Biomechanical analysis of user stress and product optimization

The use of hand-held devices (power tools), e.g. hammer drills, often requires high physical stress on the user due to unfavorable body postures, high forces to be exerted and additional vibration loads. Prolonged and repetitive stress on the human musculoskeletal system can lead to musculoskeletal disorders (MSDs) such as tendinitis and joint pain. In order to improve the product ergonomics of power tools, ergonomic aspects should be included into product development at an early stage. Digital human models can help to resource-efficiently estimate user stress and enable the investigation of joint forces and muscle activation. By simulating applications with such models, user stress can be evaluated and products can be ergonomically optimized.

Task

The objective is to simulate and evaluate user stress of hammer drill applications measured in studies in the open source software OpenSim. In later work, a biomechanically optimized posture is to be derived and the power tool design adapted accordingly.

Profile

• You are studying mechanical engineering, mechatronics, electrical engineering, computer science, engineering or a similar course of study
• Fluency in German or English
• Knowledge of MATLAB and C++ is an advantage, but not essential
• You are characterized by an independent and conscientious way of working

If you are interested or have any questions, please contact me: susanne.sutschet∂kit.edu