In order to improve the safety of the battery of satellite side mounting,and prevent the screw from producing excess due to frequent assembly and disassembly,the YS-20 material replacement and structure optimization d...In order to improve the safety of the battery of satellite side mounting,and prevent the screw from producing excess due to frequent assembly and disassembly,the YS-20 material replacement and structure optimization design of the screw body are carried out under the premise of not changing the original tooling.The double⁃shear test of YS-20 bar is carried out,and the ANSYS optimization design module is used to design 7×7×6,a total of 294,calculation cases of D1,D2,T,the three important dimension parameters of screw structure.The actual bearing state of screw composite structure is accurately simulated by using asymmetric contact model.Three comprehensive evaluations are established,and the calculation examples satisfying the conditions are evaluated comprehensively.The final results are T=12.2 mm,D1=16 mm,D2=2 mm.The stress verification and contact analysis are carried out for the final scheme and the bearing state and contact state optimized screw structure are obtained.展开更多
根据压电发电可将振动机械能转化为电能的特点,通过对传统的压电发电结构的改造并结合吊扇自身的特性,采用一种基于悬臂梁结构的新型轮式压电发电方式,设计出可自发电并储能的吊扇。测试结果表明,压电装置的机电耦合系数高,可有效提高...根据压电发电可将振动机械能转化为电能的特点,通过对传统的压电发电结构的改造并结合吊扇自身的特性,采用一种基于悬臂梁结构的新型轮式压电发电方式,设计出可自发电并储能的吊扇。测试结果表明,压电装置的机电耦合系数高,可有效提高吊扇的能量利用效率,32h即可把容量为112 m Ah的镍氢可充电电池充满,能够保证教室、车站或者其他公共场合的低能耗设备的正常工作。展开更多
文摘In order to improve the safety of the battery of satellite side mounting,and prevent the screw from producing excess due to frequent assembly and disassembly,the YS-20 material replacement and structure optimization design of the screw body are carried out under the premise of not changing the original tooling.The double⁃shear test of YS-20 bar is carried out,and the ANSYS optimization design module is used to design 7×7×6,a total of 294,calculation cases of D1,D2,T,the three important dimension parameters of screw structure.The actual bearing state of screw composite structure is accurately simulated by using asymmetric contact model.Three comprehensive evaluations are established,and the calculation examples satisfying the conditions are evaluated comprehensively.The final results are T=12.2 mm,D1=16 mm,D2=2 mm.The stress verification and contact analysis are carried out for the final scheme and the bearing state and contact state optimized screw structure are obtained.
文摘根据压电发电可将振动机械能转化为电能的特点,通过对传统的压电发电结构的改造并结合吊扇自身的特性,采用一种基于悬臂梁结构的新型轮式压电发电方式,设计出可自发电并储能的吊扇。测试结果表明,压电装置的机电耦合系数高,可有效提高吊扇的能量利用效率,32h即可把容量为112 m Ah的镍氢可充电电池充满,能够保证教室、车站或者其他公共场合的低能耗设备的正常工作。
