We are now looking for master students within Mechanical / Technical Engineering, Engineering Physics / Mathematics, Global Systems or related field, that are interested in doing their thesis project at our R&D department.
Plate compactors are used to flatten the ground to obtain certain grade of uniformity and hardness. The ground could be soil, asphalt or gravel, and there are different compactors for different applications. Bottom plate also referred to as base plate is the main source of vibrations and is also the primary focus in plate compactors. The mass distribution and excitation force play a key role in the machine’s vibrations and performance capabilities. So, if there is a change in the mass distribution and the location of excitation force, the movement of the bottom plate will be affected, which in turn affects the maneuverability of the machine. So, to interpret and improve the performance of the machine, it is essential to know how the machine is affected by the change in different parameters of the component. Although a Finite Element (FE) modelling technique gives an accurate estimation, it is computationally expensive and time consuming to run the simulations for different design ideas. Therefore, one can argue that a simple mathematical model, like a spring-mass system, will help us to understand the bottom-plate movement and be an efficient way to initially filter out different designs ideas for the bottom plate. If the model yields acceptable results, the designs can then be used in the FE modelling too.
The objective
Build a mathematical model of the compactor, akin to a spring-mass system, and to simulate the behavior of the compactor during its operating conditions.
Proper area of education
Master students within Mechanical / Technical Engineering, Engineering Physics / Mathematics, Global Systems or related fields. Applicants should have a good understanding of vibration theory and rigid-body dynamics, and an interest and knowledge in Python programming.
The thesis will include work such as
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Develop a mathematical model for the machine’s dynamics.
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Correlate the mathematical model with the help of simulations and/or using results from physical testing.
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Build a basic mathematical model for the ground using physical test results.
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Simulate the operation of the machine.
Further scope:
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If the tasks are completed early and verified with the physical test results, it is possible to build a mathematical model to explore de-vibration.
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In the first instance, additional components in the de-vibration implementation could be modelled as point masses that are located at their center of gravity. This will make it easy to extract the machine's accelerations, velocities, and displacements.
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Similarly, a mathematical model of the rammer can be developed for straight-forward modelling of the de-vibration.
How to apply
Please send in your application with CV and cover letter no later than November 18th. Due to GDPR, we do not accept applications by email.
For questions regarding the thesis project please contact:
Karl Elmestrand, [email protected]
Read about Husqvarna Group here:
https://www.husqvarnagroup.com/
Husqvarna Group is a world-leading producer of outdoor power products for garden, park and forest care. Products include chainsaws, trimmers, robotic lawn mowers and ride-on lawn mowers. The Group is also the European leader in garden watering products and a world leader in cutting equipment and diamond tools for the construction and stone industries. The Group’s products and solutions are sold under the main brands Husqvarna & Gardena that serve professionals in more than 140 countries. Net sales in 2023 amounted to SEK 53 billion and the Group has around 14,000 employees in 40 countries.
Last date to apply:
17 November 2024
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Husqvarna Group is a global leading producer of outdoor power products for forest, park and garden care. Sustainability is integrated into our business. Creating a strong company fit for the future demands the ingenuity and courage of our people, forward-thinking leadership in our organization and the insights of our strategic partners.
Working at our company means being part of our long and proud history. More than 330 years of innovation has shaped the company and contributed to the passion that drives our employees and the company forward. The Group has grown and now includes 14,400 employees in 40 countries and our products are sold in 100 countries under brands such as Husqvarna, Gardena, Flymo and Orbit Irrigation. The range includes robotic lawnmowers, chainsaws, trimmers, riding lawnmowers and garden irrigation.
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Do you want to be part of Husqvarna Group and pursue a challenging career in an international environment? Read about our job openings and trainee programs here: husqvarnagroup.com/career
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