Getting The Most Out Of Computer Aided Engineering (CAE) For Under-Hood Applications Using High Performance Engineering Polymers (HPEP)

Author(s):  
Kirit C. Desai
2018 ◽  
Vol 170 ◽  
pp. 01115 ◽  
Author(s):  
Alexander Kolbasin ◽  
Oksana Husu

In modern industrial production some of the major factors of successful development include: cost reduction of the production, im-provement of its quality, as well as help to minimise the time in market en-try. Computer-aided design and Computer-aided engineering (CAD / CAE - systems) are the most effective for implementation of these requirements. Possible use of this engineering modeling simulation in conjunction with the power and speed of high performance computing could reduce costs and time of each cycle of designing, and also significantly reduce devel-opment time. The introduction of new technologies, the use of high quality products and engagement of qualified personnel would allow businesses and organizations to get on a path of innovative development of design and production systems.


2018 ◽  
Vol 38 (4) ◽  
pp. 363-370 ◽  
Author(s):  
Jingfu Song ◽  
Gai Zhao ◽  
Qingjun Ding ◽  
Jinhao Qiu

AbstractHigh-performance engineering polymers are a potential frictional material candidate for mechanical systems with moving parts, especially at high load and speed conditions. In this study, reciprocating friction and wear of aramid fibers/polyimide composites filled with graphite, MoS2or Polytetrafluoroethylene, respectively, were systematically investigated on a Pin-on-Flat test rig. The experimental setup was simplified into friction materials reciprocating against a phosphor bronze pin to simulate the rotor/stator contact state in ultrasonic motors. A comparative study on friction reduction and wear resistance of polyimide composites indicated that graphite showed the best lubricity with low friction coefficient and wear rate. Experimental results of pressure time average velocity measurements showed that frequencies ranging from 3 to 11 Hz played a significant role on the friction coefficient variations of these porous polyimide composites, whereas increasing pressure from 4 to 6 MPa had little effect on friction reduction. Then, the microstructure of the worn surface of the three different materials was observed by scanning electron microscope to reveal the wear mechanisms. This study is expected to provide a good guidance for porous polyimide composites application in ultrasonic motors.


2005 ◽  
Vol os-14 (2) ◽  
pp. 1558925005os-14
Author(s):  
Ron (Rongguo) Zhao

Polyoxymethylene (POM) copolymer is one of the relatively new, high performance engineering polymers. Its high crystallinity provides this polymer with excellent properties, including great tensile strength and stiffness, high toughness, good resilience, and low surface friction. POM also possesses excellent chemical resistance to a wide range of materials, comparing favorably with many thermoplastic polymers. Fine fibered products of POM may find applications in specialty filtration, such as hydrocarbon fuel filtration, and hydraulic fluid filtration. This paper discusses the melt blowing process for POM with an emphasis on the effects of spinnerette setting on the fiber property. It also discusses the relationship of process/web properties for this specific polymer and compares it with that of PP in terms of processability.


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