At first you think 'maybe the sunlight hit something',until you realize that you’re being flung through the undergrounds of Beijing,subway cart screeching as it bends around another wormhole,and you grapple w...At first you think 'maybe the sunlight hit something',until you realize that you’re being flung through the undergrounds of Beijing,subway cart screeching as it bends around another wormhole,and you grapple with the knowledge (and your balance) that the flash of light didn’t glint from that shining beacon in the sky,but rather a more than obvious smartphone being focused on you by a more than obvious hand.展开更多
The snap fit is a common mechanical mechanism.We have studied the spherical snap fit carefully for its physical asymmetry,which is easy to assemble but difficult to disassemble.Because of the complexity of spherical s...The snap fit is a common mechanical mechanism.We have studied the spherical snap fit carefully for its physical asymmetry,which is easy to assemble but difficult to disassemble.Because of the complexity of spherical snap fit,it is difficult to get a theoretical formula to describe its physical asymmetry.In this paper,the pushing assembly and pulling disassembly of spherical snap fit are studied by both finite element analysis and experiments.The theoretical formulaes of spherical snap fit have been obtained based on numerical simulations and theoretical results of cylindrical snap fit.展开更多
文摘At first you think 'maybe the sunlight hit something',until you realize that you’re being flung through the undergrounds of Beijing,subway cart screeching as it bends around another wormhole,and you grapple with the knowledge (and your balance) that the flash of light didn’t glint from that shining beacon in the sky,but rather a more than obvious smartphone being focused on you by a more than obvious hand.
基金the financial support from Xi’an University of Architecture and Technology(Project No.002/2040221134)。
文摘The snap fit is a common mechanical mechanism.We have studied the spherical snap fit carefully for its physical asymmetry,which is easy to assemble but difficult to disassemble.Because of the complexity of spherical snap fit,it is difficult to get a theoretical formula to describe its physical asymmetry.In this paper,the pushing assembly and pulling disassembly of spherical snap fit are studied by both finite element analysis and experiments.The theoretical formulaes of spherical snap fit have been obtained based on numerical simulations and theoretical results of cylindrical snap fit.