them to a variety of scenarios. Advisors/Committee Members: Suyi Li, Committee Chair, Todd Schweisinger, Phanindra Tallapragada.

Subjects/Keywords: Dynamics; Jumping Mechanism; Non-linear; Optimization; Origami

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6th Edition):

Betsill, B. (2019). Using Origami Folding Techniques to Study the Effect of Non-Linear Stiffness on the Performance of Jumping Mechanism. (Masters Thesis). Clemson University. Retrieved from https://tigerprints.clemson.edu/all_theses/3155

Chicago Manual of Style (16th Edition):

Betsill, Blake. “Using Origami Folding Techniques to Study the Effect of Non-Linear Stiffness on the Performance of Jumping Mechanism.” 2019. Masters Thesis, Clemson University. Accessed September 21, 2019. https://tigerprints.clemson.edu/all_theses/3155.

MLA Handbook (7th Edition):

Betsill, Blake. “Using Origami Folding Techniques to Study the Effect of Non-Linear Stiffness on the Performance of Jumping Mechanism.” 2019. Web. 21 Sep 2019.

Vancouver:

Betsill B. Using Origami Folding Techniques to Study the Effect of Non-Linear Stiffness on the Performance of Jumping Mechanism. [Internet] [Masters thesis]. Clemson University; 2019. [cited 2019 Sep 21]. Available from: https://tigerprints.clemson.edu/all_theses/3155.

Council of Science Editors:

Betsill B. Using Origami Folding Techniques to Study the Effect of Non-Linear Stiffness on the Performance of Jumping Mechanism. [Masters Thesis]. Clemson University; 2019. Available from: https://tigerprints.clemson.edu/all_theses/3155

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