一种微重力下洗衣装置的设计与研究
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摘要
针对载人航天特定环境下的洗衣需求,设计了一款微重力环境下可用的洗衣装置,该洗衣装置采用了硅胶柔性袋容纳衣物,由凸包夹持提供挤压力,由齿轮结构驱动。为研究该装置的洗涤力度,建立了基于光滑粒子动力学法(SPH)与有限元法(FEM)耦合的流固耦合模型。基于该仿真模型和经验公式进行了优化设计,优化后柔性袋容纳50%内容物时能达到当前滚筒洗净标准,容纳96%内容物时需增加1/5倍洗涤时长,能达到当前滚筒洗净标准。
To satisfy the specific environment demand on laundry in manned space flight, a new type of washing device used in microgravity was designed. Soft silicon rubber washing bag was adopted in the newly designed washing device. It was clamped by bumps and motivated by steering gear rack. A simulation model based on smoothed particle hydrodynamics(SPH) and finite element method(FEM) was established to investigate the washing force of the machine. After optimization, the machine with 50% volume occupied could reach the cleaning ability of the current drum washing machine, while with 96% volume occupied an extra 1/5 washing time would be needed.
To satisfy the specific environment demand on laundry in manned space flight, a new type of washing device used in microgravity was designed. Soft silicon rubber washing bag was adopted in the newly designed washing device. It was clamped by bumps and motivated by steering gear rack. A simulation model based on smoothed particle hydrodynamics(SPH) and finite element method(FEM) was established to investigate the washing force of the machine. After optimization, the machine with 50% volume occupied could reach the cleaning ability of the current drum washing machine, while with 96% volume occupied an extra 1/5 washing time would be needed.
引文
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[3] Attaway S W,Heinstein W M,Mello F J,et al.Coupling of smooth particle hydro-dynamics with PRONTO[C]//1993 ASME Winter Annual Meeting,New Orleans,1993.
[4] Attaway S W,Heinstein W M,Mello F J.Coupling of smooth particle hydrodynamics with finite element method [J].Nuclear Engineering and Design,1994,150:199-205.
[5] Sonia F,Javier B,Antonio H.Continuous blending of SPH with finite elements[J].Computer & Structures,2005,83:1448-1458.
[6] 马利,陶伟明,郭乙木,等.SPH耦合有限元方法的水射流弹塑性碰撞模拟[J].浙江大学学报,2008,42(2):259-263.Ma L,Tao W M,Guo Y M,et al.Elastic/plastic impact simulation of water jet using smoothed particle hydrodynamics and finite element method[J].Journal of Zhejiang University,2008,42(2):259-263.(in Chinese)
[7] 肖毅华,韩旭,胡德安.流体与结构相互作用问题的FE-SPH耦合模拟[J].应用力学学报,2011,28(1):13-18.Xiao Y H,Han X,Hu D A.FE-SPH coupling simulation of fluid-structure interaction problems[J].Chinese Journal of Applied Mechanics,2011,28(1):13-18.(in Chinese)
[8] 孙芳锦,张大明.基于光滑粒子流体动力学的流固耦合问题研究[J].地震工程与工程振动,2013,33(6):222-227.Sun F J,Zhang D M.Study on fluid-structure interaction based on smoothed particle hydro-dynamics[J].Journal of Earthquake Engineering and Engineering Vibration,2013,33(6):222-227.(in Chinese)
[2] 王勖成.有限单元法[M].北京:清华大学出版社,2003:468-520.Wang X C.Finite Element Method[M].Beijing:Tshinghua University Press,2003:468-520.(in Chinese)
[3] Attaway S W,Heinstein W M,Mello F J,et al.Coupling of smooth particle hydro-dynamics with PRONTO[C]//1993 ASME Winter Annual Meeting,New Orleans,1993.
[4] Attaway S W,Heinstein W M,Mello F J.Coupling of smooth particle hydrodynamics with finite element method [J].Nuclear Engineering and Design,1994,150:199-205.
[5] Sonia F,Javier B,Antonio H.Continuous blending of SPH with finite elements[J].Computer & Structures,2005,83:1448-1458.
[6] 马利,陶伟明,郭乙木,等.SPH耦合有限元方法的水射流弹塑性碰撞模拟[J].浙江大学学报,2008,42(2):259-263.Ma L,Tao W M,Guo Y M,et al.Elastic/plastic impact simulation of water jet using smoothed particle hydrodynamics and finite element method[J].Journal of Zhejiang University,2008,42(2):259-263.(in Chinese)
[7] 肖毅华,韩旭,胡德安.流体与结构相互作用问题的FE-SPH耦合模拟[J].应用力学学报,2011,28(1):13-18.Xiao Y H,Han X,Hu D A.FE-SPH coupling simulation of fluid-structure interaction problems[J].Chinese Journal of Applied Mechanics,2011,28(1):13-18.(in Chinese)
[8] 孙芳锦,张大明.基于光滑粒子流体动力学的流固耦合问题研究[J].地震工程与工程振动,2013,33(6):222-227.Sun F J,Zhang D M.Study on fluid-structure interaction based on smoothed particle hydro-dynamics[J].Journal of Earthquake Engineering and Engineering Vibration,2013,33(6):222-227.(in Chinese)