Thesis Analysis of Threaded Joints in Percussive Drilling

Job title:

Thesis Analysis of Threaded Joints in Percussive Drilling

Company

Epiroc

Job description

Do you want to help us speed up the shift towards a more sustainable mining and construction industry? By doing your thesis in collaboration with Epiroc you will get the chance to be a part of this journey.You will work together with experienced and helpful colleagues in an atmosphere characterized by creativity, innovation, and workplace diversity. In your specific project you have the chance to be a part of a challenging and educational experience while growing both professionally and personally.Education Background:
Mechanical EngineeringLevel of Thesis Project:
Master’s ThesisNumber of Students in the Project:
TwoTarget:
The thesis work aims to contribute to the understanding of the physics of threaded joints subjected to both longitudinal and rotational high-dynamic wave propagation during percussive drilling. Methods for performing efficient analyses should be investigated. The results will guide modeling methods during the development of rock drill percussion, dampers, and rotation systems.Background:
Simulations of percussive drilling are regularly used in product development. Hydraulic, pneumatic, and mechanical simulations-especially for longitudinal and torsional wave propagation-are performed with high precision. Simulation libraries of components useful for rock drill design are continuously developed.Mission:
Rotational wave propagation is essential for developing the rotation system, which includes rods, threaded joints, gearboxes, hydraulic motors, and the supply system. At the interface between the drill bit and rock, during rock breaking, the percussive longitudinal load affects rotation resistance and may even cause the drill bit to stop rotating. The threaded joints in the drill string are carefully designed to withstand extreme loads without rattling, while still being relatively easy to unthread. In this thesis work, analysis methods should be investigated. 3D models of specific load cases and co-simulations using 3D and 2D (Hopsan models) for continuous drilling analysis should be performed. If possible, a simplified Hopsan library component model of threaded joints can be created. Verifying measurements will be conducted, adding extra credibility to the thesis.Qualifications:
Knowledge of mechanics and simulation techniques is required. It is also valuable to be thorough, persistent, open-minded, and collaborative. We offer this thesis to two students working together in the rock drill development department in Örebro for most of the time.How to Apply:
Does this sound interesting, and do you feel this is a good match?Log in to the recruitment system to apply. If you’re new to the system, start by creating a profile. Don’t forget to attach your CV and a brief letter about yourself, describing why you are applying for this thesis. Please note that we do not accept applications via email.We review applications continuously, and the project may be filled before the application deadline. We recommend submitting your application as soon as possible, but no later than November 30th.For more information or questions please contact hiring manager: Hanna Kristofferson, Group Manager Rock Drills System and Simulation, hanna.kristofferson@epiroc.comEpiroc is a global productivity partner for mining and construction customers, and accelerates the transformation toward a sustainable society. With ground-breaking technology, Epiroc develops and provides innovative and safe equipment, such as drill rigs, rock excavation and construction equipment and tools for surface and underground applications. The company also offers world-class service and other aftermarket support as well as solutions for automation, digitalization and electrification. Epiroc is based in Stockholm, Sweden, had revenues of more than SEK 60 billion in 2023, and has around 18 200 passionate employees supporting and collaborating with customers in around 150 countries. Learn more at .

Expected salary

Location

Örebro

Job date

Wed, 02 Oct 2024 04:17:33 GMT

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