This paper aims to study the mechanical behaviour and failure mode of Al 2024-T3 in double-lap bolted joints. To accomplish this, the effect of geometric parameters was investigated in both configurations of single and double fasteners. Using ABAQUS/Standard, a three-dimensional finite element model was developed and verified against the experimental results of the joints loaded in tension. In ...

INTRODUCTION Bolt gun or slaughterer's guns are used in meat industry for "humane killing" of animals. Injuries caused by bolt gun are rare, reported exclusively from central European countries. We report a case of 28 year old male, who accidentally shot himself with a bolt gun to his right thigh. CASE REPORT A 28 years old male presented to our Accident and Emergency department after acciden...

This paper presents an empirical design of the excavation method and support system tunnel 1 Sigli-Aceh toll road, Indonesia, based on rock mass quality Rock Mass Rating (RMR) Japan Society Civil Engineers (JSCE). The results showed that route consisted fair to good calcarenite interlayered by sandstone D II C categories RMR JSCE. Based RMR, recommended for section having is full-face, top head...

To explore the mechanical failure characteristics of bolted joints under different bolt installation angles and effect bolting on shear strength joints, a numerical model structural plane anchoring with was established based improved Pile element, series uniaxial compression tests were carried out to systematically study effects angle bolts. The results show that as increases, peak stress speci...

Split-set bolt is widely used in supporting stope and roadway surrounding rock metal mines. The maximum pull-out force generated by the relative slippage between anchor drill hole can serve as an indicator for assessing its anchoring force, of grouted exhibits certain regularity over time. This test was carried out at different time points after construction split-set using drawing equipment, v...

Close-distance multilayer coal mining is common. Under the condition of extremely close-distance seams, it difficult to control surrounding rock large-span open-off cut roadways in multistress concentration areas. Based on engineering background 23616 roadway Chaili Coal Mine, this paper investigated influence upper close seam stress and deformation lower detail. The effect a high-strength pres...

Typically, complex engineering artifacts are designed by teams who may not all be located in the same building or even city. Additionally, besides having to design a part of an artifact to be consistent with the specification, it must also be consistent with the company’s design standards. The Designers’ Workbench supports designers by checking that their configurations satisfy both physical an...