نتایج جستجو برای: quasi local ring
تعداد نتایج: 727748 فیلتر نتایج به سال:
Nowadays, tube bonding in vehicles structure is noticeably considered by many researches. In this paper, local tube compression process by a rubber ring has been studied. Firstly, simulation of the process was performed by FEM. Then, experimental test has been carried out to validate the numerical results. Numerical and experimental results were compared showing a good agreement. In the second ...
In this paper, we introduce quasi serializability, a correctness criterion for concurrency control in heterogeneous distributed database systems (HDDBSs). Quasi serializability is a weaker criterion than serializability in that it only controls execution of global transactions. Quasi serializability is suited to HDDBS applications where local concurrency controllers (LeGs) maintain serializabil...
Sealing Performance of the End Fitting of a Marine Unbonded Flexible Pipe under Pressure Penetration
The sealing performance of end fittings is very important for offshore oil and gas pipelines. To investigate the sealing behavior of a ring-shaped wedge seal, global and local numerical models of the ring–pipe interaction have been developed based on the finite-element method. First, the sealing process of the ring under pressure is simulated. Second, a criterion for the penetration of fluid pr...
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