| 1 | Thermoelastic Structural Topology Optimization Based on Moving Morphable Components Framework显示文摘This study investigates structural topology optimization of thermoelastic structures considering two kinds of objectives ofminimumstructural compliance and elastic strain energy with a specified available volume constraint.To explicitly express the configuration evolution in the structural topology optimization under combination of mechanical and thermal load conditions,the moving morphable components(MMC)framework is adopted.Based on the characteristics of the MMC framework,the number of design variables can be reduced substantially.Corresponding optimization formulation in the MMC topology optimization framework and numerical solution procedures are developed for several numerical examples.Different optimization results are obtained with structural compliance and elastic strain energy as objectives,respectively,for thermoelastic problems.The effectiveness of the proposed optimization formulation is validated by the numerical examples.It is revealed that for the optimization design of the thermoelastic structural strength,the objective function with the minimum structural strain energy can achieve a better performance than that from structural compliance design. | Jun Yan Qi Xu Zhirui Fan Zunyi Duan Hongze Du Dongling Geng | 2021 | Computer Modeling in Engineering & Sciences2021，，9： | 0 |
| 2 | A triboelectric nanogenerator based oncosmetic fixing powder for mechanicalenergy harvesting显示文摘In this work,we use commercial powder particulates(a cosmetic fixing powder)as triboelectric materials for constructing a triboelectric nanogenerator(CFP-TENG).Through finger pressing,the CFP-TENG generated approximate open-circuit voltage,short-circuit current,and maximum power density values of 1141 V,521μA,and 570.96μW/cm^(2),respectively.Thirty-seven commercial blue LEDs can be easily lit up by the CFP-TENG.Moreover,this TENG,which was designed as a novel palette structure for harvesting mechanical energy from bicycle motion,serves as a self-powered bicycle speed sensor.In addition,the cosmetic fixing powder can be used as an effective material to enhance the triboelectric property of skin.This study provides an effective method for developing a cost-effective TENG without the use of complex surface micro-/nano-texturing. | Kequan Xia Yue Chi Jiangming Fu Zhiyuan Zhu Hongze Zhang Chaolin Du Zhiwei Xu | 2019 | Microsystems & Nanoengineering2019，5，1： | 0 |
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