This study describes the structural response of historic lighthouses to extreme wave impacts. Located offshore on exposed rocks, 19th Century were built with large interlocked granite blocks and have survived weathering for nearly two centuries. Under impacts, this typology may uplift rock, whereas sliding is prevented by vertical interlocking. The thresholds calculated limit analysis method re...

The stress field is a critical factor for fracture propagation in hydraulic fracturing. Attention should be paid to with the nonuniform field. A gradient was established investigate influence of nononuniform on propagation. Based three-dimensional block distinct element model law obtained. mechanism and magnitude uneven revealed. Aiming at propagation, elastic modulus construction parameters an...

This paper aims to study the mechanical behaviour and failure mechanism of intact rocks under different loading conditions using the grain based model implemented in the universal distinct element code (UDEC). The grain based numerical model is a powerful tool to investigate complicated micro-structural mechanical behaviour of rocks. In the UDEC grain based model, the intact material is simulat...

introduction: with the rapid increase in use of lasers in medical treatments, it is important to understand the mechanisms of heat transfer in biological tissues in order to minimize damage to the tissues resulting from extra heat applied. the aim of this study is to investigate the temperature distribution in living biological tissues when laser irradiation is used in a treatment. methods:  in...

objective: intrusion as a type of tooth movement is managed by different mechanotherapies during various treatment stages. the morphology of the apical third of the teeth to be intruded plays an important role in the risk of root resorption due to the raise of stresses. the main goal of this study was to compare various types of apical third of the teeth while loaded by an intrusive force. mate...

during the design and development of truck cabins, the safety of the driver and the front seat passenger in an accident is an important task and should be considered. the cab must be designed in such a way that in an accident a sufficient survival space is guaranteed. the aim of this study is to investigate the behavior of iran khodro (ikco) 2624 truck subjected to a complex crash test accordin...