UC San Diego Structural Engineering Professor H. Alicia Kim is at the forefront of cutting-edge research, developing topology optimization to revolutionize engineering solutions across diverse domains.

In one project, Kim and her team tackled the challenge of crafting lightweight yet robust battery packs for electric vertical take-off and landing vehicles (eVTOL). These aircraft demand efficient thermal management systems to sustain their flight power and energy requirements.

To meet this challenge, the team developed thermo-mechanical level-set topology optimization techniques that account for the battery electrochemistry. They designed a battery pack comprising high-energy-density cylindrical cells, ensuring it met both structural and thermal requirements. Using an electrochemical model, they predicted the heat generated by the batteries during eVTOL flights. These predictions were integrated into a steady-state thermo-mechanical finite element model, aiming for a lighter battery pack that performs optimally.

Another project focuses on diminishing vibration-induced noise in automobile cabins, a critical concern in modern engineering aimed at improving passenger comfort. Working with a demonstrative 1994 Chevrolet C1500 pick-up truck model, the team developed new topology optimization techniques to minimize noise near the driver's position by redesigning the vehicle's floor.

Operating at a frequency of 170 Hz, the project utilized vibroacoustic analysis to evaluate the acoustic pressure profile. With optimization, the team achieved a remarkable reduction in cabin noise from 84 dB to 63 dB, all while using 15% less material.

In both projects, Kim's innovative topology optimization techniques demonstrate her dedication to advancing engineering solutions under complex multiple physics and chemistry constraints, addressing real-world challenges, and pushing the boundaries of technological innovation.