Results 41 to 50 of about 668,450 (168)
Ultrasonic Detection Method for Sealing Performance of Special Thread Tubing
Shiyou jixie, 2021 The size and distribution of contact pressure on the sealing surface of special thread tubing have an important impact on its sealing performance. In this paper, pressure was applied on the double rough surface to simulate the contact process of sealing ...
Han Ting +3 more
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Research on Reciprocating Sealing Performance of Hydraulic Impactor Under Stress Relaxation
Shiyou jixie, 2023 Hydraulic impactors have good application effects in hard formation drilling,but the sealing performance of reciprocating seals under high-temperature and high-pressure conditions has an important influence on the service life of them.Therefore ...
Qi Yue +5 more
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BuildingsFriction pendulum bearings are widely used seismic isolation devices for bridges, with their behavior governed by friction during excitation. Sliding velocity and contact pressure are among the factors that substantially affect the friction coefficient ...
Muzaffer Borekci
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Simulation Study on Sealing Performance of Special Threaded Connector Under Vibration Conditions
Shiyou jixie, 2023 The traditional statics theory cannot effectively explain the sealing failure of special threaded connector caused by pipe string vibration.Therefore,in the paper,based on the theory of energy dissipation,considering the influence of micro contact slip ...
Yu Yang +5 more
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Asian Journal of Surgery, 2017 Background: This study aims to analyze the contact areas and pressure distributions between the femoral head and mortar during normal walking using a three-dimensional finite element model (3D-FEM).
Guangye Wang +3 more
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Refreezing of frictional meltwater behind a sliding ski
FrictionLow friction on snow has been attributed to the formation of a frictional meltwater layer for many years, yet experimental evidence for this mechanism has remained inconsistent.
Michael Hasler +3 more
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Development of a thin and flexible sensor for measurement of triaxial contact-stress distribution
Mechanical Engineering JournalMeasurement of contact pressure and shear stress is crucial in fields like sports engineering and bioengineering. Conventional sensors used for these measurements are often thick and rigid, making them unsuitable for accurate measurements on the contact ...
Renta KASAI +2 more
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Shiyou jixie, 2023 The current evaluation of expandable tubulars focuses on the expansion quality and neglects the friction performance of the expansion cone.Given this,the elastoplastic theoretical derivation is performed to calculate the counteractive surface pressure ...
Wang Xin +5 more
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Patellofemoral contact pressures.
Acta of bioengineering and biomechanics, 2009 A test rig for studying the biomechanical behaviour of post-mortem human knees is built. For loading the quadriceps tendon a special clamping device is constructed, so the forces up to 3000 N could easily be transferred to the tendon. Several post-mortem human knees used in this study are tested to collect data about the general biomechanics of knee ...
Jan, Quintelier +4 more
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Setting Process and Sealing Performance Analysis of Downhole Blowout Preventer
Shiyou jixie, 2021 The downhole blowout preventer(BOP)can be directly set on the overflow source to effectively prevent blowout from occurring. In order to study the setting process and sealing performance of downhole BOP, the ABAQUS software was used to build the finite ...
Yin Huibo
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