Dynamic analysis and optimization of double-layer tape-spring hinge

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Journal of Vibration and Shock ›› 2016, Vol. 35 ›› Issue (9) : 20-27.

YANG Hui, LIU Rong-qiang, WANG Yan, GUO Hong-wei, TAO Jian-guo

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Abstract

Flexible tape-spring hinges can be folded elastically and are able to self-deploy by releasing stored strain energy with fewer component parts and slight weights. Deploying dynamics behaviors of double-layer tape-spring (DLTS) hinge was optimized for reducing deployment shock angle. A deploying experiment is set up to verify the validation of the numerical models for the double-layer tape-spring hinge. The deployment shock angle and locked time are set as objectives, the thickness of outer and inner layer tape-spring on outer bending direction of the DLTS hinge are set as design variables. The modified non-dominated sorting genetic algorithm is employed to achieve the optimal design of the DLTS hinge. The finite element models for the non-equal thickness optimal design based on numerical method are established and validated the optimization results with relative errors no more than 5.008 %. Compared deployment behaviors between the non-equal thickness optimal design and equal thickness configuration for the DLTS hinge, the deployment shock angle and locked time for the former configuration are reduced by 52.154 % and 29.104 % respectively. The parameter study shows that the deployment shock angle is more sensitive to the outer layer thickness of tape-spring, and the locked time is first decreased and then increased with the thickness greater.

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deployment shock / double-layer tape-spring hinge / dynamic analysis / optimization

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YANG Hui, LIU Rong-qiang, WANG Yan, GUO Hong-wei, TAO Jian-guo. Dynamic analysis and optimization of double-layer tape-spring hinge[J]. Journal of Vibration and Shock, 2016, 35(9): 20-27

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