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The finite element calculation of plastic gear
by：CSSSLD
2021-02-03
Because of the contact point of the gear in ultra-high molecular weight polyethylene injection tooling gears addendum, near steel gear tooth root, therefore, ultra-high molecular weight polyethylene gear tooth root stress is greater than steel gear tooth root stress.
Ultra-high molecular weight polyethylene maximum principal stress of the gear tooth root is not more than 8 mpa, and steel gear tooth root is bigger than the maximum stress of 8 mpa, description of ultra-high molecular weight polyethylene gear tooth root stress significantly small steel gear tooth root stress.
along with the advance of science and technology, new materials, production of gear material is no longer limited to metal materials, has developed into the plastic gears and ceramic gear, etc. For plastic gear of the engineering plastics and a growing number of commonly used mainly phenolic resin, nylon, pom, etc. , in recent years, ultra-high molecular weight polyethylene as a new type of engineering plastics for its superior performance has been gradually aroused people's attention.
because of ultra-high molecular weight polyethylene is viscoelastic body, with consideration of viscoelastic finite element calculation and analysis on time factor to consider when, should be considered for gear speed. Large gear for just this calculation, the pinion gear for ultra-high molecular weight polyethylene. For power transmission with plastic gears, in order to help heat dissipation and improve the transmission power of plastic gear and reducing vibration, etc. , generally using plastic gear and steel gear pair is used.
the domestic and foreign scholars on the application of plastic gears with theory and experiment, materials, etc. , for a lot of research, from the plastic gear transmission efficiency, vibration noise, fatigue life, tooth surface wear, flash moderate body temperature test to plastic gear temperature calculation and the analysis of the failure modes and failure mechanism and the mechanism of viscoelastic hysteresis energy consumption and calculation methods are reported. Engaged in bearing capacity calculation of ultra-high molecular weight polyethylene gear is more has great theoretical significance and application value.
gear is one of the important parts in mechanical transmission, both in terms of gear processing, testing, or both in theory research is broad, is difficult. Given previously in the many aspects of plastic gears have done a lot of research work, and considering the relationship of time. Because of ultra-high molecular weight polyethylene is a kind of polymer, is not in accordance with hooke's law elastomer, but a viscoelastic body.
gear transmission is one of the important transmission is widely applied in mechanical transmission. Gear drive the development of technology and its use is closely related to the development of injection molding processing materials. For gear material, since the original wooden gear, copper, iron, development so far is very widely used steel gears, the gear transmission performance and greatly improve the bearing capacity, has got more and more wide application range, these are inseparable from the improvement and development of the materials used.
mechanics model and the relevant mechanical parameters to the metal of the elastomer is different, so the calculation and analysis of plastic gear, is disposed of in accordance with the mechanical model of the elastomer is obviously unreasonable, should be considered according to the viscoelastic body. ABAQUS software in dealing with the contact, can be the calculated considering two objects in contact. That is to say, can not consider the size of the contact area between contacting surfaces and the distribution of contact area force, only two contact bodies are given respectively and constraints in the total force.
more excellent articles: the lagging of viscoelastic body, directly click.
http://www。 csssld。 cn//html/2016/Info_1219/437。 HTML
nantong on suye's official website: http://www. csssld。 cn//
along with the advance of science and technology, new materials, production of gear material is no longer limited to metal materials, has developed into the plastic gears and ceramic gear, etc. For plastic gear of the engineering plastics and a growing number of commonly used mainly phenolic resin, nylon, pom, etc. , in recent years, ultra-high molecular weight polyethylene as a new type of engineering plastics for its superior performance has been gradually aroused people's attention.
because of ultra-high molecular weight polyethylene is viscoelastic body, with consideration of viscoelastic finite element calculation and analysis on time factor to consider when, should be considered for gear speed. Large gear for just this calculation, the pinion gear for ultra-high molecular weight polyethylene. For power transmission with plastic gears, in order to help heat dissipation and improve the transmission power of plastic gear and reducing vibration, etc. , generally using plastic gear and steel gear pair is used.
the domestic and foreign scholars on the application of plastic gears with theory and experiment, materials, etc. , for a lot of research, from the plastic gear transmission efficiency, vibration noise, fatigue life, tooth surface wear, flash moderate body temperature test to plastic gear temperature calculation and the analysis of the failure modes and failure mechanism and the mechanism of viscoelastic hysteresis energy consumption and calculation methods are reported. Engaged in bearing capacity calculation of ultra-high molecular weight polyethylene gear is more has great theoretical significance and application value.
gear is one of the important parts in mechanical transmission, both in terms of gear processing, testing, or both in theory research is broad, is difficult. Given previously in the many aspects of plastic gears have done a lot of research work, and considering the relationship of time. Because of ultra-high molecular weight polyethylene is a kind of polymer, is not in accordance with hooke's law elastomer, but a viscoelastic body.
gear transmission is one of the important transmission is widely applied in mechanical transmission. Gear drive the development of technology and its use is closely related to the development of injection molding processing materials. For gear material, since the original wooden gear, copper, iron, development so far is very widely used steel gears, the gear transmission performance and greatly improve the bearing capacity, has got more and more wide application range, these are inseparable from the improvement and development of the materials used.
mechanics model and the relevant mechanical parameters to the metal of the elastomer is different, so the calculation and analysis of plastic gear, is disposed of in accordance with the mechanical model of the elastomer is obviously unreasonable, should be considered according to the viscoelastic body. ABAQUS software in dealing with the contact, can be the calculated considering two objects in contact. That is to say, can not consider the size of the contact area between contacting surfaces and the distribution of contact area force, only two contact bodies are given respectively and constraints in the total force.
more excellent articles: the lagging of viscoelastic body, directly click.
http://www。 csssld。 cn//html/2016/Info_1219/437。 HTML
nantong on suye's official website: http://www. csssld。 cn//
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