Assembly of off-road bicycle handlebars with a stem that clamps the handlebar around its circumference would be expected to affect fatigue performance by introducing both assembly stresses and stress concentration. Because the effect of clamping on fatigue performance is unknown and because of the need to insure structural reliability in the stem-handlebar assembly to prevent serious injury, th...

In the process of numerical studies, stress-strain state rock massif around mine working driven at a depth 600 m was determined. The article presents analysis distribution total vertical and horizontal stresses isolines in roof, as well ratio residual strength rocks to initial. influence roof bolting on displacement contour established. Dangerous zones near-contour preparatory were identified. ...

Stress state analysis to casing-cement sheathformation system (CCSFS) is the foundation of the wellbore integrity design and examination. Many elastic mechanic models have been established to calculate the stresses and displacements of CCFS, but all analytical models and most finite element models took no account of the initial loaded state, and ignored the initial stresses and displacements on...

PURPOSES The aim of the study was to assess by means a 3D finite element linear and non-linear analysis mechanical interaction between an implant-supported crown and surrounding tissues. MATERIALS AND METHODS A three-dimensional FEM model was developed. Four different material combinations for the abutment and the core were evaluated: Y-TZP - Y-TZP, Y-TZP - microhybrid composite, T - microhyb...

Piers were important structural members between superstructure and foundation of bridge which designed to transfer resist the vertical loads horizontal (dead load structure, traffic loads, water pressure, ice, wind) foundation. The objective this study was evaluate effect number piers in transverse direction (horizontal distance or spacing) on static dynamic responses for two types bridges stru...

Abstract The breaking features and stress distribution of overlying strata in a steeply dipping coal seam (SDCS) differ significantly from those near-horizontal one. In this study, the laws governing evolution vertical release shear concentration seams with different dip angles are derived via numerical simulation, rock mechanics tests, acoustic emissions, field measurements. Thus, stress-drive...

Due to the high in situ stresses, dynamic disasters occurred frequently Huainan mining area, China. Our understanding of stresses this area is still insufficient. In study, 18 sections two boreholes Xinji No. 1 coalfield were measured using hydraulic fracturing method, and distribution investigated. The relationship between stress geological structure was summarized limitation fault friction st...