Sökning: "contact system"
Visar resultat 21 - 25 av 809 avhandlingar innehållade orden contact system.
21. Railway Open System Tribology
Sammanfattning : Tribology in the railway system is of increasing interest in the new railway era due to the demand for higher speed and load capacity. Since railway vehicles operate in an open environment, their performance depends greatly on temperature, humidity and natural and artificial contaminants. LÄS MER
22. Adhesion in the wheel-rail contact
Sammanfattning : To attract more customers and compete with other modes of transportation, railway transport needs to ensure safety, punctuality, high comfort, and low cost; wheel–rail adhesion, i.e., the transmitted tangential force in the longitudinal direction during driving and braking, plays an important role in all these aspects. LÄS MER
23. A Study of an Integrated Safety System for the Protection of Adult Pedestrians from Car Collisions
Sammanfattning : This study aimed to evaluate and improve the performance of a newly developed safety system intended to protect pedestrians during frontal car collisions. This system includes a remote sensor system, a contact sensor, a reversible bumper system (RBS), and a reversible hood (RH). LÄS MER
24. Simulation of contact, friction and wear in gears : a finite element approach
Sammanfattning : In this thesis, resent methods in computational contact mechanics is brought into the process of gear design. The finite element method is used to model two elastic bodies in contact. By defining a contact interface between these two bodies, constitutive laws, regarding normal contact, friction and wear, are included. LÄS MER
25. Too close for comfort : The role of Contact-Dependent growth Inhibition (CDI) in interbacterial competition and cooperation
Sammanfattning : Contact-Dependent growth inhibition (CDI) was discovered in 2005 in the E. coli isolate EC93. Since then our knowledge of CDI systems and their impact on bacterial communities have increased exponentially. LÄS MER