The influence of the working load on dynamic loading bolt was investigated in our study for two cases flange joints. analytical calculation according to Verein Deutscher Ingenieure (VDI) 2230 recommendation and numerical analysis using finite element method (FEM) were performed a model four-bolt joint. To verify FEM analysis, forces bolts measured during preloading application test rig. Based r...

this research was carried at the university of reading in 1999. the aim was to estimate the effects of 18 hd-1 (long-day, ld) and 12 hd-1 (short-day, sd) light exposure duration of plants before bolting or flowering on time to bolt and flower in two bolting susceptible (bsg, ic1) and bolting resistant (brg, saxon) genotypes of sugar beet. so, two experiments were conducted. the experiments were...

For tunnel-support engineering, the bed separation of surrounding rock has a great influence on support performance bolts. In order to reveal mechanical properties full-grouted prestressed bolt under separation, three typical working conditions single-separation, multi-separation and different positions were set up, theoretical models numerical established. Furthermore, characteristics axial fo...

We examine the thermodynamics of Euclidean dyonic Taub-NUT/Bolt-AdS4 black holes for a variety horizon geometries to understand how gauge field regularity conditions influence thermodynamic relations. find several distinct features that distinguish NUT-charged case from its Reissner-Nordstrom counterpart. For NUT solution, vanishes at and so is ensured. Bolt solution we norm required vanish in ...

In this paper, taking a typical roadway in broken and soft rock strata No. 10 Mine of Pingdingshan coal field as an example, the deformation failure mechanism mass was deeply analyzed based on testing. Then technology high-strength prestressed bolt-grouting support, such new combined grouting bolt, hollow anchor cable, were developed. Based this, repair support scheme using designed for on-site...

This study presents findings for the strength and failure mechanism of a 3D-printed Continuous Carbon Fibre reinforced Onyx (CCF/Onyx) Thermo-Plastic Composite Fastener (TPCF) single lap-joint (SLJ) made fibre/polymer composite by TPCF. The was carried out numerical analysis experiment methods including test sample design, manufacturing process mechanical test. fasteners were manufactured teste...

Information on reactions of delphinids to biopsy sampling and healing of associated biopsy wounds is limited. Results presented here report on the behavioral responses of free-ranging bottlenose dolphins (Tursiops truncatus) to remote biopsy sampling procedures, and provide information on stages of surgical biopsy wound repair. Biopsy samples of free-ranging dolphins were collected between Febr...