Master Thesis Volvo CE – Simulation of weld residual stresses

Volvo Construction Equipment, a business area within the Volvo Group, is one of the world’s leading manufacturers of construction equipment such as wheel loaders, excavators, articulated haulers, road development equipment and compact equipment. Facilities are located in Europe, Asia, North America and Latin America. Center for development and manufacturing of Volvo Articulated and Autonomous Haulers is located in Braås, Sweden. We are committed to building a better tomorrow and are proud of our innovative spirit resulting in world leading products, autonomous haulers and the first vehicle built with fossil- free steel and much more, always with a great team spirit and collaboration.
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Description:
Master thesis: Simulation of the welding process in order to capture residual stresses.
The purpose of the thesis work is to calculate the residual stress distribution, originating from the welding process, for typical fillet welds by using the FEA software LS-Dyna.
Residual stresses from welding occur as a result of permanent deformation in the welding zone of the component. Tensile weld residual stress decreases the fatigue life and compressive weld residual stress increases the fatigue life. It is thus necessary to have knowledge about distribution and magnitude of weld residual stresses in the welded structures. This investigation mostly relies on finite element simulation considering coupled thermo mechanical analysis. In order to do so, LSDYNA code can be used for welding simulation and thereby evaluate residual stresses. This program is used to solve multi-physics problems including solid mechanics and heat transfer by using the thermal solver in combination with the mechanical solver.


Suitable Background: Mechanical Engineering or similar, applied mathematics, including courses in Finite Elements
Thesis Level: Master
Language: English (Documentation)
Starting Date: Spring 2023
Number of Students: 1-2


For further information, please contact:
Magnus Andersson
Calculation Engineer
E-mail:magnus.k.andersson@volvo.com


Dennis Carlsson
Calculation Engineer
E-mail: dennis.carlsson@volvo.com


Welcome with your application!